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PRODUCT OVERVIEW

BL702/BL704/BL706 is highly integrated BLE and Zigbee combo chipset for IoT applications.

Wireless subsystem contains 2.4G radio, BLE+Zigbee baseband and MAC designs. Microcontroller subsystem contains 32-bit RISC CPU, high-speed cache and memories. Power Management Unit controls ultra-low-power modes. Moreover, variety of security features are supported.

Peripheral interfaces include USB2.0, Ethernet, IR-remote, SPI, UART, ISO 17987, I2C, I2S, PWM, QDEC, KeyScan, ADC, DAC, ACOMP, PIR, Camera interface, etc.

Flexible GPIO configurations are supported. BL702 has 15 GPIOs, BL704 has 23 GPIOs, and BL706 has 31 GPIOs.

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FEATURES​

Wireless (Tier-1 RF Performance)

  • Bluetooth® Specification v5.0

  • Bluetooth® Low Energy 1 and 2Mbps

  • Bluetooth® Long Range 500/125Kbps

  • Zigbee 3.0 / IEEE 802.15.4

  • Support Wi-Fi/Bluetooth/Zigbee coexistence

  • 2.4 GHz RF transceiver

  • Integrated RF balun, PA/LNA

 

Microcontroller

  • 32-bit RISC CPU with FPU

  • L1 cache

  • RTC timer up to One year

  • 64b and 32b general purpose timers

  • Eight DMA channels

  • Dynamic-Frequency from 1MHz to 144MHz

  • JTAG development support

  • XIP QSPI Flash support

  • XIP QSPI pSRAM support

 

Memory

  • 132KB RAM

  • 192KB ROM

  • 1Kb eFuse

  • Embedded Flash (Optional)

  • Embedded pSRAM (Optional)

 

Security (Complete Security features)

  • Secure boot ; Secure debug

  • XIP QSPI On-The-Fly AES Decryption (OTFAD)

  • AES 128/192/256

  • MD5, SHA-1/224/256

  • TRNG (True Random Number Generator)

  • PKA (Public Key Accelerator)

Peripherals

  • USB2.0 FS device interface

  • Ethernet RMII interface

  • IR remote control interface

  • SPI master/slave

  • Two UART (Support ISO 17987)

  • I2C master

  • I2S master/slave

  • Five PWM channels

  • Quadrature decoder

  • Key-Scan interface

  • 12-bit general ADC

  • 10-bit general DAC

  • PIR (Passive Infra-Red) detection

  • Camera interface

  • 15 (BL702) or 23 (BL704) or 31 (BL706) GPIOs

 

Power (Ultra-low Power modes)

  • Off

  • Hibernate

  • Power Down Sleep (flexible)

  • Active

 

Clock

  • Support XTAL 32MHz

  • Support XTAL 32/32.768KHz

  • Internal RC 32KHz & 32MHz oscillator

  • Internal System PLL & Audio PLL

 

Package Type

  • QFN32 (BL702)

  • QFN40 (BL704)

  • QFN48 (BL706)

TARGET APPLICATIONS​

  • Low-power IoT applications

  • BLE connection

  • Zigbee connection

  • Home electronics

  • Remote control

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