BL702/BL706 
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BL702 is an IoT chip with low power consumption and high performance that supports BLE/Zigbee wireless networking, built-in single core RISC-V 32-bit CPU, supports multiple security mechanisms. The chip provides rich cache and memory resources, gathers a variety of peripherals, and provides industry-leading single chip multi-purpose solutions for IoT products, which is applicable to a wide range of IoT application scenarios.
The BL702 has a built-in RISC-V 32-bit single core processor with FPU. The clock frequency can reach 144MHz. The BL702 has 132KB RAM/192KB ROM/1Kb eFuse storage resources, supports external Flash, and can optionally be equipped with embedded pSRAM. The integrated multiple peripherals, camera interfaces and rich GPIO pins meet the functional requirements of various Internet of Things products.
The BL702 supports Zigbee 3.0, Thread 1.3, and BLE 5.0, helping to build powerful IoT devices and solutions based on Zigbee/Thread/BLE/Matter.
The BL702 supports QSPI Flash Instant AES Decryption (OTFAD) - AES - 128 and CTR+modes; Support AES 128/192/256 bit encryption engine; Support MD5, SHA-1/224/256/384/512; Provide public key accelerator (PKA). The powerful security mechanism ensures the safe connection of equipment and the security of application program interface.
BL702 uses the Internet of Things development framework BL_ IOT_ SDK。 BL_ IOT_ SDK has undergone strict application tests and has been successfully applied to tens of millions of Internet of Things devices. Developers, based on their mature and clear software architecture, perfect APIs and easy-to-use tools, will make it easier to build BL702 applications or migrate solutions from other platforms. The BL702's wireless connection SDK and peripheral SDK have built a wealth of Internet of Things connection, communication and control functions, enabling more intelligent Internet applications.
| CPU | 32 位 RISC-V CPU |
|---|---|
| Memory | 132KB RAM, 192KB ROM, 1Kb eFuse and configurable embedded Flash memory and PSRAM |
| Cache | 16KB L1 Cache |
| performance | 1.46 DMIPS / MHz |
| efficiency | 3.1 CoreMark / MHz |
| Safety function | ■安全启动 ■安全调试端口 ■QSPI Flash 即时 AES 解密（OTFAD）- AES - 128和 CTR+ 模式 ■AES 128/192/256 位加密引擎 ■SHA-1/224/256 ■支持 MD5,SHA-1/224/256/384/512 ■真实随机数发生器 (TRNG) ■公钥加速器 (PKA) ■ Safe start-up ■ Security debugging port ■ QSPI Flash Instant AES Decryption (OTFAD) - AES - 128 and CTR+modes ■ AES 128/192/256 bit encryption engine ■SHA-1/224/256 ■ Support MD5, SHA-1/224/256/384/512 ■ Real random number generator (TRNG) ■ Public Key Accelerator (PKA) |
| Security Hardware | TrustZone |
| Wireless protocol support | IEEE 802.15.4 MAC/PHY, low-power Bluetooth 5.0, 2.4GHz RF transceiver, zigbee 3.0, Thread 1.3 |
| Wireless data rate | |
| TX power | 0-14 dBm |
| RX sensitivity | -104~- 98 dBm at 125Kbps; -100~- 97 dBm at 500Kbps; -97~- 94 dBm at 1Mbps; -94~- 92 dBm at 2Mbps; |
| RF power consumption under 3v DC/DC | RX：3.5 mA MAX TX: 45 mA |
The BL702-IoT-DVK is a small development board based on the BL702 module, which can be used to evaluate the performance of Zigbee/Thread/BLE.
BL702-IoT-DVK leads out most of the GPIO ports, which is convenient for users to connect other peripherals and can easily realize product development. In addition, the backplane includes a JTAG interface, which is convenient for users to debug programs.
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Interface BL706-AVB was born for audio and video applications, suitable for smart home, smart speakers, voice story machines and other equipment, to meet the development of various audio and video and AIOT applications.
The BL706-AVB baseboard includes Camera interface, I2S interface and SPI interface, etc. It can be connected to DVP Sensor, Audio Codec, SPI LCD and other devices to meet the user's audio and video development needs.
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Interface The BL706-IoT-DVK is a small development board based on the BL706 module, which can be used to evaluate the performance of BLE and zigbee.
BL706-IoT-DVK leads out most of the GPIO ports, which is convenient for users to connect other peripherals and can easily realize product development. In addition, the backplane includes a JTAG interface, which is convenient for users to debug programs.
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Interface The BL-HWC-G1 development board consists of two core systems: BL602 hardware system and BL706 hardware system. BL602 is a Wi-Fi+BLE Combo chip, and BL706 is a BLE5.0 + Zigbee3.0 Combo chip.
The SDIO interface in the BL604E-IoT-DVK is led out by means of golden fingers, which is convenient to connect with other platforms.
Four types of female sockets are preset to adapt to common standard sensor modules on the market. The functions that can be realized through software configuration are as follows: (1) USB-to-UART bridge chip, which can be used for chip programming and system debugging; (2) Reset button and boot mode control button; (3) Support automatic download function; (4) Support peripheral sensors such as I2C, SPI, UART and PWM; (5) Support WiFi/BLE/Zigbee through simple hardware modification Gateway development (6) Support JTAG+GDB debugging function
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Interface BL_IOT_SDK has undergone rigorous application test and has been successfully applied to tens of millions of IoT devices. Based on its mature and clear software architecture, complete API and easy-to-use tools, developers will be easier to build wireless interconnection applications of chips. Using BL_IOT_SDK can help you quickly develop related applications focusing on wireless interconnection, obtain compact code, save development time, and speed up product launch.
BL_MCU_SDK is rich in content and complete in functions. It has undergone rigorous application testing and has been successfully applied to tens of millions of IoT devices. Based on its mature and clear software architecture, complete API and easy-to-use tools, developers will be easier to build chip applications or port solutions to other platforms. The porting and application work of RTOS / LVGL / TFLite in the SDK also helps developers develop in-depth AIoT applications.
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