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MICROCONTROLLERnRF52840 (datasheet)
OPERATING VOLTAGE3.3V
INPUT VOLTAGE (LIMIT)21V
DC CURRENT PER I/O PIN15 mA
CLOCK SPEED64MHz
CPU FLASH MEMORY1MB (nRF52840)
SRAM256KB (nRF52840)
EEPROMnone
DIGITAL INPUT / OUTPUT PINS14
PWM PINSall digital pins
UART1
SPI1
I2C1
ANALOG INPUT PINS8 (ADC 12 bit 200 ksamples)
ANALOG OUTPUT PINSOnly through PWM (no DAC)
EXTERNAL INTERRUPTSall digital pins
LED_BUILTIN13
USBNative in the nRF52840 Processor
IMULSM9DS1 (datasheet)
MICROPHONEMP34DT05 (datasheet)
GESTURE, LIGHT, PROXIMITYAPDS9960 (datasheet)
BAROMETRIC PRESSURELPS22HB (datasheet)
TEMPERATURE, HUMIDITYHTS221 (datasheet)
LENGTH45 mm
WIDTH18 mm
WEIGHT5 gr (with headers)