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A-Star 32U4 Micro

Pololu item #: 3101
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant


Price break Unit price (US$)
1 16.95
5 15.59
25 14.35
100 13.20


backorders allowed

The A-Star 32U4 Micro is a tiny programmable module featuring the ATmega32U4 AVR microcontroller. It packs a Micro-USB interface and 18 digital input/output pins (of which 6 are available to be used as PWM outputs and 8 as analog inputs) onto a board measuring only 1″ × 0.6″ and ships preloaded with an Arduino-compatible bootloader.

 Description Specs (14) Pictures (10) Resources (24) FAQs (0) On the blog (11) 

Dimensions

Size: 0.6″ × 1.05″ × 0.18″1
Weight: 1.3 g2

General specifications

Processor: ATmega32U4 @ 16 MHz
RAM size: 2560 bytes
Program memory size: 32 Kbytes3
Motor channels: 0
User I/O lines: 184
Minimum operating voltage: 5.5 V
Maximum operating voltage: 15 V
Logic voltage: 5 V
Reverse voltage protection?: Y5
External programmer required?: N

Identifying markings

PCB dev codes: ac01a
Other PCB markings: 0J8063

Notes:

1
Without included optional headers. This measurement includes the USB Micro-B connector, which extends 0.05″ past the edge of the PCB.
2
Without included optional headers.
3
Note that 4 KB of the MCU's 32 KB of flash memory is used by the pre-installed USB bootloader. All 32 KB is available when programming via the ISP header rather than the bootloader.
4
All 18 can be used as digital I/O and 8 can be used as analog inputs. 15 of the 18 are available along the sides for use in a breadboard; the remaining three are accessible through the ISP header.
5
On VIN.

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