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Realtek offers highly integrated, reliable, low-power and secure wireless SoCs.

Arm®/RISC-V MCU | Wi-Fi | Bluetooth | AI | Audio | HMI | Low Power | Security

Highlights

In addition to integrating essential peripheral interfaces for IoT development, Secure Boot, AES/SHA hardware encryption engine, authenticated debug access, Wi-Fi 4 2.4GHz, BLE, and other important functions, this IC also supports the following features:

System Security

Integrates various security features including TrustZone, secure boot, symmetric encryption, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing PSA Level 2 and above security protection for customer products

Wi-Fi6

Incorporating advanced technologies such as OFDMA, MU-MIMO, Extended Range and TWT effectively alleviates wireless resource congestion, enhances weak signal coverage, significantly improves transmission quality, reduces latency and extends the battery life of IoT devices through ultra-long sleep cycles

Wi-Fi Dual Band

2.4GHz for Wall-Penetrating Coverage, 5GHz for High-Speed Transmission, Adapting to complex environments, this dual-band synergy comprehensively upgrades the IoT device experience

Wi-Fi R-MESH

Multi-hop, Multi-branch Intelligent Networking, Rapid Fault Self-Healing, Ultra-Low Latency, and High Stability comprehensively overcome traditional Mesh network bottlenecks, redefining the wireless experience across all scenarios

Display

UI rendering hardware accelerator provides smooth and fast interface animations, enhancing the human-machine interaction experience of smart panels. Supports standard display interfaces, flexibly adaptable from small LCDs to HD screens.

Ultra-Low Power

Supporting ultra-low-power WoWLAN and enabling rapid restoration of the original runtime context, empowering battery-powered devices with network listening wake-up functionality

More

Integrates DMIC/I2S, USB 2.0 Full-Speed Device, SDIO Device

System Architecture

Real-M300 (KM4)

• Armv8.1-M Architecture
• Arm Cortex®-M55 ISA compatible
• Up to 345MHz, 3-stage pipeline
• 16KB I-Cache
• 16KB D-Cache
• FPU/DSP instruction extensions
• Arm TrustZone®-M

Real-M200 (KM0)

• Armv8-M Architecture
• Arm Cortex®-M23 ISA compatible
• Up to 115MHz, 2-stage pipeline
• 16KB I-Cache
• 16KB D-Cache

Memory System

• 512KB SRAM
• QSPI NOR Flash: Up to 104MHz
• DQ8 DDR PSRAM: Up to 200MHz

IC Selection

Select in Current Series Select in All Series

Part number	RTL8721DAF-VA2-CG	RTL8721DAF-VT2-CG	RTL8721DAM-VA2-CG	RTL8721DCF-VA2-CG	RTL8721DCM-VA2-CG	RTL8721DCM-VA3-CG	RTL8721DGF-VW2-CG	RTL8721DGM-VW2-CG
Real-M300	345MHz	345MHz	345MHz	345MHz	345MHz	345MHz	345MHz	345MHz
Real-M200	115MHz	115MHz	115MHz	115MHz	115MHz	115MHz	115MHz	115MHz
On-chip SRAM	512KB	512KB	512KB	512KB	512KB	512KB	512KB	512KB
TrustZone	Y	Y	Y	Y	Y	Y	Y	Y
NOR Flash	4MB	4MB	X	4MB	X	X	4MB	X
PSRAM	X	X	4MB	X	4MB	8MB	X	4MB
Wi-Fi	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)
Bluetooth	LE	LE	LE	LE	LE	LE	LE	LE
Operating voltage	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	1.71V ~ 3.63V	1.71V ~ 3.63V
Operating temperature	-20°C ~ 85°C	-40°C ~ 105°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C
Package (mm)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN68 (8 x 8)	QFN68 (8 x 8)	QFN68 (8 x 8)	BGA100 (5.1 x 5.1)	BGA100 (5.1 x 5.1)

Peripheral Interfaces

Function	Quantity	Notes
GPIO	56	pcs
SPI	2	pcs
UART	4	pcs
I2C	2	pcs
Key-Scan	64	keys
IR (Infrared Trnaseiver)	1	pcs
RTC	1	pcs
General Timer	10	pcs
PWM	8	channels
Capture Timer	1	pcs
12-bit ADC	7	channels
Dedicated Battery ADC	1	channel
Touch Keys	4	keys
GDMA	8	channels
Independent Watchdog	1	pcs
Secure Watchdog	1	pcs
Normal Watchdog	2	pcs
USB 2.0	1	pcs
SDIO Device	1	pcs
Serial LED Controller	1	pcs
Pixel Processing Engine	1	For fast image data processing
OSPI Display Interface	1	Supports OSPI, QSPI, SPI interface screens
Audio Codec	1	Includes 2-channel digital microphones (DMIC)
I2S	2	Up to 192kHz, supports up to 8-channel data TX/RX

Security Features

We consistently prioritize security as the core of our products, offering our customers a rich array of security features through hardware design and providing exceptional hardware-based attack resistance, helping to create IoT products with ultimate security.

Features	Support	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M
OTP Secure Storage
Debug Password Protection
HUK Derivation Mechanism
True Random Number Generator (TRNG)

PSA Level-2 Security Certification

Provide a laboratory evaluation of the PSA Root of Trust (PSA-RoT) to demonstrate its resilience against scalable software attacks.

Secure Boot

Based on asymmetric encryption and digital signature mechanisms, it verifies public key hashes and firmware signatures. This process can prevent tampering and rollback attacks, ensuring that the device only runs trusted firmware

Flash OTF Decryption

Supports both embedded and external Flash, with independent key encryption for multiple firmware. When the CPU executes encrypted firmware, it is decrypted in real-time by hardware, with nearly imperceptible performance impact. Supports unique encryption for each device, preventing injection and cloning attacks

Arm TrustZone®-M

Based on the Arm TrustZone® architecture, coupled with a dedicated hardware access control unit, it achieves strong isolation protection for secure memory areas and secure peripherals. Meanwhile, secure firmware is decrypted by the security encryption engine and loaded into the secure RAM area, ensuring protection against leakage and tampering throughout the entire process

OTP Secure Storage

Physical-level anti-extraction, key area locked for access only by the security engine, tamper-resistant and read-proof. Supports independent secure zones and CRC verification

True Random Number Generator (TRNG)

Generates high-security random numbers based on physical entropy sources. Certified by NIST for randomness. Provides unpredictability to the system, resistant to prediction attacks

HUK Derivation Mechanism

Hardware Unique Key (HUK) with physical isolation protection, unreadable and unclonable, used for secure derivation of application keys

Debug Password Protection

Strict control over debug interface access through authentication mechanisms. Supports authorized access and permanent closure, eliminating physical debug attacks. Meets security management requirements at different stages of the product lifecycle, effectively enhancing overall security

Security Certifications Support

We offer support for multiple security certifications. By providing these advanced security features and certification support, we aim to assist our customers in efficiently meeting various market entry requirements, ensuring the security and competitiveness of their products.

• PSA
• NIST STS
• NIST CAVP
• FIPS 140-3
• RED (EN 18031)

Most of our chips are capable of achieving PSA Certified Level 2 and Level 3, with some chips already having completed PSA Certified Level 2 certification.

Wireless Connectivity

Wi-Fi Features
Features	Support	Comment
Frequency	2.4GHz/5GHz
Wi-Fi 6
Bandwidth	40MHz
MaximumPHY rate	150Mbps	HT MCS7
Main Protocols	802.11 a/b/g/n
Sub-protocols	802.11 e/i/w/d/k/v/r
Other Key Protocols	WMM/WPA1~3/WPS/802.1X/EAP/P2P/NAN
UL LDPC		UL Low-Density Parity-Check Code
DL STBC		DL Space-Time Block Coding
Auto Antenna Diversity
CSI		Channel State Information
MCC		Multi-Channel Concurrency
R-MESH		Realtek MESH
Wi-Fi Card Mode
BT Features
Features	Support	Comment
Bluetooth LE		Bluetooth Low Energy
Scatternet		Scatternet concurrent central/peripheral operation
LE 2Mpbs PHY
LE Long Range		LE Coded PHY long-range mode (125kbps/500kbps)
LE Advertising Extensions		Support multiple advertising sets
SIG Mesh		Certified for SIG Mesh v1.1

Power Consumption

Mode	Wi-Fi	Power Consumption	Unit	Comment
Deep-Sleep	OFF	13.9	µA	Flash package
Sleep	OFF	37.7	µA	Flash package
Active	OFF	6.56	mA	0.9v WFI mode, CPU=240MHz
WoWLAN	DTIM=3	165	µA	2.4G mode
WoWLAN	DTIM=10	84	µA	2.4G mode

NOTICE:

• Test conditions: 3.3V, 25°C
• WoWLAN: System average power consumption

Application Scenarios

• Dolby Atmos Speaker
• Wi-Fi Card Mode
• BLE gateway
• Smart POS
• Smart home

• Smart thermostat
• Smart door lock
• Battery camera
• Smart remote controller

Development Resources

Software Resources

	FreeRTOS SDK Download	Link
	FreeRTOS SDK Guide	Link
	Development Tools	Link
	VS Code Extension	Link

Hardware Resources

	Datasheet	Link
	Pinmux Table	Link
	Pinmux Auto-Layout	Link
	Schematic & PCB Design	Link

EVB Purchase

	PKE8721DAF-C13-F10 (Taobao)	Link
	PKE8721DAF-C13-F10 (Amazon)	Link

Highlights

In addition to essential features for IoT development like peripheral interfaces, secure boot, AES/SHA hardware crypto engine, and authenticated debug access, as well as Wi-Fi 4 2.4G and BLE, this IC also supports the following functions:

Dual-Core Architecture

Integrates two processors, Armv8.1-M and RISC-V, both running up to 400MHz. Integrates 768KB SRAM and supports DQ8 DDR PSRAM.

System Security

Integrates various security features including TrustZone, secure boot, symmetric encryption, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing PSA Level 2 and above security protection for customer products

Wi-Fi6

Incorporating advanced technologies such as OFDMA, MU-MIMO, Extended Range and TWT effectively alleviates wireless resource congestion, enhances weak signal coverage, significantly improves transmission quality, reduces latency and extends the battery life of IoT devices through ultra-long sleep cycles

Audio Codec Integrated

Built-in audio codec supports audio input and output, reducing dependency on external components and adaptation costs, facilitating voice interaction and audio playback

System Architecture

Real-M300 (KM4)

• Armv8.1-M Architecture (Arm Cortex®-M55 ISA compatible)
• Up to 400MHz clock frequency, 3-stage pipeline
• 16KB I-Cache
• 16KB D-Cache
• Integrated FPU/DSP instruction extensions
• Hardware-level isolation with Arm TrustZone®-M

KR4

• RISC-V RV32IMAFC Architecture
• 400MHz Single-Issue In-Order Pipeline
• 16KB I-Cache
• 16KB D-Cache
• Open-source ISA architecture, supports custom extensions

Memory System

• 768KB SRAM
• QSPI NOR Flash: Up to 100MHz
• DQ8 DDR PSRAM: Up to 200MHz

IC Selection

Select in Current Series Select in All Series

Part number	RTL8720EAF-VA2-CG	RTL8720EAF-VA3-CG	RTL8720EAM-VA2-CG	RTL8720EAM-VT2-CG
Real-M300	400MHz	400MHz	400MHz	400MHz
KR4	400MHz	400MHz	400MHz	400MHz
DSP	X	X	X	X
On-chip SRAM	768KB	768KB	768KB	768KB
TrustZone	Y	Y	Y	Y
NOR Flash	4MB	8MB	X	X
PSRAM	X	X	4MB	4MB
Wi-Fi	Wi-Fi 6 (2.4GHz)	Wi-Fi 6 (2.4GHz)	Wi-Fi 6 (2.4GHz)	Wi-Fi 6 (2.4GHz)
Bluetooth	LE	LE	LE	LE
Operating voltage	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V
Operating temperature	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-40°C ~ 105°C
Package (mm)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN48 (6 x 6)

Peripheral Interfaces

Function	Quantity	Notes
GPIO	27	pcs
SPI	2	pcs
UART	5	pcs
I2C	2	pcs
IR (Infrared Transceiver)	1	pcs
RTC	1	pcs
General Timer	15	pcs
PWM	8	channels
Capture Timer	1	pcs
12-bit ADC	6	channels
Touch Key	9	keys
GDMA	8	channels
Independent Watchdog	1	pcs
Secure Watchdog	1	pcs
Normal Watchdog	2	pcs
Serial LED Controller	1	pcs
On-chip Temperature Sensor	1	pcs
Digital Microphone	4	channels
I2S	2	Up to 192kHz sampling rate, up to 8-channel data transmission
VAD	1	Supports voice activity detection
PDM Output	1	Mono channel

Security Features

We consistently prioritize security as the core of our products, offering our customers a rich array of security features through hardware design and providing exceptional hardware-based attack resistance, helping to create IoT products with ultimate security.

Features	Support	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine		ECDSA
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M
OTP Secure Storage
Debug Password Protection
HUK Derivation Mechanism
True Random Number Generator (TRNG)

Secure Boot

Based on asymmetric encryption and digital signature mechanisms, it verifies public key hashes and firmware signatures. This process can prevent tampering and rollback attacks, ensuring that the device only runs trusted firmware

Flash OTF Decryption

Supports both embedded and external Flash, with independent key encryption for multiple firmware. When the CPU executes encrypted firmware, it is decrypted in real-time by hardware, with nearly imperceptible performance impact. Supports unique encryption for each device, preventing injection and cloning attacks

Arm TrustZone®-M

Based on the Arm TrustZone® architecture, coupled with a dedicated hardware access control unit, it achieves strong isolation protection for secure memory areas and secure peripherals. Meanwhile, secure firmware is decrypted by the security encryption engine and loaded into the secure RAM area, ensuring protection against leakage and tampering throughout the entire process

Asymmetric Encryption Engine

In addition to the essential symmetric encryption engines like AES for IoT, we also provide computationally more intensive asymmetric encryption algorithms such as ECDSA, EdDSA, and RSA. This greatly alleviates the computational burden on the CPU and improves encryption and decryption speeds

OTP Secure Storage

Physical-level anti-extraction, key area locked for access only by the security engine, tamper-resistant and read-proof. Supports independent secure zones and CRC verification

True Random Number Generator (TRNG)

Generates high-security random numbers based on physical entropy sources. Certified by NIST for randomness. Provides unpredictability to the system, resistant to prediction attacks

HUK Derivation Mechanism

Hardware Unique Key (HUK) with physical isolation protection, unreadable and unclonable, used for secure derivation of application keys

Debug Password Protection

Strict control over debug interface access through authentication mechanisms. Supports authorized access and permanent closure, eliminating physical debug attacks. Meets security management requirements at different stages of the product lifecycle, effectively enhancing overall security

Security Certifications Support

We offer support for multiple security certifications. By providing these advanced security features and certification support, we aim to assist our customers in efficiently meeting various market entry requirements, ensuring the security and competitiveness of their products.

• PSA
• NIST STS
• NIST CAVP
• FIPS 140-3
• RED (EN 18031)

Most of our chips are capable of achieving PSA Certified Level 2 and Level 3, with some chips already having completed PSA Certified Level 2 certification.

Wireless Connectivity

Wi-Fi Features
Features	Support	Comment
Frequency	2.4GHz
Wi-Fi 6
Bandwidth	20MHz
Maximum PHY rate	114.7Mbps	HE MCS9
Main Protocols	802.11 b/g/n/ax
Sub-protocols	802.11 e/i/w/d/k/v/r
Other Key Protocols	WMM/WPA1~3/WPS/802.1X/EAP/P2P/NAN
UL/DL OFDMA & DL MU-MIMO
SU/MU Beamformee
TWT		Target Wake Time
UL LDPC		UL Low-Density Parity-Check Code
DL STBC		DL Space-Time Block Coding
Auto Antenna Diversity
CSI		Channel State Information
MCC		Multi-Channel Concurrency
Wi-Fi Card Mode
BT Features
Features	Support	Comment
Bluetooth LE		Bluetooth Low Energy
Scatternet		Scatternet concurrent central/peripheral operation
LE 2Mpbs PHY
LE Long Range		LE Coded PHY long-range mode (125kbps/500kbps)
LE Advertising Extensions		Support multiple advertising sets
LE Periodic Advertising
LE Periodic Advertising Sync Transfer
Direction Finding (AoA/AoD)		Support Angle of Arrival and Angel of Departure
LE Power Control
SIG Mesh		Certified for SIG Mesh v1.1

System Power Consumption

Mode	Wi-Fi	Power Consumption	Unit	Comment
Deep-Sleep	OFF	57.4	µA	PSRAM package
Sleep	OFF	700	µA	PSRAM package
Active	OFF	20.0	mA	1.25v WFI mode, CPU=400MHz
WoWLAN	DTIM=3	1.48	mA	2.4G mode
WoWLAN	DTIM=10	1.36	mA	2.4G mode

NOTICE:

• Test conditions: 3.3V, 25°C
• WoWLAN: System average power consumption

Application Scenarios

• Home appliance
• Industrial control
• Energy storage

• Smart thermostat
• BLE gateway
• Micro inverter

Development Resources

Software Resources

	FreeRTOS SDK Download	Link
	FreeRTOS SDK Guide	Link
	Development Tools	Link
	VS Code Extension	Link

Hardware Resources

	Datasheet	Link
	Pinmux Table	Link
	Pinmux Auto-Layout	Link
	Schematic & PCB Design	Link

EVB Purchase

RTL8720EAM EVB (Taobao)

Link

Highlights

In addition to essential features for IoT development like peripheral interfaces, secure boot, AES/SHA hardware crypto engine, and authenticated debug access, as well as Wi-Fi 4 2.4G and BLE, this IC also supports the following functions:

Dual-Core Architecture

Integrates two processors, Armv8.1-M and RISC-V, both running up to 400MHz. Integrates 512KB SRAM and supports DQ8 DDR PSRAM.

System Security

Integrates various security features including secure boot, symmetric encryption, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing PSA Level 2 and above security protection for customer products

Wi-Fi6

Incorporating advanced technologies such as OFDMA, MU-MIMO, Extended Range and TWT effectively alleviates wireless resource congestion, enhances weak signal coverage, significantly improves transmission quality, reduces latency and extends the battery life of IoT devices through ultra-long sleep cycles

Audio Codec Integrated

Built-in audio codec supports audio input and output, reducing dependency on external components and adaptation costs, facilitating voice interaction and audio playback

System Architecture

Real-M300 (KM4)

• Armv8.1-M Architecture (Arm Cortex®-M55 ISA compatible)
• Up to 400MHz clock frequency, 3-stage pipeline
• 16KB I-Cache
• 16KB D-Cache
• Integrated FPU/DSP instruction extensions

KR4

• RISC-V RV32IMAFC Architecture
• 400MHz Single-Issue In-Order Pipeline
• 16KB I-Cache
• 16KB D-Cache
• Open-source ISA architecture, supports custom extensions

Memory System

• 512KB SRAM
• QSPI NOR Flash: Up to 100MHz
• DQ8 DDR PSRAM: Up to 250MHz

IC Selection

Select in Current Series Select in All Series

Package number	RTL8710ECF-VA2-CG	RTL8710ECF-VA3-CG	RTL8710ECM-VA2-CG
Real-M300	400MHz	400MHz	400MHz
KR4	400MHz	400MHz	400MHz
DSP	X	X	X
On-chip SRAM	512KB	512KB	512KB
TrustZone	X	X	X
NOR Flash	4MB	8MB	X
PSRAM	X	X	4MB
Wi-Fi	Wi-Fi 6 (2.4GHz)	Wi-Fi 6 (2.4GHz)	Wi-Fi 6 (2.4GHz)
Bluetooth	LE	LE	LE
Operating voltage	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V
Operating temperature	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C
Package (mm)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN48 (6 x 6)

Peripheral Interfaces

Function	Quantity	Notes
GPIO	27	pcs
SPI	2	pcs
UART	5	pcs
I2C	2	pcs
IR (Infrared Transceiver)	1	pcs
RTC	1	pcs
General Timer	15	pcs
PWM	8	channels
Capture Timer	1	pcs
12-bit ADC	6	channels
Touch Key	9	keys
GDMA	8	channels
Independent Watchdog	1	pcs
Normal Watchdog	3	pcs
Serial LED Controller	1	pcs
On-chip Temperature Sensor	1	pcs
Digital Microphone	4	channels
I2S	2	Up to 192kHz sampling rate, up to 8 channels data transfer
VAD	1	Supports Voice Activity Detection
PDM Output	1	Mono channel

Security Features

We consistently prioritize security as the core of our products, offering our customers a rich array of security features through hardware design and providing exceptional hardware-based attack resistance, helping to create IoT products with ultimate security.

Features	Support	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine		ECDSA
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M
OTP Secure Storage
Debug Password Protection
HUK Derivation Mechanism
True Random Number Generator (TRNG)

Secure Boot

Based on asymmetric encryption and digital signature mechanisms, it verifies public key hashes and firmware signatures. This process can prevent tampering and rollback attacks, ensuring that the device only runs trusted firmware

Flash OTF Decryption

Supports both embedded and external Flash, with independent key encryption for multiple firmware. When the CPU executes encrypted firmware, it is decrypted in real-time by hardware, with nearly imperceptible performance impact. Supports unique encryption for each device, preventing injection and cloning attacks

Asymmetric Encryption Engine

In addition to the essential symmetric encryption engines like AES for IoT, we also provide computationally more intensive asymmetric encryption algorithms such as ECDSA, EdDSA, and RSA. This greatly alleviates the computational burden on the CPU and improves encryption and decryption speeds

OTP Secure Storage

Physical-level anti-extraction, key area locked for access only by the security engine, tamper-resistant and read-proof. Supports independent secure zones and CRC verification

True Random Number Generator (TRNG)

Generates high-security random numbers based on physical entropy sources. Certified by NIST for randomness. Provides unpredictability to the system, resistant to prediction attacks

HUK Derivation Mechanism

Hardware Unique Key (HUK) with physical isolation protection, unreadable and unclonable, used for secure derivation of application keys

Debug Password Protection

Strict control over debug interface access through authentication mechanisms. Supports authorized access and permanent closure, eliminating physical debug attacks. Meets security management requirements at different stages of the product lifecycle, effectively enhancing overall security

Security Certifications Support

We offer support for multiple security certifications. By providing these advanced security features and certification support, we aim to assist our customers in efficiently meeting various market entry requirements, ensuring the security and competitiveness of their products.

• PSA
• NIST STS
• NIST CAVP
• FIPS 140-3
• RED (EN 18031)

Most of our chips are capable of achieving PSA Certified Level 2 and Level 3, with some chips already having completed PSA Certified Level 2 certification.

Wireless Connectivity

Wi-Fi Features
Features	Support	Comment
Frequency	2.4GHz
Wi-Fi 6
Bandwidth	20MHz
Maximum PHY rate	114.7Mbps	HE MCS9
Main Protocols	802.11 b/g/n/ax
Sub-protocols	802.11 e/i/w/d/k/v/r
Other Key Protocols	WMM/WPA1~3/WPS/802.1X/EAP/P2P/NAN
UL/DL OFDMA & DL MU-MIMO
SU/MU Beamformee
TWT		Target Wake Time
UL LDPC		UL Low-Density Parity-Check Code
DL STBC		DL Space-Time Block Coding
Auto Antenna Diversity
CSI		Channel State Information
MCC		Multi-Channel Concurrency
Wi-Fi Card Mode
BT Features
Features	Support	Comment
Bluetooth LE		Bluetooth Low Energy
Scatternet		Scatternet concurrent central/peripheral operation
LE 2Mpbs PHY
LE Long Range		LE Coded PHY long-range mode (125kbps/500kbps)
LE Advertising Extensions		Support multiple advertising sets
LE Periodic Advertising
LE Periodic Advertising Sync Transfer
Direction Finding (AoA/AoD)		Support Angle of Arrival and Angel of Departure
LE Power Control
SIG Mesh		Certified for SIG Mesh v1.1

System Power Consumption

Mode	Wi-Fi	Power Consumption	Unit	Comment
Deep-Sleep	OFF	57.4	µA	PSRAM package
Sleep	OFF	700	µA	PSRAM package
Active	OFF	20.0	mA	1.25v WFI mode, CPU=400MHz
WoWLAN	DTIM=3	1.48	mA	2.4G mode
WoWLAN	DTIM=10	1.36	mA	2.4G mode

NOTICE:

• Test conditions: 3.3V, 25°C
• WoWLAN: System average power consumption

Application Scenarios

• Home appliance
• Industrial control
• Energy storage

• Smart thermostat
• BLE gateway
• Micro inverter

Development Resources

Software Resources

	FreeRTOS SDK Download	Link
	FreeRTOS SDK Guide	Link
	Development Tools	Link
	VS Code Extension	Link

Hardware Resources

	Datasheet	Link
	Pinmux Table	Link
	Pinmux Auto-Layout	Link
	Schematic & PCB Design	Link

EVB Purchase

	PKE8710ECF-C53-F20 (Taobao)	Link
	PKE8710ECF-C53-F20 (Amazon)	Link

Highlights

In addition to essential features for IoT development like peripheral interfaces, secure boot, AES/SHA hardware crypto engine, and authenticated debug access, as well as Wi-Fi 4 2.4G and BLE, this IC also supports the following functions:

HiFi5 DSP

Integrated HiFi-5 DSP, architecturally optimized for AI computing, voice wake-up and noise reduction applications. Multi-channel MAC computing capability ensures faster processing. Working with independent application core and network core, three-core collaboration ensures stable low-latency voice applications.

System Security

Integrates various security features including TrustZone, secure boot, symmetric encryption, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing PSA Level 2 and above security protection for customer products

Wi-Fi6

Incorporating advanced technologies such as OFDMA, MU-MIMO, Extended Range and TWT effectively alleviates wireless resource congestion, enhances weak signal coverage, significantly improves transmission quality, reduces latency and extends the battery life of IoT devices through ultra-long sleep cycles

Audio Codec Integrated

Built-in audio codec supports audio input and output, reducing dependency on external components and adaptation costs, facilitating voice interaction and audio playback

Bluetooh Dual Mode Support

Bluetooth Classic and Bluetooth Low Energy concurrent, fully compatible with Bluetooth Classic profiles such as A2DP/HFP, achieving seamless coordination of high-definition stereo audio and low-latency call control, enjoying better wireless audio experience

System Architecture

Real-M300 (KM4)

• Armv8.1-M Architecture (Arm Cortex®-M55 ISA compatible)
• Up to 400MHz clock frequency, 3-stage pipeline
• 16KB I-Cache
• 16KB D-Cache
• Integrated FPU/DSP instruction extensions
• Hardware-level isolation with Arm TrustZone®-M

KR4

• RISC-V RV32IMAFC Architecture
• 400MHz Single-Issue In-Order Pipeline
• 16KB I-Cache
• 16KB D-Cache
• Open-source ISA architecture, supports custom extensions

Cadence® Tensilica® HiFi 5 DSP

• 500MHz 5-slot VLIW architecture
• 8 x 32-bit MACs/cycle
• 8 x SP-FMACs/cycle
• 32 x 8-bit MACs/cycle
• 256KB dedicated DTCM
• 32KB I-Cache
• 48KB D-Cache

Memory System

• 512KB SRAM
• QSPI NOR Flash: Up to 100MHz
• DQ8 DDR PSRAM: Up to 250MHz

IC Selection

Select in Current Series Select in All Series

Package number	RTL8726EAM-VA4-CG
Real-M300	400MHz
KR4	400MHz
DSP	500MHz
On-chip SRAM	512KB
TrustZone	Y
NOR Flash	X
PSRAM	16MB
Wi-Fi	Wi-Fi 6 (2.4GHz)
Bluetooth	Dual Mode
Operating voltage	2.97V ~ 3.63V
Operating temperature	-20°C ~ 85°C
Package (mm)	QFN68 (8 x 8)

Peripheral Interfaces

Function	Quantity	Notes
GPIO	43	pcs
SPI	2	pcs
UART	5	pcs
I2C	2	pcs
IR (Infrared Transceiver)	1	pcs
RTC	1	pcs
General Timer	15	pcs
PWM	8	channels
Capture Timer	1	pcs
12-bit ADC	6	channels
Touch Key	9	keys
GDMA	8	channels
Independent Watchdog	1	pcs
Secure Watchdog	1	pcs
Normal Watchdog	3	pcs
Serial LED Controller	1	pcs
On-chip Temperature Sensor	1	pcs
Digital Microphone	4	channels
I2S	2	Up to 192kHz sampling rate, up to 8-channel data transmission
Audio ADC	3	channels
VAD	1	Supports voice activity detection
PDM Output	1	Mono channel
Audio DAC	1	Mono channel, supports linear output

Security Features

We consistently prioritize security as the core of our products, offering our customers a rich array of security features through hardware design and providing exceptional hardware-based attack resistance, helping to create IoT products with ultimate security.

Features	Support	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine		ECDSA
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M
OTP Secure Storage
Debug Password Protection
HUK Derivation Mechanism
True Random Number Generator (TRNG)

Secure Boot

Based on asymmetric encryption and digital signature mechanisms, it verifies public key hashes and firmware signatures. This process can prevent tampering and rollback attacks, ensuring that the device only runs trusted firmware

Flash OTF Decryption

Supports both embedded and external Flash, with independent key encryption for multiple firmware. When the CPU executes encrypted firmware, it is decrypted in real-time by hardware, with nearly imperceptible performance impact. Supports unique encryption for each device, preventing injection and cloning attacks

Arm TrustZone®-M

Based on the Arm TrustZone® architecture, coupled with a dedicated hardware access control unit, it achieves strong isolation protection for secure memory areas and secure peripherals. Meanwhile, secure firmware is decrypted by the security encryption engine and loaded into the secure RAM area, ensuring protection against leakage and tampering throughout the entire process

Asymmetric Encryption Engine

In addition to the essential symmetric encryption engines like AES for IoT, we also provide computationally more intensive asymmetric encryption algorithms such as ECDSA, EdDSA, and RSA. This greatly alleviates the computational burden on the CPU and improves encryption and decryption speeds

OTP Secure Storage

Physical-level anti-extraction, key area locked for access only by the security engine, tamper-resistant and read-proof. Supports independent secure zones and CRC verification

True Random Number Generator (TRNG)

Generates high-security random numbers based on physical entropy sources. Certified by NIST for randomness. Provides unpredictability to the system, resistant to prediction attacks

HUK Derivation Mechanism

Hardware Unique Key (HUK) with physical isolation protection, unreadable and unclonable, used for secure derivation of application keys

Debug Password Protection

Strict control over debug interface access through authentication mechanisms. Supports authorized access and permanent closure, eliminating physical debug attacks. Meets security management requirements at different stages of the product lifecycle, effectively enhancing overall security

Security Certifications Support

We offer support for multiple security certifications. By providing these advanced security features and certification support, we aim to assist our customers in efficiently meeting various market entry requirements, ensuring the security and competitiveness of their products.

• PSA
• NIST STS
• NIST CAVP
• FIPS 140-3
• RED (EN 18031)

Most of our chips are capable of achieving PSA Certified Level 2 and Level 3, with some chips already having completed PSA Certified Level 2 certification.

Wireless Connectivity

Wi-Fi Features
Features	Support	Comment
Frequency	2.4GHz
Wi-Fi 6
Bandwidth	20MHz
Maximum PHY rate	114.7Mbps	HE MCS9
Main Protocols	802.11 b/g/n/ax
Sub-protocols	802.11 e/i/w/d/k/v/r
Other Key Protocols	WMM/WPA1~3/WPS/802.1X/EAP/P2P/NAN
UL/DL OFDMA & DL MU-MIMO
SU/MU Beamformee
TWT		Target Wake Time
UL LDPC		UL Low-Density Parity-Check Code
DL STBC		DL Space-Time Block Coding
Auto Antenna Diversity
CSI		Channel State Information
MCC		Multi-Channel Concurrency
Wi-Fi Card Mode
BT Features
Features	Support	Comment
Bluetooth Dual Mode		Bluetooth Classic and Bluetooth Low Energy
Bluetooth BR/EDR		Bluetooth basic rate and enhanced data rate
Scatternet		Scatternet concurrent central/peripheral operation
LE 2Mpbs PHY
LE Long Range		LE Coded PHY long-range mode (125kbps/500kbps)
LE Advertising Extensions		Support multiple advertising sets
LE Periodic Advertising
LE Periodic Advertising Sync Transfer
Direction Finding (AoA/AoD)		Support Angle of Arrival and Angel of Departure
LE Power Control
SIG Mesh		Certified for SIG Mesh v1.1

System Power Consumption

Mode	Wi-Fi	Power Consumption	Unit	Comment
Deep-Sleep	OFF	57.4	µA	PSRAM package
Sleep	OFF	700	µA	PSRAM package
Active	OFF	12.7	mA	0.9v WFI mode, CPU=300MHz, DSP=400MHz
WoWLAN	DTIM=3	1.48	mA	2.4G mode
WoWLAN	DTIM=10	1.36	mA	2.4G mode

NOTICE:

• Test conditions: 3.3V, 25°C
• WoWLAN: System average power consumption

Application Scenarios

• Home appliance
• Smart voice assistant
• Smart bluetooth speaker
• Energy storage

• Intelligent device
• Smart audio
• BLE gateway
• Micro inverter

Development Resources

Software Resources

	HiFi DSP SDK Download	Link
	HiFi DSP SDK Guide	Link
	FreeRTOS SDK Download	Link
	FreeRTOS SDK Guide	Link
	Development Tools	Link
	VS Code Extension	Link

Hardware Resources

	Datasheet	Link
	Pinmux Table	Link
	Pinmux Auto-Layout	Link
	Schematic & PCB Design	Link

Highlights

In addition to essential features for IoT development like peripheral interfaces, secure boot, AES/SHA hardware crypto engine, and authenticated debug access, as well as Wi-Fi 4 2.4G and BLE, this IC also supports the following functions:

HiFi5 DSP

Integrated HiFi-5 DSP, architecturally optimized for AI computing, voice wake-up and noise reduction applications. Multi-channel MAC computing capability ensures faster processing. Working with independent application core and network core, three-core collaboration ensures stable low-latency voice applications.

System Security

Integrates various security features including secure boot, symmetric encryption, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing PSA Level 2 and above security protection for customer products

Wi-Fi6

Incorporating advanced technologies such as OFDMA, MU-MIMO, Extended Range and TWT effectively alleviates wireless resource congestion, enhances weak signal coverage, significantly improves transmission quality, reduces latency and extends the battery life of IoT devices through ultra-long sleep cycles

Audio Codec Integrated

Built-in audio codec supports audio input and output, reducing dependency on external components and adaptation costs, facilitating voice interaction and audio playback

Bluetooh Dual Mode Support

Bluetooth Classic and Bluetooth Low Energy concurrent, fully compatible with Bluetooth Classic profiles such as A2DP/HFP, achieving seamless coordination of high-definition stereo audio and low-latency call control, enjoying better wireless audio experience

System Architecture

Real-M300 (KM4)

• Armv8.1-M Architecture (Arm Cortex®-M55 ISA compatible)
• Up to 400MHz clock frequency, 3-stage pipeline
• 16KB I-Cache
• 16KB D-Cache
• Integrated FPU/DSP instruction extensions

KR4

• RISC-V RV32IMAFC Architecture
• 400MHz Single-Issue In-Order Pipeline
• 16KB I-Cache
• 16KB D-Cache
• Open-source ISA architecture, supports custom extensions

Cadence® Tensilica® HiFi 5 DSP

• 500MHz 5-slot VLIW architecture
• 8 x 32-bit MACs/cycle
• 8 x SP-FMACs/cycle
• 32 x 8-bit MACs/cycle
• 256KB dedicated DTCM
• 32KB I-Cache
• 48KB D-Cache

Memory System

• 512KB SRAM
• QSPI NOR Flash: Up to 100MHz
• DQ8 DDR PSRAM: Up to 250MHz

IC Selection

Select in Current Series Select in All Series

Package number	RTL8713ECM-VA4-CG	RTL8713ECM-VA3-CG
Real-M300	400MHz	400MHz
KR4	400MHz	400MHz
DSP	500MHz	500MHz
On-chip SRAM	512KB	512KB
TrustZone	X	X
NOR Flash	X	X
PSRAM	16MB	8MB
Wi-Fi	Wi-Fi 6 (2.4GHz)	Wi-Fi 6 (2.4GHz)
Bluetooth	Dual Mode	Dual Mode
Operating voltage	2.97V ~ 3.63V	2.97V ~ 3.63V
Operating temperature	-20°C ~ 85°C	-20°C ~ 85°C
Package (mm)	QFN68 (8 x 8)	QFN68 (8 x 8)

Peripheral Interfaces

Function	Quantity	Notes
GPIO	43	pcs
SPI	2	pcs
UART	5	pcs
I2C	2	pcs
IR (Infrared Transceiver)	1	pcs
RTC	1	pcs
General Timer	15	pcs
PWM	8	channels
Capture Timer	1	pcs
12-bit ADC	6	channels
Touch Keys	9	keys
GDMA	8	channels
Independent Watchdog	1	pcs
Normal Watchdog	3	pcs
Serial LED Controller	1	pcs
On-chip Temperature Sensor	1	pcs
Digital Microphone	4	channels
I2S	2	Up to 192kHz sampling rate, up to 8-channel data transfer
Audio ADC	3	channels
VAD	1	Supports Voice Activity Detection
PDM Output	1	Mono channel
Audio DAC	1	Mono channel, supports linear output

Security Features

We consistently prioritize security as the core of our products, offering our customers a rich array of security features through hardware design and providing exceptional hardware-based attack resistance, helping to create IoT products with ultimate security.

Features	Support	Comment
Symmetric Encryption Engine		ECDSA
Asymmetric Encryption Engine
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M
OTP Secure Storage
Debug Password Protection
HUK Derivation Mechanism
True Random Number Generator (TRNG)

Secure Boot

Based on asymmetric encryption and digital signature mechanisms, it verifies public key hashes and firmware signatures. This process can prevent tampering and rollback attacks, ensuring that the device only runs trusted firmware

Flash OTF Decryption

Supports both embedded and external Flash, with independent key encryption for multiple firmware. When the CPU executes encrypted firmware, it is decrypted in real-time by hardware, with nearly imperceptible performance impact. Supports unique encryption for each device, preventing injection and cloning attacks

Asymmetric Encryption Engine

In addition to the essential symmetric encryption engines like AES for IoT, we also provide computationally more intensive asymmetric encryption algorithms such as ECDSA, EdDSA, and RSA. This greatly alleviates the computational burden on the CPU and improves encryption and decryption speeds

OTP Secure Storage

Physical-level anti-extraction, key area locked for access only by the security engine, tamper-resistant and read-proof. Supports independent secure zones and CRC verification

True Random Number Generator (TRNG)

Generates high-security random numbers based on physical entropy sources. Certified by NIST for randomness. Provides unpredictability to the system, resistant to prediction attacks

HUK Derivation Mechanism

Hardware Unique Key (HUK) with physical isolation protection, unreadable and unclonable, used for secure derivation of application keys

Debug Password Protection

Strict control over debug interface access through authentication mechanisms. Supports authorized access and permanent closure, eliminating physical debug attacks. Meets security management requirements at different stages of the product lifecycle, effectively enhancing overall security

Security Certifications Support

We offer support for multiple security certifications. By providing these advanced security features and certification support, we aim to assist our customers in efficiently meeting various market entry requirements, ensuring the security and competitiveness of their products.

• PSA
• NIST STS
• NIST CAVP
• FIPS 140-3
• RED (EN 18031)

Most of our chips are capable of achieving PSA Certified Level 2 and Level 3, with some chips already having completed PSA Certified Level 2 certification.

Wireless Connectivity

Wi-Fi Features
Features	Support	Comment
Frequency	2.4GHz
Wi-Fi 6
Bandwidth	20MHz
Maximum PHY rate	114.7Mbps	HE MCS9
Main Protocols	802.11 b/g/n/ax
Sub-protocols	802.11 e/i/w/d/k/v/r
Other Key Protocols	WMM/WPA1~3/WPS/802.1X/EAP/P2P/NAN
UL/DL OFDMA & DL MU-MIMO
SU/MU Beamformee
TWT		Target Wake Time
UL LDPC		UL Low-Density Parity-Check Code
DL STBC		DL Space-Time Block Coding
Auto Antenna Diversity
CSI		Channel State Information
MCC		Multi-Channel Concurrency
Wi-Fi Card Mode
BT Features
Features	Support	Comment
Bluetooth Dual Mode		Bluetooth Classic and Bluetooth Low Energy
Bluetooth BR/EDR		Bluetooth basic rate and enhanced data rate
Scatternet		Scatternet concurrent central/peripheral operation
LE 2Mpbs PHY
LE Long Range		LE Coded PHY long-range mode (125kbps/500kbps)
LE Advertising Extensions		Support multiple advertising sets
LE Periodic Advertising
LE Periodic Advertising Sync Transfer
Direction Finding (AoA/AoD)		Support Angle of Arrival and Angel of Departure
LE Power Control
SIG Mesh		Certified for SIG Mesh v1.1

System Power Consumption

Mode	Wi-Fi	Power Consumption	Unit	Comment
Deep-Sleep	OFF	57.4	µA	PSRAM package
Sleep	OFF	700	µA	PSRAM package
Active	OFF	12.7	mA	0.9v WFI mode, CPU=300MHz, DSP=400MHz
WoWLAN	DTIM=3	1.48	mA	2.4G mode
WoWLAN	DTIM=10	1.36	mA	2.4G mode

NOTICE:

• Test conditions: 3.3V, 25°C
• WoWLAN: System average power consumption

Application Scenarios

• Home appliance
• Smart voice assistant
• Smart bluetooth speaker
• Energy storage

• Intelligent device
• Smart audio
• BLE gateway
• Micro inverter

Development Resources

Software Resources

	HiFi DSP SDK Download	Link
	HiFi DSP SDK Guide	Link
	FreeRTOS SDK Download	Link
	FreeRTOS SDK Guide	Link
	Development Tools	Link
	VS Code Extension	Link

Hardware Resources

	Datasheet	Link
	Pinmux Table	Link
	Pinmux Auto-Layout	Link
	Schematic & PCB Design	Link

EVB Purchase

	PKE8713ECM-VA4-N43 (Taobao)	Link
	PKE8713ECM-VA4-N43 (Amazon)	Link

Highlights

In addition to essential features for IoT development like peripheral interfaces, secure boot, AES/SHA hardware crypto engine, and authenticated debug access, as well as Wi-Fi 4 2.4G and BLE, this IC also supports the following functions:

Arm Cortex®-A32 dual-core Processor

Arm Cortex®-A32 dual-core application processor supports hardware FPU and NEON instruction set, paired with high-speed DDR or PSRAM, providing powerful computing capabilities for multimedia applications, speech recognition, and AI computations

System Security

Integrates various security features including TrustZone, secure boot, symmetric encryption, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing PSA Level 2 and above security protection for customer products

Wi-Fi6

Incorporating advanced technologies such as OFDMA, MU-MIMO, Extended Range and TWT effectively alleviates wireless resource congestion, enhances weak signal coverage, significantly improves transmission quality, reduces latency and extends the battery life of IoT devices through ultra-long sleep cycles

Wi-Fi Dual Band

2.4GHz for Wall-Penetrating Coverage, 5GHz for High-Speed Transmission, Adapting to complex environments, this dual-band synergy comprehensively upgrades the IoT device experience

Display

Supports standard display interfaces, flexibly adaptable from small LCDs to HD screens

Audio Codec Integrated

Built-in audio codec supports audio input and output, reducing dependency on external components and adaptation costs, facilitating voice interaction and audio playback

Bluetooh Dual Mode Support

Bluetooth Classic and Bluetooth Low Energy concurrent, fully compatible with Bluetooth Classic profiles such as A2DP/HFP, achieving seamless coordination of high-definition stereo audio and low-latency call control, enjoying better wireless audio experience

Independent Antenna Design for Wi-Fi & BT

Independent antenna design for Wi-Fi and Bluetooth, separating Wi-Fi and Bluetooth transmission links, avoiding traditional single-antenna coexistence issues. This simultaneously ensures high-speed Wi-Fi transmission and Bluetooth connection stability, significantly improving coexistence performance and user experience

More

USB 2.0 High-Speed Host/Device, SD card/eMMC

System Architecture

Dual-core Arm Cortex®-A32

• Armv8-A architecture (ISA)
• Up to 1.2GHz, 8-stage in-order pipeline
• 32KB I-Cache
• 32KB D-Cache
• 256KB L2 Cache
• Arm TrustZone® security for secure/non-secure domain isolation

Real-M300（KM4）

• Armv8.1-M architecture
• Arm Cortex®-M55 ISA compatible
• Up to 333MHz, 3-stage pipeline
• 64KB I-Cache
• 32KB D-Cache
• Integrated FPU/DSP/MVE extensions
• Arm TrustZone®-M hardware isolation

Real-M200（KM0）

• Armv8-M architecture
• Arm Cortex®-M23 ISA compatible
• Optimized for power-critical applications
• Up to 40MHz
• 16KB I-Cache
• 8KB D-Cache

Memory System

• 256KB SRAM
• QSPI NOR/NAND Flash：up to 100MHz
• DQ8 DDR PSRAM：up to 250MHz
• DQ16 DDR2/DDR3L：up to 533MHz

IC Selection

Select in Current Series Select in All Series

Package number	RTL8730EAH-VA3-CG	RTL8730EAH-VD3-CG	RTL8730EAH-VH6-CG	RTL8730EAM-VA6-CG	RTL8730ELH-VA3-CG	RTL8730ELM-VA7-CG	RTL8730ELM-VA8-CG
CA32	1.2GHz	1.2GHz	1.2GHz	1.2GHz	1.2GHz	1.2GHz	1.2GHz
Real-M300	333MHz	333MHz	333MHz	333MHz	333MHz	333MHz	333MHz
Real-M200	40MHz	40MHz	40MHz	40MHz	40MHz	40MHz	40MHz
On-chip SRAM	256KB	256KB	256KB	256KB	256KB	256KB	256KB
TrustZone
NOR Flash	8MB	16MB	32MB		8MB
PSRAM	8MB	8MB			8MB
DDR			64MB (DDR2)	64MB (DDR2)		128MB (DDR2)	256MB (DDR3L)
Linux
Wi-Fi	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)
Bluetooth	Dual Mode	Dual Mode	Dual Mode	Dual Mode	Dual Mode	Dual Mode	Dual Mode
Operating voltage	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V
Operating temperature	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C
Package (mm)	QFN100 (10 x 10)	QFN100 (10 x 10)	QFN100 (10 x 10)	QFN100 (10 x 10)	DR-QFN144 (11 x 11)	DR-QFN144 (11 x 11)	DR-QFN144 (11 x 11)

Peripheral Interfaces

Function	Quantity	Notes
GPIO	61	pcs
SPI	2	pcs
UART	5	pcs
I2C	3	pcs
IR (Infrared Transceiver)	1	pcs
RTC	1	个
General Timer	12	pcs
PWM	6	channels
Capture Timer	1	pcs
12-bit ADC	6	channels
Battery Measurement Dedicated ADC	1	channel
Touch Key	9	keys
GDMA	8	channels
Independent Watchdog	1	pcs
Secure Watchdog	2	pcs
Normal Watchdog	2	pcs
USB 2.0	1	pcs
SD Host Controller	1	Support SD card/eMMC/SDIO device
Serial LED Controller	1	pcs
MIPI-DSI Display Interface	1	Dual channels, integrated D-PHY, single channel rate 1Gbps
On-chip Temperature Sensor	1	pcs
Digital Microphone	8	channels
I2S	2	Up to 384kHz sampling rate, up to 8 channels data transfer
Audio ADC	5	channels
VAD	1	Supports Voice Activity Detection
PDM Output	1	Dual channel
Audio DAC	2	Dual channel, supports line-out or headphone amplifier

Security Features

We consistently prioritize security as the core of our products, offering our customers a rich array of security features through hardware design and providing exceptional hardware-based attack resistance, helping to create IoT products with ultimate security.

Features	Support	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine		ECDSA/EdDSA/RSA
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M
OTP Secure Storage
Debug Password Protection
HUK Derivation Mechanism
True Random Number Generator (TRNG)

Secure Boot

Based on asymmetric encryption and digital signature mechanisms, it verifies public key hashes and firmware signatures. This process can prevent tampering and rollback attacks, ensuring that the device only runs trusted firmware

Flash OTF Decryption

Supports both embedded and external Flash, with independent key encryption for multiple firmware. When the CPU executes encrypted firmware, it is decrypted in real-time by hardware, with nearly imperceptible performance impact. Supports unique encryption for each device, preventing injection and cloning attacks

Arm TrustZone®-A

Based on the Arm TrustZone® architecture, coupled with a dedicated hardware access control unit, it achieves strong isolation protection for secure memory areas and secure peripherals. Meanwhile, secure firmware is decrypted by the security encryption engine and loaded into the secure RAM area, ensuring protection against leakage and tampering throughout the entire process

Asymmetric Encryption Engine

In addition to the essential symmetric encryption engines like AES for IoT, we also provide computationally more intensive asymmetric encryption algorithms such as ECDSA, EdDSA, and RSA. This greatly alleviates the computational burden on the CPU and improves encryption and decryption speeds

OTP Secure Storage

Physical-level anti-extraction, key area locked for access only by the security engine, tamper-resistant and read-proof. Supports independent secure zones and CRC verification

True Random Number Generator (TRNG)

Generates high-security random numbers based on physical entropy sources. Certified by NIST for randomness. Provides unpredictability to the system, resistant to prediction attacks

HUK Derivation Mechanism

Hardware Unique Key (HUK) with physical isolation protection, unreadable and unclonable, used for secure derivation of application keys

Debug Password Protection

Strict control over debug interface access through authentication mechanisms. Supports authorized access and permanent closure, eliminating physical debug attacks. Meets security management requirements at different stages of the product lifecycle, effectively enhancing overall security

Security Certifications Support

We offer support for multiple security certifications. By providing these advanced security features and certification support, we aim to assist our customers in efficiently meeting various market entry requirements, ensuring the security and competitiveness of their products.

• PSA
• NIST STS
• NIST CAVP
• FIPS 140-3
• RED (EN 18031)

Most of our chips are capable of achieving PSA Certified Level 2 and Level 3, with some chips already having completed PSA Certified Level 2 certification.

Wireless Connectivity

Wi-Fi Features
Features	Support	Comment
Frequency	2.4GHz/5GHz
Wi-Fi 6
Bandwidth	20MHz
MaximumPHY rate	114.7Mbps	HE MCS9
Main Protocols	802.11 a/b/g/n/ac/ax
Sub-protocols	802.11 e/i/w/d/k/v/r
Other Key Protocols	WMM/WPA1~3/WPS/802.1X/EAP/P2P/NAN
UL/DL OFDMA & DL MU-MIMO
SU/MU Beamformee
TWT		Target Wake Time
UL LDPC		UL Low-Density Parity-Check Code
DL STBC		DL Space-Time Block Coding
Auto Antenna Diversity
CSI		Channel State Information
MCC		Multi-Channel Concurrency
BT Features
Features	Support	Comment
Bluetooth Dual Mode		Bluetooth Classic and Bluetooth Low Energy
Bluetooth BR/EDR		Bluetooth basic rate and enhanced data rate
Scatternet		Scatternet concurrent central/peripheral operation
LE 2Mpbs PHY
LE Long Range		LE Coded PHY long-range mode (125kbps/500kbps)
LE Advertising Extensions		Support multiple advertising sets
LE Periodic Advertising
LE Periodic Advertising Sync Transfer
Direction Finding (AoA/AoD)		Support Angle of Arrival and Angel of Departure
LE Isochronous Channels (CIS/BIS)		Support Connected Isochronous Stream and Broadcast Isochronous Stream
LE Power Control
SIG Mesh		Certified for SIG Mesh v1.1
LE Audio		Support Auracast Broadcast Audio
Dedicated antenna for Bluetooth		Wi-Fi and Bluetooth each use their own RF and antenna, significantly improving coexistence performance

System Power Consumption

Mode	Wi-Fi	Power Consumption	Unit	Comment
Deep-Sleep	OFF	23.1	µA	RTL8730EAH-VA3
Sleep	OFF	345	µA	RTL8730EAH-VA3
Active	OFF	17.6	mA	0.9v WFI mode, CA32=460MHz
WoWLAN	DTIM=3	691	µA	2.4G mode
WoWLAN	DTIM=10	470	µA	2.4G mode

NOTICE:

• Test conditions: 3.3V, 25°C
• WoWLAN: System average power consumption

Application Scenarios

• Smart speaker
• Industrial gateway
• Voice-controlled appliance
• Smart thermostat
• Smart panel

• Smart home
• Wearable devices
• Centralized control system
• Ethernet to Wi-Fi dongle

Development Resources

Software Resources

	Linux SDK Download	Link
	Linux SDK Guide	Link
	FreeRTOS SDK Download	Link
	FreeRTOS SDK Guide	Link
	Development Tools	Link
	VS Code Extension	Link

Hardware Resources

	Datasheet	Link
	Pinmux Table	Link
	Pinmux Auto-Layout	Link
	Schematic & PCB Design	Link

Highlights

In addition to integrating the essential peripheral interfaces, secure boot, hardware encryption engine AES/SHA, authenticated debug access, Wi-Fi 4 2.4GHz, BLE, and other important functions for IoT development, this IC also supports the following features:

System Security

Integrates various security features including TrustZone, secure boot, symmetric encryption, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing PSA Level 2 and above security protection for customer products

Wi-Fi6

Incorporating advanced technologies such as OFDMA, MU-MIMO, Extended Range and TWT effectively alleviates wireless resource congestion, enhances weak signal coverage, significantly improves transmission quality, reduces latency and extends the battery life of IoT devices through ultra-long sleep cycles

Wi-Fi Dual Band

2.4GHz for Wall-Penetrating Coverage, 5GHz for High-Speed Transmission, Adapting to complex environments, this dual-band synergy comprehensively upgrades the IoT device experience

Wi-Fi R-MESH

Multi-hop, Multi-branch Intelligent Networking, Rapid Fault Self-Healing, Ultra-Low Latency, and High Stability comprehensively overcome traditional Mesh network bottlenecks, redefining the wireless experience across all scenarios

Display

Equipped with a UI rendering hardware accelerator and an MJPEG hardware decoder to enhance HMI performance on smart panels; supports standard display interfaces for flexible adaptation from small LCDs to high‑definition screens.

Ethernet Interface

Integrated Ethernet interface ensures reliable transmission of critical data in industrial environments and high-interference scenarios. Suitable for applications with stringent network stability requirements such as industrial automation and security monitoring

Ultra-Low Power

Supporting ultra-low-power WoWLAN and enabling rapid restoration of the original runtime context, empowering battery-powered devices with network listening wake-up functionality

More

Integrates USB 2.0 High-Speed Host/Device, SDIO Host/Device, SD card/eMMC, DMIC/I2S

System Architecture

Real-M300 (KM4TZ)

• Armv8.1-M Architecture
• Arm Cortex®-M55 ISA compatible
• Up to 334MHz, 3-stage pipeline
• 16KB I-Cache
• 16KB D-Cache
• Arm TrustZone®-M hardware-level isolation

Real-M300 (KM4NS)

• Armv8.1-M Architecture
• Arm Cortex®-M55 ISA compatible
• Up to 334MHz, 3-stage pipeline
• 16KB I-Cache
• 16KB D-Cache

Memory System

• 512KB SRAM
• QSPI NOR Flash: Up to 104MHz
• DQ8/DQ16 DDR PSRAM: Up to 200MHz
• Bus Architecture: Multi-layer AXI bus for parallel access

IC Selection

Select in Current Series Select in All Series

Part number	RTL8721FAF-VT2-CG	RTL8721FAF-VA3-CG	RTL8721FAM-VT2-CG	RTL8721FCM-VA2-CG	RTL8721FCM-VA3-CG	RTL8721FCM-VA4-CG	RTL8721FLM-VA4-CG
Real-M300 (KM4TZ)	320MHz	320MHz	320MHz	320MHz	320MHz	320MHz	320MHz
Real-M300 (KM4NS)	320MHz	320MHz	320MHz	320MHz	320MHz	320MHz	320MHz
On-chip SRAM	512KB	512KB	512KB	512KB	512KB	512KB	512KB
TrustZone	Y	Y	Y	Y	Y	Y	Y
NOR Flash	4MB	8MB	X	X	X	X	X
PSRAM	X	X	4MB	4MB	8MB	16MB	16MB
Wi-Fi	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)	Wi-Fi 6 (2.4GHz + 5GHz)
Bluetooth	LE	LE	LE	LE	LE	LE	LE
Operating voltage	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V
Operating temperature	-40°C ~ 105°C	-20°C ~ 85°C	-40°C ~ 105°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C
Package (mm)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN68 (8 x 8)	QFN68 (8 x 8)	QFN68 (8 x 8)	QFN100 (10 x 10)

Peripheral Interfaces

Function	Quantity	Notes
GPIO	68	pcs
SPI	2	pcs
UART	5	pcs
I2C	2	pcs
I2C-like	1	pcs
IR (Infrared Transceiver)	1	pcs
RTC	1	pcs
General Timer	4	pcs
PWM	16	channels
Capture Timer	1	pcs
PMC Timer	2	groups
12-bit ADC	12	channels
Touch Key	9	keys
GDMA	8	channels
Independent Watchdog	1	pcs
Secure Watchdog	1	pcs
General Watchdog	2	pcs
USB 2.0	1	pcs
SDIO Device	1	pcs
SD Host Controller	1	Support SD card/eMMC/SDIO device
Pixel Processing Engine	1	For fast image data processing
LCDC	1	pcs
MJPEG	1	pcs
A2C	2	pcs, Compatible with ISO11898-1
Ethernet MAC	1	pcs
Audio Codec	1	Includes 2-channel digital microphone (DMIC)
I2S	1	Up to 192kHz sampling, up to 8-channel Tx/Rx
On-chip Temperature Sensor	1	pcs

Security Features

We consistently prioritize security as the core of our products, offering our customers a rich array of security features through hardware design and providing exceptional hardware-based attack resistance, helping to create IoT products with ultimate security.

Features	Support	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine		ECDSA/EdDSA/RSA
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M
OTP Secure Storage
Debug Password Protection
HUK Derivation Mechanism
True Random Number Generator (TRNG)

Secure Boot

Based on asymmetric encryption and digital signature mechanisms, it verifies public key hashes and firmware signatures. This process can prevent tampering and rollback attacks, ensuring that the device only runs trusted firmware

Flash OTF Decryption

Supports both embedded and external Flash, with independent key encryption for multiple firmware. When the CPU executes encrypted firmware, it is decrypted in real-time by hardware, with nearly imperceptible performance impact. Supports unique encryption for each device, preventing injection and cloning attacks

Arm TrustZone®-M

Based on the Arm TrustZone® architecture, coupled with a dedicated hardware access control unit, it achieves strong isolation protection for secure memory areas and secure peripherals. Meanwhile, secure firmware is decrypted by the security encryption engine and loaded into the secure RAM area, ensuring protection against leakage and tampering throughout the entire process

Asymmetric Encryption Engine

In addition to the essential symmetric encryption engines like AES for IoT, we also provide computationally more intensive asymmetric encryption algorithms such as ECDSA, EdDSA, and RSA. This greatly alleviates the computational burden on the CPU and improves encryption and decryption speeds

OTP Secure Storage

Physical-level anti-extraction, key area locked for access only by the security engine, tamper-resistant and read-proof. Supports independent secure zones and CRC verification

True Random Number Generator (TRNG)

Generates high-security random numbers based on physical entropy sources. Certified by NIST for randomness. Provides unpredictability to the system, resistant to prediction attacks

HUK Derivation Mechanism

Hardware Unique Key (HUK) with physical isolation protection, unreadable and unclonable, used for secure derivation of application keys

Debug Password Protection

Strict control over debug interface access through authentication mechanisms. Supports authorized access and permanent closure, eliminating physical debug attacks. Meets security management requirements at different stages of the product lifecycle, effectively enhancing overall security

Security Certifications Support

We offer support for multiple security certifications. By providing these advanced security features and certification support, we aim to assist our customers in efficiently meeting various market entry requirements, ensuring the security and competitiveness of their products.

• PSA
• NIST STS
• NIST CAVP
• FIPS 140-3
• RED (EN 18031)

Most of our chips are capable of achieving PSA Certified Level 2 and Level 3, with some chips already having completed PSA Certified Level 2 certification.

Wireless Connectivity

Wi-Fi Features
Features	Support	Comment
Frequency	2.4GHz/5GHz
Wi-Fi 6
Bandwidth	20MHz
MaximumPHY rate	114.7Mbps	HE MCS9
Main Protocols	802.11 a/b/g/n/ac/ax
Sub-protocols	802.11 e/i/w/d/k/v/r
Other Key Protocols	WMM/WPA1~3/WPS/802.1X/EAP/P2P/NAN
UL/DL OFDMA & DL MU-MIMO
SU/MU Beamformee
TWT		Target Wake Time
UL LDPC		UL Low-Density Parity-Check Code
DL STBC		DL Space-Time Block Coding
Auto Antenna Diversity
CSI		Channel State Information
MCC		Multi-Channel Concurrency
R-MESH		Realtek MESH
Wi-Fi Card Mode
BT Features
Features	Support	Comment
Bluetooth LE		Bluetooth Low Energy
Scatternet		Scatternet concurrent central/peripheral operation
LE 2Mpbs PHY
LE Long Range		LE Coded PHY long-range mode (125kbps/500kbps)
LE Advertising Extensions		Support multiple advertising sets
SIG Mesh		Certified for SIG Mesh v1.1

System Power Consumption

Mode	Wi-Fi	Power Consumption	Unit	Comment
Deep-Sleep	OFF	11.3	µA	Flash package
Sleep	OFF	48.2	µA	Flash package
Active	OFF	13.1	mA	0.9v WFI mode, CPU=266MHz
WoWLAN	DTIM=3	185	µA	2.4G mode
WoWLAN	DTIM=10	100	µA	2.4G mode

NOTICE:

• Test conditions: 3.3V, 25°C
• WoWLAN: System average power consumption

Application Scenarios

• Smart home
  • Lighting (dimming) control, switch and plugs
  • Home and kitchen appliances
• Industrial 4.0
• Low-power IoT devices
  • Smart door lock
  • Low-power Wi-Fi camera

• HMI smart display
• Health-care devices
• Wearables
• Portable devices
• Gaming accessories
• Wireless audio
• New energy field
• Ethernet to Wi-Fi dongle

Development Resources

Software Resources

	FreeRTOS SDK Download	Link
	FreeRTOS SDK Guide	Link
	Development Tools	Link
	VS Code Extension	Link

Hardware Resources

	Datasheet	Link
	Pinmux Table	Link
	Pinmux Auto-Layout	Link
	Schematic & PCB Design	Link

Highlights

In addition to essential features for IoT development like peripheral interfaces, secure boot, AES/SHA hardware crypto engine, and authenticated debug access, as well as Wi-Fi 4 2.4G and BLE, this IC also supports the following functions:

Dual-Core Architecture

Integrates two Armv8-M processors, running up to 200MHz and 20MHz respectively. Supports FPU/DSP extension instructions, integrates 512KB SRAM, and supports DQ8 DDR PSRAM.

System Security

Integrates various security features including TrustZone, secure boot, symmetric encryption, EFUSE storage, Flash XIP decryption, etc., to safeguard the security of customer products

Wi-Fi Dual Band

2.4GHz for Wall-Penetrating Coverage, 5GHz for High-Speed Transmission, Adapting to complex environments, this dual-band synergy comprehensively upgrades the IoT device experience

Display

Supports standard display interfaces, flexibly adaptable from small LCDs to HD screens

Audio Codec Integrated

Built-in audio codec supports audio input and output, reducing dependency on external components and adaptation costs, facilitating voice interaction and audio playback

Ultra-Low Power

Supporting ultra-low-power WoWLAN and enabling rapid restoration of the original runtime context, empowering battery-powered devices with network listening wake-up functionality

More

Integrates USB 2.0 High-Speed Host/Device, SD card/eMMC, and Key-scan.

System Architecture

Real-M300

• Armv8-M Architecture
• Arm Cortex®-M33 ISA compatible
• Integrated FPU/DSP instruction extensions
• Up to 200MHz
• 32KB I-Cache
• 4KB D-Cache

Real-M200

• Armv8-M Architecture
• Arm Cortex®-M23 ISA compatible
• Up to 20MHz
• 16KB I-Cache
• 4KB D-Cache

Memory System

• Real-300: 512KB SRAM
• Real-300: 4MB PSRAM, 8-bit DDR
• Real-200: 64KB SRAM
• Real-200: 1KB retention SRAM, retains data in power-saving mode

IC Selection

Part number	RTL8720DN-VA1-CG	RTL8720DN-VT1-CG	RTL8720DM-VA1-CG	RTL8720DF-VA1-CG	RTL8720DF-VT1-CG	RTL8721DM-VA1-CG	RTL8722DM-VA1-CG	RTL8722DM-VP1-CG
Real-M300	200MHz	200MHz	200MHz	200MHz	200MHz	200MHz	200MHz	200MHz
Real-M200	200MHz	200MHz	200MHz	200MHz	200MHz	200MHz	200MHz	200MHz
On-chip SRAM	512KB	512KB	512KB	512KB	512KB	512KB	512KB	512KB
TrustZone	Y	Y	Y	Y	Y	Y	Y	Y
NOR Flash	X	X	X	4MB	4MB	X	X	X
PSRAM	X	X	4MB	X	X	4MB	4MB	4MB
Wi-Fi	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz + 5GHz)
Bluetooth	LE	LE	LE	LE	LE	LE	LE	LE
Operating voltage	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V
Operating temperature	-20°C ~ 85°C	-40°C ~ 105°C	-20°C ~ 85°C	-20°C ~ 85°C	-40°C ~ 105°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C
Package (mm)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN48 (6 x 6)	QFN68 (8 x 8)	QFN88 (10 x 10)	QFN88 (10 x 10)

Peripheral Interfaces

Function	Quantity	Notes
GPIO	58	pcs
SPI	2	pcs
UART	4	pcs
I2C	1	pcs
USI	1	pcs
Key-Scan	36	keys
Quad-Decoder	1	pcs
IR (Infrared Transceiver)	1	pcs
SDIO Device	1	pcs
SD Host Controller	1	Supports SD Card/eMMC/SDIO Device
USB 2.0	1	pcs
RTC	1	pcs
PWM	18	channels
Touch Key	5	keys
GDMA	6	channels
12-bit ADC	7	channels
Battery Measurement Dedicated ADC	1	channel
LCDC	1	Supports RGB interface and I8080 interface
AES/SHA Encryption Engine	1	Supports AES256/192/128 and SHA256
Normal Watchdog	1	pcs
Audio ADC	2	channels
Digital Microphone	2	channels
I2S	1	Up to 192kHz sampling rate, up to 6-channel data transfer
Audio DAC	2	Stereo, supports linear output or headphone amplifier

Security Features

We consistently prioritize security as the core of our products, offering our customers a rich array of security features through hardware design and providing exceptional hardware-based attack resistance, helping to create IoT products with ultimate security.

Features	Support	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M
OTP Secure Storage		EFUSE Secure Storage
Debug Password Protection
HUK Derivation Mechanism
True Random Number Generator (TRNG)

Secure Boot

Based on asymmetric encryption and digital signature mechanisms, it verifies public key hashes and firmware signatures. This process can prevent tampering and rollback attacks, ensuring that the device only runs trusted firmware

Flash OTF Decryption

Supports both embedded and external Flash, with independent key encryption for multiple firmware. When the CPU executes encrypted firmware, it is decrypted in real-time by hardware, with nearly imperceptible performance impact. Supports unique encryption for each device, preventing injection and cloning attacks

Arm TrustZone®-M

Based on the Arm TrustZone® architecture, coupled with a dedicated hardware access control unit, it achieves strong isolation protection for secure memory areas and secure peripherals. Meanwhile, secure firmware is decrypted by the security encryption engine and loaded into the secure RAM area, ensuring protection against leakage and tampering throughout the entire process

EFUSE Secure Storage

After locking the key area, access is limited to the security engine, preventing tampering and unauthorized reading

Debug Password Protection

Strict control over debug interface access through authentication mechanisms. Supports authorized access and permanent closure, eliminating physical debug attacks. Meets security management requirements at different stages of the product lifecycle, effectively enhancing overall security

Wireless Connectivity

Wi-Fi Features
Features	Support	Comment
Frequency	2.4GHz/5GHz
Wi-Fi 6
Bandwidth	40MHz
MaximumPHY rate	150Mbps	HT MCS7
Main Protocols	802.11 a/b/g/n
Sub-protocols	802.11 e/i/w/d/k/v/r
Other Key Protocols	WMM/WPA1~3/WPS/802.1X/EAP
UL LDPC		UL Low-Density Parity-Check Code
DL STBC		DL Space-Time Block Coding
Auto Antenna Diversity
BT Features
Features	Support	Comment
Bluetooth LE		Bluetooth Low Energy
Scatternet		Scatternet concurrent central/peripheral operation
LE 2Mpbs PHY
SIG Mesh		Certified for SIG Mesh v1.1
High-Power Mode		8dBm

System Power Consumption

Mode	Wi-Fi	Power Consumption	Unit	Comment
Deep-Sleep	OFF	10	µA
Sleep	OFF	75	µA
Active	OFF	20	mA
WoWLAN	DTIM=3		µA
WoWLAN	DTIM=10		µA

NOTICE:

• Test conditions: 3.3V, 25°C
• WoWLAN: System average power consumption

Application Scenarios

• Home appliance control panel
• Smart door lock
• Smart toy
• Smart voice
• Smart remote controller

• Wi-Fi headset
• Wi-Fi gamepad
• BLE gateway
• Smart POS

Development Resources

Software Resources

	FreeRTOS SDK Download	Link
	FreeRTOS SDK Guide	Link
	Development Tools	Link

Hardware Resources

	Datasheet	Link
	Pinmux Table	Link

EVB Purchase

	PKE8720DF-A00 (Taobao)	Link
	PKE8720DF-C13 (Taobao)	Link

Highlights

Realtek RTL8735B series is a new generation of highly integrated Wi-Fi/Bluetooth/Image ISP eight-in-one single-chip solution, featuring a 10mm x 10mm QFN package. Its low power consumption design significantly extends the system's battery life. The single chip also provides rich I/O interfaces and has successfully assisted customers in designing compact IoT doorbells, portable AI cameras, home appliances with AIoT camera video requirements, applications for edge AI audio-visual recognition, and IoT devices that can be powered by batteries.

NPU Engine

Integrates an NPU engine with up to 0.4TOPS computing power, and also integrates an Armv8-M processor, up to 500MHz.

ISP/Video

Supports 2K/FHD high-definition video, 1080p@30fps + 720p@30fps, 2K@24fps, and supports millisecond-level fast boot-up to ensure no footage is missed.

System Security

Integrates various security features including TrustZone, secure boot, symmetric encryption, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., to safeguard the security of customer products

Wi-Fi Dual Band

2.4GHz for Wall-Penetrating Coverage, 5GHz for High-Speed Transmission, Adapting to complex environments, this dual-band synergy comprehensively upgrades the IoT device experience

Audio Codec Integrated

Built-in audio codec supports audio input and output, reducing dependency on external components and adaptation costs, facilitating voice interaction and audio playback

More

Integrates H.264/H.265 video encoding, supports AI model conversion: yolov3/4/7-tiny and CNN Gray/RGB.

System Architecture

Real-M500 CPU

• Armv8M architecture
• Up to 500MHz
• 32KB I-Cache
• 32KB D-Cache

CNN AI Engine

• 0.4TOPS@INT8/INT16 (NPU) computing power

Memory System

• Embedded 64MB/128MB/256MB DDR2/DDR3 memory: 533MHz
• Internal 768KB ROM: 250MHz
• Internal 512KB SRAM: 250MHz
• Supports SPI NOR Flash or NAND Flash

IC Selection

Part number	RTL8735BDM-VA4-CG	RTL8735BM-VA4-CG	RTL8735BDM-VA9-CG
Real-M500	500MHz	500MHz	500MHz
NPU	0.4TOPS@INT8/INT16	0.4TOPS@INT8/INT16	0.4TOPS@INT8/INT16
ISP/Video Processor	Up to 2K/FHD	Up to 2K/FHD	Up to 2K/FHD
On-chip SRAM	512KB	512KB	512KB
TrustZone	Y	Y	Y
DDR	128MB (DDR2)	128MB (DDR2)	256MB (DDR3)
Wi-Fi	Wi-Fi 4 (2.4GHz + 5GHz)	Wi-Fi 4 (2.4GHz)	Wi-Fi 4 (2.4GHz + 5GHz)
Bluetooth	LE	LE	LE
Operating voltage	3.135V ~ 3.465V	3.135V ~ 3.465V	3.135V ~ 3.465V
Operating temperature	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C
Package (mm)	QFN128 (10 x 10)	QFN128 (10 x 10)	QFN128 (10 x 10)

Video/ISP Features

• Multi-stream real-time H.265/H.264/JPEG encoding
• Supports 5-megapixel (2592x1944) sensor
• 1080p@45fps; 2K@24fps
• Supports 12bit Bayer pattern input and 8bit YUY2 input from CMOS sensor
• Supports MIPI CSI-2 four data lane
• CBR/VBR/CVBR/FIXQP/AVBR rate control, ROI/GDR, rotation/cropping
• Supports Auto Banding, Auto Exposure, Auto White Balance
• Advanced temporal and spatial noise reduction(3DNR)

• Lens shading compensation/ Black level compensation and dead pixel cancellation/ horizontal lens distortion correction/ High dynamic range fusion and tone mapping for HDR sensor input
• Programmable gamma table
• Digital WDR
• Image enhancement(brightness, contrast, saturation, hue and sharpness)
• ISP tool for easy image quality tuning

Peripheral Interfaces

Function	Quantity	Notes
GPIO	59	pcs
SPI	2	pcs
UART	4	pcs
I2C	2	pcs
PWM	12	channels
ADC	8	channels
GDMA	12	channels
USB 2.0	1	pcs
SD Host Controller	1	Supports SD card/eMMC/SDIO devices
Audio DAC	1	channel
Audio ADC	1	channel
Digital Microphone	2	channels

Security Features

We consistently prioritize security as the core of our products, offering our customers a rich array of security features through hardware design and providing exceptional hardware-based attack resistance, helping to create IoT products with ultimate security.

Features	Support	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine		ECDSA/EdDSA/RSA
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M
OTP Secure Storage
Debug Password Protection
HUK Derivation Mechanism
True Random Number Generator (TRNG)

Secure Boot

Based on asymmetric encryption and digital signature mechanisms, it verifies public key hashes and firmware signatures. This process can prevent tampering and rollback attacks, ensuring that the device only runs trusted firmware

Flash OTF Decryption

Supports both embedded and external Flash, with independent key encryption for multiple firmware. When the CPU executes encrypted firmware, it is decrypted in real-time by hardware, with nearly imperceptible performance impact. Supports unique encryption for each device, preventing injection and cloning attacks

Arm TrustZone®-M

Based on the Arm TrustZone® architecture, coupled with a dedicated hardware access control unit, it achieves strong isolation protection for secure memory areas and secure peripherals. Meanwhile, secure firmware is decrypted by the security encryption engine and loaded into the secure RAM area, ensuring protection against leakage and tampering throughout the entire process

Asymmetric Encryption Engine

In addition to the essential symmetric encryption engines like AES for IoT, we also provide computationally more intensive asymmetric encryption algorithms such as ECDSA, EdDSA, and RSA. This greatly alleviates the computational burden on the CPU and improves encryption and decryption speeds

OTP Secure Storage

Physical-level anti-extraction, key area locked for access only by the security engine, tamper-resistant and read-proof. Supports independent secure zones and CRC verification

True Random Number Generator (TRNG)

Generates high-security random numbers based on physical entropy sources. Certified by NIST for randomness. Provides unpredictability to the system, resistant to prediction attacks

HUK Derivation Mechanism

Hardware Unique Key (HUK) with physical isolation protection, unreadable and unclonable, used for secure derivation of application keys

Debug Password Protection

Strict control over debug interface access through authentication mechanisms. Supports authorized access and permanent closure, eliminating physical debug attacks. Meets security management requirements at different stages of the product lifecycle, effectively enhancing overall security

Wireless Connectivity

Wi-Fi Features
Features	Support	Comment
Frequency	2.4GHz/5GHz
Wi-Fi 6
Bandwidth	20MHz
MaximumPHY rate	72Mbps	HT MCS7
Main Protocols	802.11 a/b/g/n
Sub-protocols	802.11 e/i/w/d/k/v/r
Other Key Protocols	WMM/WPA1~3/WPS/802.1X/EAP
UL LDPC		UL Low-Density Parity-Check Code
DL STBC		DL Space-Time Block Coding
Auto Antenna Diversity
BT Features
Features	Support	Comment
Bluetooth LE		Bluetooth Low Energy
Scatternet		Scatternet concurrent central/peripheral operation
LE 2Mpbs PHY
LE Long Range		LE Coded PHY long-range mode (125kbps/500kbps)
LE Advertising Extensions		Support multiple advertising sets

Application Scenarios

• IoT doorbell
• Portable AI camera
• Home appliances with AIoT camera

• Edge AI audio-visual recognition demands
• Battery-powered IoT devices

Development Resources

Software Resources

	FreeRTOS SDK Guide	Link
	Arduino SDK Guide	Link
	Arduino SDK Download	Link

Hardware Resources

Datasheet

Link