A-Star 32U4 Micro
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| Manufacturer | Polulu |
|---|---|
| Host port | USB Micro B |
| Microcontroller | ATMega32U4 |
| MPU | AVR (8-bit) |
| Voltage | 5V |
| Clock speed | 16 MHz |
| Digital I/O pins | 18 |
| I/O Voltage | 5V |
| RAM | 2.5 KB |
| Program memory | 32 KB |
| EEPROM | 1 KB |
| Website | www.pololu.com/product/3101 |
The A-Star 32U4 Micro is a Arduino-compatible microcontroller board from Polulu, with the popular ATmega32u4 microcontroller.
It is small, only one inch long, with components on both sides.
Pinout
The silkscreen shows Arduino numbering
| Arduino/AVR | ↑ | AVR/Arduino | ||||
|---|---|---|---|---|---|---|
| 9/PB5 | USB | PF7/18/A0 | ||||
| 8/PB4 | PF6/19/A1 | |||||
| 7/PE6 | PB6/10/A10 | |||||
| 6/PD7 | PB7/11 | |||||
| 5/PC6 | PD6/12 | |||||
| 4/PD4 | RESET | |||||
| 3/PD0 | +3.3 V | |||||
| 2/PD1 | +5V | |||||
| 1/PD3 | +5V | 16/PB2 | GND | GND | ||
| 0/PD2 | 14/PB3 | 15/PB1 | RESET | V in | ||
PC7: Yellow LED, driven high
PD5: Green LED, driven low.
+3.3V: From the ATmega32U4's internal power regulator. Max 50 mA.
V in: must be 5.5—15 V. Max capacity of the power regulator is 100 mA.
