Realtek RTL8726E
SoCs
Ameba IoT wireless solutions, featuring high integration, stable performance, low power consumption, and enhanced security
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 is architecturally optimized for AI computing, voice wake-up, and noise reduction applications, and its multi-channel MAC computing capability ensures faster data processing. With independent application core and network core, the three-core collaboration ensures stable, low-latency voice applications.
Integrating various security features including Arm TrustZone®, TRNG, asymmetric encryption, HUK, OTP storage, Flash XIP decryption, etc., it provides security protection for customer's products.
Incorporating advanced technologies such as OFDMA, MU-MIMO, TWT and Extended Range, it effectively alleviates wireless resource congestion, enhances weak signal coverage, significantly improves transmission quality, reduces latency, and extends the battery life of IoT devices
Built-in audio codec supports audio input and output, reducing dependency on external components and adaptation costs, facilitating voice interaction and audio playback.
Classic Bluetooth and Bluetooth Low Energy concurrent, fully compatible with Classic Bluetooth 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
- 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
- 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
- RISC-V RV32IMAFC Architecture
- 400MHz Single-Issue In-Order Pipeline
- 16KB I-Cache
- 16KB D-Cache
- Open-source ISA architecture, supports custom extensions
- 512KB SRAM
- QSPI NOR Flash: Up to 100MHz
- DQ8 DDR PSRAM: Up to 250MHz
Part Number
| Package number | RTL8726EAM-VA4-CG |
|---|---|
| DSP | 500MHz |
| Real-M300 | 400MHz |
| KR4 | 400MHz |
| On-chip SRAM | 512KB |
| Arm 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 | Filter | RTL8721Dx | RTL8720E | RTL8710E | RTL8726E | RTL8713E | RTL8730E | RTL8721F | RTL872xD | RTL8735B |
|---|---|---|---|---|---|---|---|---|---|---|
| AES Hardware Engine | ||||||||||
| SHA Hardware Engine | ||||||||||
| ECDSA/ECDH Hardware Engine | ||||||||||
| EDDSA Hardware Engine | ||||||||||
| RSA Hardware Engine | ||||||||||
| Secure Boot | ||||||||||
| Flash OTF Decryption | ||||||||||
| Arm TrustZone | ||||||||||
| OTP Secure Storage | ||||||||||
| True Random Number Generator | ||||||||||
| HUK Derivation Mechanism | ||||||||||
| Authenticated Debug Access |
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
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
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
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
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
Generates high-security random numbers based on physical entropy sources. Certified by NIST for randomness. Provides unpredictability to the system, resistant to prediction attacks
Hardware Unique Key (HUK) with physical isolation protection, unreadable and unclonable, used for secure derivation of application keys
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. 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 Feature List
| Features | Filter | RTL8721Dx | RTL8720E | RTL8710E | RTL8726E | RTL8713E | RTL8730E | RTL8721F | RTL872xD | RTL8735B |
|---|---|---|---|---|---|---|---|---|---|---|
| Frequency | 2.4GHz/5GHz | 2.4GHz | 2.4GHz | 2.4GHz | 2.4GHz | 2.4GHz/5GHz | 2.4GHz/5GHz | 2.4GHz/5GHz | 2.4GHz/5GHz | |
| Bandwidth | 40MHz | 20MHz | 20MHz | 20MHz | 20MHz | 20MHz | 20MHz | 40MHz | 20MHz | |
| Maximum PHY rate | 150Mbps | 114.7Mbps | 114.7Mbps | 114.7Mbps | 114.7Mbps | 114.7Mbps | 114.7Mbps | 150Mbps | 72Mbps | |
| 802.11a | ||||||||||
| 802.11ax (Wi-Fi6) | ||||||||||
| 802.11b/g/n | ||||||||||
| 802.11e/i/w/d/k/v/r | ||||||||||
| WMM/WPA1~3/WPS/ 802.1X/EAP |
||||||||||
| UL LDPC | ||||||||||
| DL STBC | ||||||||||
| Auto Antenna Diversity | ||||||||||
| CSI | ||||||||||
| MCC | ||||||||||
| R-MESH | ||||||||||
| Wi-Fi Card Mode | ||||||||||
| P2P/NAN | ||||||||||
| TWT |
Bluetooth Feature List
| Features | Filter | RTL8721Dx | RTL8720E | RTL8710E | RTL8726E | RTL8713E | RTL8730E | RTL8721F | RTL872xD | RTL8735B |
|---|---|---|---|---|---|---|---|---|---|---|
| Bluetooth Mode | Bluetooth LE | Bluetooth LE | Bluetooth LE | Bluetooth Dual Mode | Bluetooth Dual Mode | Bluetooth Dual Mode | Bluetooth LE | Bluetooth LE | Bluetooth LE | |
| Bluetooth BR/EDR | ||||||||||
| LE Audio | ||||||||||
|
Dedicated antenna for Bluetooth |
||||||||||
| Scatternet | ||||||||||
| LE 2Mpbs PHY | ||||||||||
| LE Long Range | ||||||||||
|
LE Advertising Extensions |
||||||||||
| Periodic Advertising | ||||||||||
| Periodic Advertising Sync Transfer |
||||||||||
|
Direction Finding (AoA/AoD) |
||||||||||
|
LE Isochronous Channels (CIS/BIS) |
||||||||||
| LE Power Control | ||||||||||
| SIG Mesh | ||||||||||
| High-Power Mode | TBD |
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 |
Note:
- Test conditions: 3.3V, 25°C
- WoWLAN: System average power consumption
Application Scenarios
Ameba IC adopts a multi-core architecture with collaborative work of an application processor, a network processor and a high-performance DSP. The dedicated DSP handles full-chain voice algorithms such as AEC, BF, and NS, achieving 360° accurate voice pickup and pure noise reduction. It supports highly customizable local voice interaction, including custom wake words, custom command words, and offline command recognition. Combined with VAD for precise voice detection, it enhances response speed and recognition accuracy while ensuring user privacy. Meanwhile, the integrated Wi-Fi and Bluetooth capabilities ensure connectivity to cloud-based large language models with low latency and high-throughput communication. By fusing local efficiency with cloud intelligence, it delivers a responsive, natural voice interaction experience.
Ameba IC leverages native high-performance audio and media processing framework, which fully covers all requirements from underlying audio drivers to upper-layer media playback, aiming to provide a one-stop solution for various smart audio devices. It supports multi-channel concurrent audio processing and intelligent audio policy routing, enabling seamless audio switching between speakers, headphones and Bluetooth devices. Compatible with multi-format audio decoding and mainstream streaming media protocols, it ensures a high-definition and lossless playback experience. With rich peripheral support and simple development interfaces, it greatly reduces product development complexity, efficiently empowering smart audio devices such as smart speakers, wireless earphones and AR/VR devices, and delivering a stable and immersive audio experience for users.
Ameba IC features a built-in HiFi5 DSP, specialized in high-definition audio decoding and AI noise reduction algorithms to ensure pure sound quality. Its dual-mode Bluetooth is compatible with A2DP/HFP protocols, enabling seamless switching between music playback and calls. Multiple digital microphones combined with VAD functionality accurately respond to voice commands, and multi-core collaboration achieves low-latency interaction. The integrated Audio Codec and DAC simplifies audio circuit design. Equipped with an Arm® security architecture and hardware encryption engine, it provides reliable protection for device firmware and user data, helping build high-end Bluetooth speakers with outstanding sound quality and intelligent interaction.
Ameba IC relies on Wi-Fi and BLE dual-mode capabilities to build a smart home network hub, enabling cross-protocol interconnection of Bluetooth and Wi-Fi devices. It supports multi-node BLE Mesh networking and ensures encrypted transmission of device control commands and private data based on the Arm security architecture and PSA certification. Its ultra-low power consumption feature is suitable for 24-hour standby requirements, and the rich peripherals can directly drive sensors and lighting modules, supporting voice control, scenario linkage and remote management to create an efficient and convenient whole-house smart ecosystem.
Ameba IC is equipped with built-in multi-channel high-precision ADCs, which can accurately collect core data such as voltage, current and battery cell temperature. Combined with Wi-Fi 6 and Bluetooth dual-mode communication, it enables real-time monitoring and remote regulation of energy storage device status. Integrated with an Arm® security architecture and hardware encryption engine, the IC ensures encrypted storage and transmission of energy storage data and supports full-life-cycle traceability of batteries. Its industrial-grade wide-temperature design adapts to complex outdoor energy storage conditions, while ultra-low power consumption enables long-lasting standby, and rich peripherals can directly drive display and alarm modules, making it an ideal core for building the next generation of intelligent, secure and efficient energy storage devices.
Ameba IC integrates three core capabilities: local scenario control, multi-modal human-machine interaction, and wired-wireless convergence, enabling intelligent upgrades for wall-mounted switches. It supports multi-channel PWM dimming interfaces, a touch-sensing engine, a programmable LED controller, and industrial-grade expansion interfaces, allowing precise driving of various execution units and enabling human-machine interaction. The chip integrates Wi-Fi and Bluetooth for multi-mode networking, and its hardware infrared engine supports mainstream protocols. With chip-level power management, it maintains wireless connectivity in standby mode with ultra-low power consumption, meeting the demands of high-reliability, low-latency wall-mounted control scenarios.
Ameba IC leverages BLE and dual-band Wi-Fi dual-mode capabilities to enable protocol conversion and relay transmission between Bluetooth terminal data and the cloud. With BLE long-range communication features, combined with high transmit power and excellent receive sensitivity, it supports multi-node BLE Mesh networking and is compatible with multi-master/slave scatternet architecture. This effectively expands the gateway coverage, facilitates Bluetooth device access in scenarios such as smart homes and buildings, and achieves efficient interconnection of large-scale nodes. Meanwhile, the PSA Level 2 security mechanism ensures data transmission privacy.
Ameba IC leverages a multi-core heterogeneous architecture and rich peripherals to efficiently execute inversion control algorithms and precisely drive multiple PWM channels, ensuring high-efficiency power conversion and reducing energy loss. Equipped with built-in multi-channel high-precision ADCs, it accurately collects photovoltaic voltage, current and inversion status data, enabling real-time monitoring of power generation status via Wi-Fi and Bluetooth dual-mode communication. Integrated with an Arm® security architecture and hardware encryption engine, it safeguards system security at the underlying level. With its industrial-grade wide-temperature design, it helps build an efficient, secure and long-lasting solution for micro inverters.
