A-Star 32U4 Mini SV (ac02c)
This original ac02c version of the A-Star 32U4 Mini SV is a programmable module based on the ATmega32U4 from Microchip (formerly Atmel) and featuring an on-board switching step-down regulator that allows it to be powered efficiently from a 5 V to 36 V supply. This product has been replaced by a newer ac02f version with an improved regulator that operates up to 40 V and can deliver more current.
Alternatives available with variations in these parameter(s): input voltage range Select variant…
| Description | Specs (14) | Pictures (11) | Resources (24) | FAQs (0) | On the blog (6) |
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Dimensions
| Size: | 0.7″ × 1.95″ × 0.23″1 |
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| Weight: | 3.4 g2 |
General specifications
| Processor: | ATmega32U4 @ 16 MHz |
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| RAM size: | 2560 bytes |
| Program memory size: | 32 Kbytes3 |
| Motor channels: | 0 |
| User I/O lines: | 26 |
| Input voltage range: | 5 V to 36 V (SV) |
| Minimum operating voltage: | 5 V4 |
| Maximum operating voltage: | 36 V |
| Maximum output current: | 500 mA5 |
| Logic voltage: | 5 V |
| Reverse voltage protection?: | Y6 |
| 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
- For light loads. The regulator's dropout voltage increases approximately linearly with the load, from a few millivolts at no load up to around 0.6 V at 500 mA.
- 5
- Available current depends on input voltage, current consumed by the board, ambient conditions, and regulator topology. See product documentation and performance graphs for details.
- 6
- On Bat+ (LV, SV) or Bat- (ULV).
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