Pro Mini ATMEGA328P 16 MHz 5V for Arduino

Where to Use Arduino Pro Mini

Cases where Pro Mini is chosen over other Arduinos :

Where system is permanent installation. In permanent applications, the board only needs to be programmed once and that is all. In those cases features provided like USB programmer, I/O connectors and other supporting hardware is useless. It is specifically designed for those systems. 

For convenience. It is one of smallest boards of Arduino. Hence has a comfort size to be used in mobile applications.

With basic hardware the cost of board is considerable lesser.

Has 32Kbytes memory hence accommodates most application programs.

• It has 14 digital input/output port RX and TX, D2 ~ D13
• Also has 8 analog input port A0 ~ A7
• 1 to the TTL level a serial port to send and receive port RX/TX
• 6 a PWM port, D3, D5, D6, D9, D10, D11
• It uses an Atmel Atmega328P – AU microcontroller
• In addition to that, it Supports serial download
• Also Supports external 3.3 V ~ 12 V dc power supply
• Support 9 v batteries
• 16MHz/8MHz clock frequency