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  • 32-bit ARM® Cortex™-M0

  • 2MB QSPI flash, 1MB of which is available for   persistent application data

  • Dialog Semiconductor DA14681-01, Cortex-M0 at   up to 96MHz, with hardware encryption engine.

  • Input/output    Two I2C interfaces (master/slave, 100 & 400kHz)    
    SPI master (MOSI, MISO, SCLK), Two UARTs    
    Up to 15 GPIOs, 6 ADC channels and 4 PWM   depending on configuration

  • Power supply    
    1.7V to 4.75V    
    6.5uA in sleep (32kHz clock active)    
    70uJ per advertisement


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