USB Developer Board SS Micro ATmega32U4
Product information:
A developer board with an ATmega32U4 that you can easily plug into a USB port. In fact, this is a mini version of the Arduino Leonardo.
Can be programmed with the Arduino IDE (choose Arduino Leonardo).
With separately supplied header pins.
View the following link to use all pins and the onboard LEDs: https://forum.arduino.cc/index.php?topic=241369.0
Master: ATmega32u4
Operating voltage: 5V
Digital IO Number: 14
PWM output number: 5
Number of analog input: 6
Other peripherals: USB, UART, I2C, SPI, 3.3 V Power supply output
IO driving force: 40mA
Flash: 32KB (ATmega32U4) where 4KB occupied by Arduino bootloader
SRAM: 2.5 KB (ATmega32U4)
EEPROM: 1KB (ATmega32U4)
Frequency: 16MHz