DEV-11114: Arduino Pro Mini 328 3.3V/8MHz

Summary

It's blue! It's thin! It's the Arduino Pro Mini! SparkFun's minimal design approach to Arduino. This is a 3.3V Arduino running the 8MHz bootloader. Arduino Pro Mini does not come with connectors populated so that you can solder in any connector or wire with any orientation you need. We recommend first time Arduino users start with the Uno R3. It's a great board that will get you up and running quickly. The Arduino Pro series is meant for users that understand the limitations of system voltage (3.3V), lack of connectors, and USB off board.

We really wanted to minimize the cost of an Arduino. In order to accomplish this we used all SMD components, made it two layer, etc. This board connects directly to the FTDI Basic Breakout board and supports auto-reset. The Arduino Pro Mini also works with the FTDI cable but the FTDI cable does not bring out the DTR pin so the auto-reset feature will not work. There is a voltage regulator on board so it can accept voltage up to 12VDC. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.

The latest and greatest version of this board breaks out the ADC6 and ADC7 pins as well as adds footprints for optional I2C pull-up resistors! We also took the opportunity to slap it with the OSHW logo.

Specifications

Manufacturer	SparkFun Electronics
Category	Open Source MCU Platforms
Eval Board Part Number	1568-1054-ND
Eval Board Supplier	SparkFun Electronics
IDE	Arduino Arduino IDE, with Software Add-on
Speed	8 MHz
Bits	8 Bit
Memory, Flash/RAM	32 kB / 2 kB
Digital I/O	22 I/O, 6 PWM
Interface	I²C x1 SPI x1 UART x1
Analog Outputs (DACs)	0
Analog Inputs (ADCs)	8 x 10 Bit
DMA Channels	0
Features	Over Current Protection
Radio	-
Interrupt Pins	2
I/O Voltage	3.3 V
Voltage In	3.3 ~ 16 V
Touch Sensing Pins	0
Program/Debug Interface	USB to Serial
Area	587² mm, 0.91² In
Main I.C. Base Part	ATmega328P
Design Author	SparkFun Electronics
Date Created By Author	2014-04
Date Added To Library	2019-08