Description
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 or Sparkfun breakout board to provide USB power and communication to the board.
Technical specs:
| 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 |
| UART | 1 |
| SPI | 1 |
| I2C | 1 |
| 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 * |
| SRAM | 2 KB * |
| EEPROM | 1 KB * |
| Clock Speed | 8 MHz (3.3V versions) or 16 MHz (5V versions) |
(*) Older boards were equipped with ATmega 168 with this specs:
– Flash memory: 16 KB
– SRAM: 1 KB
– EEPROM: 512 bytes
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