Arduino Pro Mini 328 - 3.3V/8MHz
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. The Arduino Pro Mini is intended for semi-permanent installation in objects or exhibitions. The board comes without pre-mounted headers, allowing the use of various types of connectors or direct soldering of wires. The pin layout is compatible with the Arduino Mini. This one runs at 3.3V and 8 MHz.
Power Supply: 3.35 -12V
Circuit Operating Voltage: 3.3V
Digital I/O Pins:14
Analog Input Pins:6
Flash Memory: 32KB of which 2 KB used by bootloader
Clock Speed: 8 MHz