Microchip Technology ATMEGA32U4-AU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $6.00 | $6.00 |
| 15+ | $5.52 | $82.80 |
| 25+ | $5.40 | $135.00 |
| 50+ | $5.10 | $255.00 |
| 100+ | $4.50 | $450.00 |
| N+ | $0.90 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Tray | |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 16MHz |
| Connectivity | I2C, SPI, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 26 |
| Program Memory Size | 32KB (16K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 1K x 8 |
| RAM Size | 2.5K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| Data Converters | A/D 12x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 44-TQFP (10x10) |
| Package / Case | 44-TQFP |
| ROHS |  |
The ATMEGA32U4-AU from Microchip Technology is an 8-bit AVR MCU running at 16 MHz with 32KB flash and 2.5K RAM. It operates from 2.7V to 5.5V and includes a USB 2.0 controller, PWM, and brown-out detection. In a 44-TQFP package, it is popular for USB peripherals and hobbyist projects.
- Integrated USB 2.0 – eliminates external USB interface ICs, reducing cost.
- Wide voltage range (2.7V–5.5V) – works with both 3.3V and 5V systems.
- 16 MHz AVR core – sufficient for HID and control applications.
- Mature ecosystem – extensive community and library support for rapid development.
USB HID Devices
Integrated USB controller enables custom keyboards, mice, and game controllers without external chips.
DIY Electronics Projects
5V operation and 16 MHz speed make it ideal for Arduino-compatible prototyping boards.
Consumer Remote Controls
Low power consumption and PWM support IR signal generation in universal remotes.
Industrial Data Loggers
2.5K RAM buffers sensor data; WDT ensures reliable operation in remote monitoring.
Automotive Aftermarket
5V tolerance and -40°C to 85°C range suit car diagnostic tools and lighting controllers.
Educational Robotics
32KB flash stores simple control loops; PWM drives hobby servos in learning kits.
- Q: What is the core of the ATMEGA32U4-AU?
- A: It uses an 8-bit AVR core running at 16 MHz.
- Q: What voltage range does it support?
- A: It operates from 2.7V to 5.5V, compatible with 3.3V and 5V logic.
- Q: How much flash memory is available?
- A: It has 32KB flash (16K x 16) for firmware storage.
- Q: Does it include USB support?
- A: Yes, it has an integrated USB 2.0 full-speed controller.
- Q: What package is this MCU in?
- A: It comes in a 44-TQFP package, suitable for compact designs.
ATMEGA32U4-AU.pdf
- Q: What is the core of the ATMEGA32U4-AU?
- A: It uses an 8-bit AVR core running at 16 MHz.
- Q: What voltage range does it support?
- A: It operates from 2.7V to 5.5V, compatible with 3.3V and 5V logic.
- Q: How much flash memory is available?
- A: It has 32KB flash (16K x 16) for firmware storage.
- Q: Does it include USB support?
- A: Yes, it has an integrated USB 2.0 full-speed controller.
- Q: What package is this MCU in?
- A: It comes in a 44-TQFP package, suitable for compact designs.
