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Chip introduction

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.

  • Built-in RISC-V processor

    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.

  • Leading RF Performance

    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.

  • Strong security mechanism

    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.

  • Rich software support

    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.

Chip application scenarios
  • Whole house home
    Smart lighting: light strips, ceiling lights, stepless lights
    Smart home appliances: sockets, curtains
    Intelligent security: door lock, door sensor
    Smart sensors: smoke, water immersion, carbon monoxide, door sensor
    Smart wear
Basic parameters
CPU 32nd 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
Development board

BL702-IoT-DVK

The BL702 IoT development board is the smallest system board of the BL702. The development board basically leads out the available pins of the BL702, and also leads out the JTAG debug pins, which can be used to quickly evaluate the development process and basic performance of the BL702 chip.
详细介绍
  • Quick evaluation of BLE & zigbee

    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.

  • Flexible and rich I/O interface

    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

The BL706 AVB development board is a development board dedicated to evaluating the performance of the BL706 Camera and I2S. The development board has a DVP sensor interface that can be used to connect the camera sensor; the MJPEG module of the BL706 can easily test the image processing performance of the BL706; BL706 AVB development The board also brings out the I2S function, and the audio processing capability of the BL706 can be easily evaluated with the Audio codec; in addition, the development board also has a set of SPI screen interfaces, which can be used to connect the SPI screen to test the display driving capability of the BL706.
详细介绍
  • Wide range of applications

    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.

  • Flexible and rich I/O interface

    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

BL706-IoT-DVK

The BL706-IoT-DVK development board is mainly used to evaluate BLE and ZigBee of the BL706. The circuit board is small and concise, consisting of the smallest system module and a backplane with a USB-to-serial port. Most of the GPIOs are drawn out on the backplane to facilitate users to connect other external The bottom plate also includes a JTAG interface, which is convenient for users to debug the program.
详细介绍
  • Quick evaluation of BLE & zigbee

    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.

  • Flexible and rich I/O interface

    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
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 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.

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BL_MCU_SDK

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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