A-Star 32U4 Micro

Pololu item #: 3101 814 in stock

Price break Unit price (US$)
1 12.75
5 11.25
25 9.95
100 8.95


backorders allowed

The A-Star 32U4 Micro is a tiny programmable module featuring Atmel’s ATmega32U4 microcontroller. It packs a Micro-USB interface and 18 digital input/output pins (of which 7 can 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 (12) Pictures (10) Resources (24) FAQs (0) On the blog (10) 

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: 154
Minimum operating voltage: 5.5 V
Maximum operating voltage: 15 V
Logic voltage: 5 V
Reverse voltage protection?: Y5
External programmer required?: N

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 15 can be used as digital I/O and 8 can be used as analog inputs. An extra 3 digital I/O lines are accessible through the ISP header.
5
On VIN.

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