Pro Micro NRF52840 Development Board Compatible With nice!nano V2.0

The Pro Micro NRF52840 Development Board Compatible With nice!nano V2.0 is a micro development board that serves as a Pro Micro alternative, compatible with Nice!Nano and featuring the same pin layout for use with ProMicro keyboards. It includes a lithium battery charging circuit (100mA/hour) and a power-saving software-controlled switch, reducing standby current to 1mA. Powered by the nRF52840 SoC with a 64MHz ARM Cortex-M4F processor, it offers 1MB flash, 256KB RAM, and supports Bluetooth 5.0, Thread, Zigbee, ANT, and 2.4GHz. It also features various peripherals (ADC, PWM, SPI, I2C, UART, USB, GPIO) and security features like AES encryption and SHA-256.

Features:

1. Adopt NRF52840 chip, ARMCortex-M4F processor, main frequency 64MHz;
2. Built-in 1MB flash memory and 256KB RAM;
3. Onboard antenna, supports multiple wireless protocols such as Bluetooth 5, Thread, Zigbee, ANT and 2.4GHz;
4. LTH7RBattery charging IC supports charging and discharging of lithium batteries;
5. Power consumption is only 20uA when in standby mode;
6. Multiple peripheral interfaces such as ADC, PWM, SPI, I2C, UART, USB and GPIO, etc.;
7. Supports multiple security protocols including AES encryption, SHA-256 hash algorithm and true random number generator (TRNG)

Package Includes:

1 x Pro Micro Dev Board
2 x 13 Pin Headers

Note: The default factory built-in program is Blink-All-IO (all IO ports automatically flip in 1S). If you want to enter the Nice! Nano V2 Bootloader, please short RST to GND twice within 0.5S. The keyboard board can be directly pressed twice within 0.5S.