Arduino UNO mini is a 27 x 34 mm microcontroller board with an ATmega328P microcontroller.
This board has
• 14 digital I/O - interfaces (6 of them can be used as PWM output)
• 6 analog inputs
• 16 MHz - crystal oscillator
• USB-C connector
• reset
Technical data
bulletpoint# ATMega 328P
• Operating voltage: 5 V
• Input voltage: 7 ... 12 V
• input voltage ( limit ): 6 ... 20 V
• digital inputs/outputs: 14
• analog inputs: 6
• I DC 40 mA (I/O) / 50 mA (3.3 V)
• flash memory: 32 KByte
bulletpoint# SRAM : 2 KByte
bulletpoint# EEPROM: 1 KByte
• Clock: 16 MHz
Software can be found at
https://www.arduino.cc/en/Main/Software