A-Star 32U4 Mini LV

Pololu item #: 3103 73 in stock
Brand: Pololu
Status: Active and Preferred 
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Price break Unit price (US$)
1 19.95
5 17.76
25 15.55
100 13.95


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The A-Star 32U4 Mini LV is a programmable module based on the ATmega32U4 from Microchip (formerly Atmel). Unlike competing products, it has an on-board switching step-up/step-down regulator that allows it to be powered efficiently from a 2.7 V to 11.8 V supply. This compact 1.9″ × 0.7″ 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.

Alternatives available with variations in these parameter(s): input voltage range Select variant…

 Description Specs (14) Pictures (9) Resources (30) FAQs (0) On the blog (10) 

Dimensions

Size: 0.7″ × 1.95″ × 0.23″1
Weight: 3.4 g2

General specifications

Processor: ATmega32U4 @ 16 MHz
RAM size: 2560 bytes
Program memory size: 32 Kbytes3
Motor channels: 0
User I/O lines: 26
Input voltage range: 2.7 V to 11.8 V (LV)
Minimum operating voltage: 2.7 V
Maximum operating voltage: 11.8 V
Maximum output current: 1.5 A4
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
Available current depends on input voltage, current consumed by the board, ambient conditions, and regulator topology. See product documentation and performance graphs for details.
5
On Bat+ (LV, SV) or Bat- (ULV).

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