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A-Star 32U4 Prime SV microSD
The A-Star 32U4 Prime SV 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 5 V to 36 V. This configuration of the A-Star 32U4 Prime SV includes microSD support and preinstalled female headers common to many Arduinos.
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| Description | Specs (17) | Pictures (10) | Resources (24) | On the blog (2) | 哔咔漫画 (2) |
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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: | 5 V to 36 V (SV) |
| Minimum operating voltage: | 5 V2 |
| Maximum operating voltage: | 36 V |
| Maximum output current: | 1.0 A3 |
| 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: | ac03c |
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| Other PCB markings: | 0J8661 |
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
- For light loads. The regulator's dropout voltage increases approximately linearly with the load, from a few millivolts at no load up to around 0.9 V at 1 A.
- 3
- 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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