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A-Star 32U4 Prime LV microSD with LCD
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 V to 16 V (though it requires at least 3 V at start-up). This configuration of the A-Star 32U4 Prime LV includes microSD support, preinstalled female headers common to many Arduinos, and a removable 8×2 character LCD.
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Description | Specs (17) | Pictures (11) | Resources (25) | FAQs (0) | On the blog (1) | Distributors (0) |
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Dimensions
Size: | 2.8″ × 2.1″ (common Arduino form factor) |
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Weight: | 33 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 V to 16 V (LV) |
Minimum operating voltage: | 2 V2 |
Maximum operating voltage: | 16 V |
Maximum output current: | 1.8 A3 |
Logic voltage: | 5 V |
Reverse voltage protection?: | Y |
External programmer required?: | N |
Version: | includes an 8×2 character LCD, microSD support, and preinstalled female headers |
Identifying markings
PCB dev codes: | ac03e |
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Other PCB markings: | 0J11918 |
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
- Note: the minimum startup voltage is 3 V, but the regulator can operate down to 2 V after startup.
- 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.