- Stock: In Stock
- Brand: Pololu - USA
- Model: DEV-2512
- Weight: 0.06kg
- MPN: 3101
The A-Star 32U4 Micro breaks out 15 general-purpose I/O lines along two rows of pins, including 7 usable as PWM outputs and 8 usable as analog inputs. It fits all this into a 20-pin dual in-line package (DIP) measuring only 1″ × 0.6″ (even smaller than competing ATmega32U4 boards like the Teensy 2.0 and Pro Micro), and its 0.1″ pin spacing makes the A* easy to use with solderless breadboards, perfboards, and 0.1″-pitch connectors.
Features:
- Dimensions: 1″ × 0.6″ (1.05″ × 0.6″ including USB Micro-B connector)
- Programmable 16 MHz Atmel ATmega32U4 AVR microcontroller
- 32 KB flash (4 KB used by bootloader, leaving 28 KB available for user program by default)
- 2.5 KB SRAM
- 1 KB EEPROM
- Native full-speed USB (12 Mbps)
- Preloaded with Arduino-compatible bootloader (no external programmer required)
- Many I/O lines in a small package
- 15 general-purpose I/O pins available along the sides of the board
- 3 additional I/O pins available on ISP header
- 7 pins can be configured as hardware PWM outputs
- 8 pins can be configured as analog inputs
- 2 user-controllable LEDs
- Can be powered from USB or external 5.5 V to 15 V source on VIN
- PTC fuse on VBUS supply
- Reverse-voltage protection on VIN supply
- 6-pin ISP header for use with an external programmer
Specification:
| Size | : | 0.6″ × 1.05″ × 0.18″ |
| Weight | : | 1.3 g |
| Processor | : | ATmega32U4 @ 16 MHz |
| RAM size | : | 2560 bytes |
| Program memory size | : | 32 Kbytes |
| Motor channels | : | 0 |
| User I/O lines | : | 154 |
| Minimum operating voltage | : | 5.5 V |
| Maximum operating voltage | : | 15 V |
| Logic voltage | : | 5 V |
| Reverse voltage protection | : | Yes |
| External programmer required | : | No |
Note: 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.
Arduino Compatibility:
The A-Star 32U4 ships with a preloaded Arduino compatible bootloader (which uses 4 KB of flash memory, leaving 28 KB available for the user program). We provide a software add-on that enables the board to be easily programmed from the Arduino environment. The A-Star 32U4 uses the same microcontroller as the Arduino Leonardo and Arduino Micro and runs at the same frequency, making it just as powerful. Although the larger boards offer a few more I/O pins, the A-Star 32U4 Micro fits in an area half that of the Arduino Micro, and it takes up only 11% as much area as a standard full-size Arduino!
Included hardware:
- 1x A-Star 32U4 Micro base board
- 1×20-pin breakaway 0.1″ male header: To use the board with perfboards, breadboards, or 0.1″ female connectors.
- 2×3 header: Allows external programming of the microcontroller through the AVR ISP interface, such as with our USB AVR programmer.
Note: This product requires a USB A to Micro-B cable (not included) to connect to a computer.
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