Features:

• The SparkFun Pro nRF52840 Mini is a breakout and development board for Nordic Semiconductor’s nRF52840 – a powerful combination of ARM Cortex-M4 CPU and 2.4GHz Bluetooth radio.

Specifications:

• ARM Cortex-M4 CPU with floating point unit (FPU)
– 1MB internal Flash — For all of your program, SoftDevice, and file-storage needs!
– 256kB internal RAM — For your stack and heap storage.
• Integrated 2.4GHz radio with support for:
– Bluetooth Low Energy (BLE) — With peripheral and/or central BLE device support
– Bluetooth 5 — Mesh Bluetooth!
– ANT — If you want to turn the device into a heart-rate or exercise monitor.
– Nordic’s proprietary RF protocol — If you want to communicate, securely, with other Nordic devices.
• Every I/O peripheral you could need
– USB — Turn your nRF52840 into a USB mass-storage device, use a CDC (USB serial) interface, and more. This is a big add compared to the nRF52832!
– UART — Serial interfaces with support for hardware flow-control if desired.
– I2C — Everyone’s favorite 2-wire bi-directional bus interface
– SPI — If you prefer the 3+-wire serial interface
– Analog-to-digital converters (ADC) — Eight pins on the nRF52840 Mini Breakout support analog inputs
– PWM — Timer support on any pin means PWM support for driving LEDs or servo motors.
– Real-time clock (RTC) — Keep close track of seconds and milliseconds, also supports timed deep-sleep features.
• Peripheral-multiplexing — (Nearly) any pin can support any of the above features.