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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
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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