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A-Star 32U4 Prime LV microSD (ac03b)

Pololu item #: 3108
Brand: Pololu
Status: Discontinued 
RoHS 3 compliant

This product has been discontinued.

This original version (ac03b) of the A-Star 32U4 Prime LV has been replaced by a newer version (ac03e) with an improved 5V regulator that can deliver more current and has a wider 2 V to 16 V operating range.

Clearance: This product is being replaced by a newer ac03e version with an improved 5 V regulator that operates from 2 V to 16 V and can deliver more current.

The A-Star 32U4 Prime LV is a programmable board based on the ATmega32U4 AVR microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 2.7 V to 11.8 V. This configuration of the A-Star 32U4 Prime LV includes microSD support and preinstalled female headers common to many Arduinos.

Alternatives available with variations in these parameter(s): version Select variant…

 Description Specs (17) Pictures (9) Resources (24) FAQs (0) On the blog (3) 

Dimensions

Size: 2.8″ × 2.1″ (common Arduino form factor)
Weight: 20 g

General specifications

Processor: ATmega32U4 @ 16 MHz
RAM size: 2560 bytes
Program memory size: 32 Kbytes1
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 A2
Logic voltage: 5 V
Reverse voltage protection?: Y
External programmer required?: N
Version: includes microSD support and preinstalled female headers

Identifying markings

PCB dev codes: ac03b
Other PCB markings: 0J8603

Notes:

1
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.
2
Available current depends on input voltage, current consumed by the board, ambient conditions, and regulator topology. See product documentation and performance graphs for details.

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