Pololu A-Star 32U4 Mini SV

The A-Star 32U4 Mini SV is a programmable module based on the ATmega32U4 from Microchip (formerly Atmel). Unlike competing products, it has an on-board switching step-down regulator that allows it to be powered efficiently from a 5 V to 40 V supply. This compact 4.8cm × 1.8cm board breaks out all 26 of the microcontroller?s I/O pins (of which 7 can be used as PWM outputs and 12 as analog inputs), and loading programs is made easier by a Micro-USB interface and a preloaded Arduino-compatible bootloader.

Specifications:

• Processor: ATmega32U4 @ 16 MHz
• RAM size: 2560 bytes
• Program memory size: 32 Kbytes
• Motor channels: 0
• User I/O lines: 26
• Input voltage range: 5V to 40V (SV)
• Minimum operating voltage: 5V
• Maximum operating voltage: 40V
• Maximum output current:800 mA
• Logic voltage: 5V
• Reverse voltage protection?: Y
• External programmer required?: N