All ICs

SoCs

Ameba IoT wireless solutions, featuring high integration, stable performance, low power consumption, and enhanced security

Arm®/RISC-V | Wi-Fi | Bluetooth | AI | Audio | HMI

SoC Selection

All Mainstream High-Performance DSP Series ISP Series Select by Application

Smart Control Audio Smart Display Edge AI IoT Camera

Highlights

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

System Security

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

Dual-band Wi-Fi

Supporting the 5GHz band to effectively avoid common interference sources (Bluetooth, Zigbee, microwave devices) through spectrum isolation. Leveraging abundant non-overlapping channel resources to significantly reduce co-channel interference risks, delivering high-speed, low-interference stable transmission performance.

Wi-Fi R-MESH

Intelligent multi-hop multi-branch networking, significantly extending AP connection range; Underlying forwarding and control, transparent to application-layer development, eliminates traditional Mesh adaptation constraints; Rapid self-healing, ultra-low latency, ultra-high stability, comprehensively breaking traditional Mesh performance bottlenecks.

Display

UI rendering hardware accelerator provides smooth and fast interface animations, enhancing the human-machine interaction experience of smart panels. Supports OSPI/QSPI/SPI 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

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

Part Number

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
NOR Flash	4MB	4MB	/	4MB	/	/	4MB	/
PSRAM	/	/	4MB	/	4MB	8MB	/	4MB
Wi-Fi	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)
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	RTL8721DAF	RTL8721DAM	RTL8721DCF	RTL8721DCM	RTL8721DGF	RTL8721DGM
GPIO	21	14	40	33	54	42
SPI	2	2	2	2	2	2
UART	4	4	4	4	4	4
I2C	2	2	2	2	2	2
OSPI/QSPI	1	1	1	1	1	1
I2S	2	2	2	2	2	2
Digital microphone	2	2	2	2	2	2
ADC and Cap-touch	3	3	7	7	7	7
Infrared Transeiver	1	1	1	1	1	1
Key-Scan	8 x 8	N x (14-N)	8 x 8	8 x 8	8 x 8	8 x 8
SWD Interface	1	1	1	1	1	1
General Timer	10	10	10	10	10	10
Capture Timer	1	1	1	1	1	1
RTC	1	1	1	1	1	1
NeoPixel LED	1	1	1	1	1	1
PWM	8	8	8	8	8	8
USB	1	1	1	1	1	1
SDIO_DEVICE	1	1	1	1	1	1
IWDG	1	1	1	1	1	1
System WDG	3	3	3	3	3	3
GDMA	8	8	8	8	8	8

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	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine	/	/
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M					/		/
EFUSE Secure Storage
True Random Number Generator	/
HUK Derivation Mechanism	/
Authenticated Debug Access

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

Authenticated Debug Access

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
	Pin Multiplexing	Link
	Pin Assignment Tool	Link
	Hardware Design Guide	Link

EVB Purchase

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

Highlights

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

System Security

Integrates various security features including TrustZone, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing 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

System Architecture

Real-M300 (KM4)

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

Part Number

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
On-chip SRAM	768KB	768KB	768KB	768KB
TrustZone
NOR Flash	4MB	8MB	/	/
PSRAM	/	/	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	RTL8720EAF	RTL8720EAM
GPIO	25	18
SPI	2	2
UART	5	5
I2C	2	2
I2S	2	2
PDM	1	1
Digital microphone	4	4
Voice Activity Detection	1	1
ADC and Cap-touch	10	10
SWD Interface	1	1
General Timer	13	13
Capture Timer	1	1
RTC	1	1
NeoPixel LED	1	1
PWM	8	8
IWDG	1	1
System WDG	3	3
GDMA	8	8
Thermal	1	1

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	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine	/	/
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M					/		/
EFUSE Secure Storage
True Random Number Generator	/
HUK Derivation Mechanism	/
Authenticated Debug Access

Asymmetric Encryption Engine

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

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

Authenticated Debug Access

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
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
	Pin Multiplexing	Link
	Pin Assignment Tool	Link
	Hardware Design Guide	Link

EVB Purchase

RTL8720EAM EVB (Taobao)

Link

Highlights

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

System Security

Integrates various security features including asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing 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

System Architecture

Real-M300 (KM4)

• Armv8.1-M Architecture
• Arm Cortex®-M55 ISA compatible
• Up to 400MHz, 3-stage pipeline
• 16KB I-Cache
• 16KB D-Cache
• 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

Part Number

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
On-chip SRAM	512KB	512KB	512KB
TrustZone	/	/	/
NOR Flash	4MB	8MB	/
PSRAM	/	/	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	RTL8710ECF	RTL8710ECM
GPIO	25	18
SPI	2	2
UART	5	5
I2C	2	2
I2S	2	2
PDM	1	1
Digital microphone	4	4
Voice Activity Detection	1	1
ADC and Cap-touch	10	10
SWD Interface	1	1
General Timer	13	13
Capture Timer	1	1
RTC	1	1
NeoPixel LED	1	1
PWM	8	8
IWDG	1	1
System WDG	2	2
GDMA	8	8
Thermal	1	1

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	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine	/	/
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M					/		/
EFUSE Secure Storage
True Random Number Generator	/
HUK Derivation Mechanism	/
Authenticated Debug Access

Asymmetric Encryption Engine

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

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

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

Authenticated Debug Access

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
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
	Pin Multiplexing	Link
	Pin Assignment Tool	Link
	Hardware Design Guide	Link

EVB Purchase

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

Highlights

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

HiFi5 DSP

Integrated HiFi5 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, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing 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

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

Real-M300 (KM4)

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

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

Part Number

Select in Current Series Select in All Series

Package number	RTL8726EAM-VA4-CG
DSP	500MHz
Real-M300	400MHz
KR4	400MHz
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	RTL8726EAM
GPIO	35
SPI	2
UART	5
I2C	2
I2S	2
PDM	1
Audio analog output	1
Digital microphone	4
Analog microphone	3
Audio DAC	1
Voice Activity Detection	1
ADC and Cap-touch	10
SWD Interface	1
General Timer	13
Capture Timer	1
RTC	1
NeoPixel LED	1
PWM	8
IWDG	1
System WDG	4
GDMA	8
Thermal	1

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	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine	/	/
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M					/		/
EFUSE Secure Storage
True Random Number Generator	/
HUK Derivation Mechanism	/
Authenticated Debug Access

Asymmetric Encryption Engine

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

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

Authenticated Debug Accesss

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
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
	Pin Multiplexing	Link
	Pin Assignment Tool	Link
	Hardware Design Guide	Link

Highlights

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

HiFi5 DSP

Integrated HiFi5 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 asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing 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

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

Real-M300 (KM4)

• Armv8.1-M Architecture
• Arm Cortex®-M55 ISA compatible
• Up to 400MHz, 3-stage pipeline
• 16KB I-Cache
• 16KB D-Cache
• 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

Part Number

Select in Current Series Select in All Series

Package number	RTL8713ECM-VA3-CG	RTL8713ECM-VA4-CG
DSP	500MHz	500MHz
Real-M300	400MHz	400MHz
KR4	400MHz	400MHz
On-chip SRAM	512KB	512KB
TrustZone	/	/
NOR Flash	/	/
PSRAM	8MB	16MB
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	RTL8713ECM
GPIO	35
SPI	2
UART	5
I2C	2
I2S	2
PDM	1
Audio analog output	1
Digital microphone	4
Analog microphone	3
Audio DAC	1
Voice Activity Detection	1
ADC and Cap-touch	10
SWD Interface	1
General Timer	13
Capture Timer	1
RTC	1
NeoPixel LED	1
PWM	8
IWDG	1
System WDG	3
GDMA	8
Thermal	1

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	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine	/	/
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M					/		/
EFUSE Secure Storage
True Random Number Generator	/
HUK Derivation Mechanism	/
Authenticated Debug Access

Asymmetric Encryption Engine

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

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

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

Authenticated Debug Access

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
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
	Pin Multiplexing	Link
	Pin Assignment Tool	Link
	Hardware Design Guide	Link

EVB Purchase

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

Highlights

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

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. With Linux/RTOS options available, it offers greater convenience for customer development.

System Security

Integrates various security features including TrustZone, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing 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

Dual-band Wi-Fi

Supporting the 5GHz band to effectively avoid common interference sources (Bluetooth, Zigbee, microwave devices) through spectrum isolation. Leveraging abundant non-overlapping channel resources to significantly reduce co-channel interference risks, delivering high-speed, low-interference stable transmission performance.

Display

Supports standard MIPI 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, and support LE audio, 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 pipeline
• 32KB I-Cache
• 32KB D-Cache
• 256KB L2 Cache
• Arm TrustZone®

Real-M300（KM4）

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

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 230MHz
• DQ16 DDR2/DDR3L：up to 533MHz

Part Number

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 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)
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	RTL8730EAH	RTL8730EAM	RTL8730ELH	RTL8730ELM
GPIO	38	32	59	53
SPI	2	2	2	2
UART	4	4	4	4
I2C	3	3	3	3
MIPI	1	1	1	1
I2S	2	2	2	2
PDM	2	2	2	2
Audio analog output	2	2	2	2
Digital microphone	8	8	8	8
Analog microphone	4	4	5	5
Audio DAC	2	2	2	2
Voice Activity Detection	1	1	1	1
ADC and Cap-touch	4	4	9	9
Infrared Transeiver	1	1	1	1
SWD Interface	1	1	1	1
General Timer	12	12	12	12
Capture Timer	1	1	1	1
RTC	1	1	1	1
NeoPixel LED	1	1	1	1
PWM	6	6	6	6
USB	1	1	1	1
SDIO_HOST	1	1	1	1
IWDG	1	1	1	1
System WDG	4	4	4	4
GDMA	8	8	8	8
Thermal	1	1	1	1

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	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine	/	/
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M					/		/
EFUSE Secure Storage
True Random Number Generator	/
HUK Derivation Mechanism	/
Authenticated Debug Access

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

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

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

Authenticated Debug Access

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
	Pin Multiplexing	Link
	Pin Assignment Tool	Link
	Hardware Design Guide	Link

Highlights

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

System Security

Integrates various security features including TrustZone, asymmetric encryption, TRNG, HUK, OTP storage, Flash XIP decryption, etc., providing 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

Dual-band Wi-Fi

Supporting the 5GHz band to effectively avoid common interference sources (Bluetooth, Zigbee, microwave devices) through spectrum isolation. Leveraging abundant non-overlapping channel resources to significantly reduce co-channel interference risks, delivering high-speed, low-interference stable transmission performance.

Wi-Fi R-MESH

Intelligent multi-hop multi-branch networking, significantly extending AP connection range; Underlying forwarding and control, transparent to application-layer development, eliminates traditional Mesh adaptation constraints; Rapid self-healing, ultra-low latency, ultra-high stability, comprehensively breaking traditional Mesh performance bottlenecks.

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

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

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

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/NAND Flash: Up to 104MHz
• DQ8/DQ16 DDR PSRAM: Up to 200MHz

Part Number

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
NOR Flash	4MB	8MB	/	/	/	/	/
PSRAM	/	/	4MB	4MB	8MB	16MB	16MB
Wi-Fi	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)	Wi-Fi 6 (Dual Band)
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	RTL8721FAF	RTL8721FAM	RTL8721FCM	RTL8721FLM
GPIO	19	12	31	60
SPI	2	2	2	2
UART	5	5	5	5
I2C	2	2	2	2
LCD Controller	1	1	1	1
A2C	2	2	2	2
I2S	1	1	1	1
Digital microphone	2	2	2	2
ADC and Cap-touch	4	4	11	13
Infrared Transeiver	1	1	1	1
SWD Interface	1	1	1	1
General Timer	4	4	4	4
Capture Timer	1	1	1	1
RTC	1	1	1	1
LEDC_Pro	1	1	1	1
PWM	16	16	16	16
USB	1	1	1	1
Ethernet Interface	1	1	1	1
SDIO_HOST	1	1	1	1
SDIO_DEVICE	1	1	1	1
IWDG	1	1	1	1
System WDG	3	3	3	3
GDMA	8	8	8	8
Thermal	1	1	1	1

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	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine	/	/
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M					/		/
EFUSE Secure Storage
True Random Number Generator	/
HUK Derivation Mechanism	/
Authenticated Debug Access

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

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

Authenticated Debug Access

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
	Pin Multiplexing	Link
	Pin Assignment Tool	Link
	Hardware Design Guide	Link

Highlights

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

System Security

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

Dual-band Wi-Fi

Supporting the 5GHz band to effectively avoid common interference sources (Bluetooth, Zigbee, microwave devices) through spectrum isolation. Leveraging abundant non-overlapping channel resources to significantly reduce co-channel interference risks, delivering high-speed, low-interference stable transmission performance.

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

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

System Architecture

Real-M300

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

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

Part Number

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	40MHz	40MHz	40MHz	40MHz	40MHz	40MHz	40MHz	40MHz
On-chip SRAM	512KB	512KB	512KB	512KB	512KB	512KB	512KB	512KB
TrustZone
NOR Flash	/	/	/	4MB	4MB	/	/	/
PSRAM	/	/	4MB	/	/	4MB	4MB	4MB
Wi-Fi	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (Dual Band)
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	RTL8720DF-VA1	RTL8720DF-VT1	RTL8720DN-VA1	RTL8720DM-VA1	RTL8721DM-VA1	RTL8721DN-VRC	RTL8722DM-VA1	RTL8722DM-VP1
GPIO	20	20	19	19	32		52	52
SPI	3	3	2	2	3		3	3
UART	4	4	4	4	3		4	4
I2C	2	2	2	2	1		2	2
LCD Controller								1
I2S	1	1			1		1	1
Audio analog output							2	2
Digital microphone	2	2	2	2	2		2	2
Analog microphone							1
ADC and Cap-touch	3	3	3	3	7		7	7
Infrared Transeiver	1	1	1	1	1		1	1
Key-Scan	5 x 4	5 x 4	5 x 4	5 x 4	7 x 7		8 x 8	8 x 8
SWD Interface	1	1	1	1	1		1	1
PWM	13	13	8	8	11		17	19
USB	1	1	1	1	1		1	1
SDIO_HOST	1	1					1	1

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	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine	/	/
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M					/		/
EFUSE Secure Storage
True Random Number Generator	/
HUK Derivation Mechanism	/
Authenticated Debug Access

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

Authenticated Debug Access

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	191	µA
WoWLAN	DTIM=10	110	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

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
	Pin Multiplexing	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

Dual-band Wi-Fi

Supporting the 5GHz band to effectively avoid common interference sources (Bluetooth, Zigbee, microwave devices) through spectrum isolation. Leveraging abundant non-overlapping channel resources to significantly reduce co-channel interference risks, delivering high-speed, low-interference stable transmission performance.

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

Part Number

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
DDR	128MB (DDR2)	128MB (DDR2)	256MB (DDR3)
Wi-Fi	Wi-Fi 4 (Dual Band)	Wi-Fi 4 (2.4GHz)	Wi-Fi 4 (Dual Band)
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
GPIO	59
SPI	2
UART	4
I2C	2
PWM	12
ADC	8
GDMA	12
USB 2.0	1
SD Host Controller	1
Audio DAC	1
Audio ADC	1
Digital Microphone	2

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	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B	Comment
Symmetric Encryption Engine
Asymmetric Encryption Engine	/	/
Secure Boot
Flash OTF Decryption
Arm TrustZone®-M					/		/
EFUSE Secure Storage
True Random Number Generator	/
HUK Derivation Mechanism	/
Authenticated Debug Access

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

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

Authenticated Debug Access

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