BL702L/BL704L 
Bluetooth 5 (LE) and Zigbee3.0 Combo
Bluetooth 5 (LE) and Zigbee3.0 Combo
BL702L/704L is a highly integrated 802.15.4 (Zigbee/Thread/Matter) and BLE combo chipset for IoT applications, 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.
BL702L/BL704L has built-in RISC-V 32-bit single-core processor with FPU, the clock frequency can reach 128MHz, has 100KB RAM / 256KB ROM / 1Kb eFuse storage resources, supports external Flash, and optional embedded pSRAM. A variety of integrated peripherals and rich GPIO pins meet the functional requirements of various IoT products.
The BL702L/BL704L supports Zigbee 3.0, Thread , and BLE 5.3, support BLE/Zigbee/Thread/Three-line Wi-Fi coexistence.Helping to build powerful IoT devices and solutions based on Zigbee/Thread/BLE/Matter.
The BL702L/BL704 supports secure boot,image encryption,image signing and key protection via eFuse read-write protection.The powerful security mechanism ensures the secure connection of the device and the security of the application program interface.
The BL702L/BL704 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 BL702L/BL704 applications or port solutions to other platforms. BL702L'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.
The BL702L/BL704 supports multiple power management modes to adapt to different product scenarios, ultra-low power consumption ensures stable operation of devices for extended periods, achieving more efficient data transmission and processing.
| CPU | 32-bit RISC-V CPU |
|---|---|
| RAM | 100KB RAM, 256KB ROM, 1Kb eFuse and configurable embedded Flash and PSRAM |
| Cache | 16KB L1 Cache |
| Power Modes(Ultra-low Power modes) | Active (Normal/Rx/Tx) Idle mode Power Down Sleep Hibernate Off |
| Clock | Support XTAL (mainly 32MHz) Internal RC 32KHz oscillator Internal RC 32MHz oscillator Support XTAL (mainly 32KHz) Internal System DLL |
| Security function | Secure Boot Secure debug port QSPI Flash On-the-fly AES Decryption (OTFAD) - AES - 128 and CTR+ modes AES 128bit encryption engine SHA-1/256 True Random Number Generator (TRNG) Public Key Accelerator (PKA) |
| Peripherals | One SPI master/slave One UART One I2C, support host mode Five PWM channels Key-Scan interface 12-bit general ADC Audio ADC High precision ADC IR remote(TX) Up to 29 GPIOs (configurable functions) |
| Wireless protocol support | IEEE 802.15.4 MAC/PHY, Bluetooth 5.3 low energy, 2.4GHz RF transceiver, zigbee 3.0,Thread 1.3 support BLE/Zigbee/Thread/Three-line Wi-Fi coexistence |
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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