BL702/BL706 
Bluetooth 5 (LE) and Zigbee3.0 Combo
Bluetooth 5 (LE) and Zigbee3.0 Combo
BL702 is a low-power, high-performance IoT chip 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, integrates a variety of peripherals, and provides an industry-leading single-chip multi-purpose solution for IoT products, which is suitable for a wide range of IoT application scenarios.
BL702 has built-in RISC-V 32-bit single-core processor with FPU, the clock frequency can reach 144MHz, has 132KB RAM / 192KB ROM / 1Kb eFuse storage resources, supports external Flash, and optional embedded pSRAM. A variety of integrated peripherals, camera interfaces and rich GPIO pins meet the functional requirements of various IoT products.
BL702 supports long-distance Bluetooth 5 (LE), supports Zigbee two wireless connection schemes, supports Zigbee 3.0 basic device behavior, Core Stack R21, meets green energy standards, helps to build BLE/Zigbee-based, more powerful applications IoT devices and solutions.
BL702 supports QSPI Flash on-the-fly AES decryption (OTFAD) - AES - 128 and CTR+ modes; supports AES 128/192/256 bit encryption engine; supports MD5, SHA-1/224/256/384/512; provides public key accelerator (PKA ). The powerful security mechanism ensures the secure connection of the device and the security of the application program interface.
BL702 uses the IoT development framework BL_IOT_SDK. BL_IOT_SDK 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 BL702 applications or port solutions to other platforms. BL702's wireless connection SDK and peripheral SDK have built a wealth of IoT connection, communication and control functions, which can realize more intelligent interconnection applications.
| CPU | 32-bit RISC-V CPU |
|---|---|
| RAM | 132KB RAM, 192KB ROM, 1Kb eFuse and configurable embedded Flash and PSRAM |
| Cache | 16KB L1 Cache |
| Performance | 1.46 DMIPS / MHz |
| Efficiency | 3.1 CoreMark / MHz |
| Security function | ■Secure Boot ■Secure debug port ■QSPI Flash On-the-fly 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 ■True Random Number Generator (TRNG) ■Public Key Accelerator (PKA) |
| Security hardware | TrustZone |
| Wireless protocol support | IEEE 802.15.4 MAC/PHY, Bluetooth 5.0 low energy, 2.4GHz RF transceiver, zigbee 3.0 |
| 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 at 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 BLE and zigbee.
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.
Front 
Back 
Right oblique 
Left diagonal 
Module 
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.
Front 
Back 
Right oblique 
Left diagonal 
Module 
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.
Front 
Back 
Right oblique 
Left diagonal 
Module 
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
Front 
Back 
Right oblique 
Left diagonal 
Module 
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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