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Overview

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The BK3435 chip is a highly integrated Bluetooth low energy single mode device certified with Bluetooth® Low Energy 5.0 (DID: D040065). It integrates a high-performance RF transceiver, baseband, MCU core, rich feature peripheral units, programmable protocol and profile to support Bluetooth® Low Energy application. The Flash program memory makes it suitable for customized applications.

Features

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 Bluetooth LE with 1 Mbps and 2 Mbps rate and extended data length

 Enhanced privacy with Bluetooth LE 5.0 secure connection

 Supports Bluetooth LE master and slave links at the same time

 Low-power 2.4 GHz transceiver

 32-bit RISC core integrated

 500 KB programmable Flash for program and 64 KB RAM for data

 Operating voltage from 0.9 V to 3.6 V

 Clock

    16 MHz crystal reference clock with internal tuning load capacitance

    64 MHz digital PLL clock

    32 kHz ring oscillator

    External 32 kHz crystal oscillator

    MCU can run with any clock source with internal frequency dividers

    Dedicated audio PLL clock for I2S master clock

 Interface and peripheral units

    Quad IO FLASH programming

    JTAG interface, I2C interface, and SPI interface

    Two UART interfaces

    Multi-channel PWM output

    USB host and device interface

    IrDA receiver and transmitter amplifier

    On-chip high-accuracy temperature sensor

    On-chip 10-bit general ADC

    On-chip audio gain amplifier and 16-bit microphone ADC

    GPIOs with multiplexed interface functions

    True random number generator

    I2S/PCM digital audio interface with master and slave mode

 Typical package type

    32-pin QFN4x4, 40-pin QFN5x5, and 48-pin QFN6x6