This board was developed for applications and installations where space is premium and projects are made as permanent set ups. Small, available in 3.3 V and 5 V versions, powered by ATmega328.
The Arduino Pro Mini is a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, an on-board resonator, a reset button, and holes for mounting pin headers. A six pin header can be connected to an FTDI cable.
Microcontroller: ATmega328 *
Board Power Supply: 3.35 -12 V (3.3V model) or 5 - 12 V (5V model)
Circuit Operating Voltage: 3.3V or 5V (depending on model)
Digital I/O Pins: 14
PWM Pins: 6
Analog Input Pins: 6
External Interrupts: 2
DC Current per I/O Pin: 40 mA
Flash Memory: 32KB of which 2 KB used by bootloader *