A-Star 32U4 Prime LV microSD (ac03b)
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.
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| Description | Specs (17) | Pictures (9) | Resources (24) | FAQs (0) | On the blog (3) |
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Dimensions
| Size: | 2.8″ × 2.1″ (common Arduino form factor) |
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| Weight: | 20 g |
General specifications
| Processor: | ATmega32U4 @ 16 MHz |
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| 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 |
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| 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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