Microchip Technology ATMEGA16U4-MU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.70 | $4.70 |
| 15+ | $4.55 | $68.25 |
| 25+ | $4.46 | $111.50 |
| 50+ | $4.21 | $210.50 |
| 100+ | $3.71 | $371.00 |
| N+ | $0.74 | 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, Temp Sensor, WDT |
| Number of I/O | 26 |
| Program Memory Size | 16KB (8K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 512 x 8 |
| RAM Size | 1.25K 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-VQFN (7x7) |
| Package / Case | 44-VFQFN Exposed Pad |
| ROHS |
The ATMEGA16U4-MU is an 8-bit AVR microcontroller from Microchip, designed for applications requiring USB connectivity and flexible I/O. It operates at up to 16MHz with 16KB flash and 1.25KB RAM. The device includes a temperature sensor, PWM, and brown-out detection, all in a compact 44-VFQFN package. Its wide operating voltage range makes it compatible with both 3.3V and 5V systems.
- Integrated USB: Simplifies design for USB-based devices without external controllers.
- Wide voltage range: Supports 2.7V to 5.5V, easing integration with mixed-voltage systems.
- On-chip temperature sensor: Enables thermal monitoring without additional components.
- Compact QFN package: Saves board space while providing exposed pad for better thermal dissipation.
USB Peripherals
With native USB support and 16MHz processing, it is ideal for custom keyboards, game controllers, and USB-to-serial adapters.
Consumer Electronics
The wide voltage range (up to 5.5V) simplifies interfacing with legacy 5V sensors and displays in remote controls and toys.
Industrial Sensors
PWM outputs and a temperature sensor allow for direct motor speed control and thermal monitoring in factory equipment.
Battery Management
Low-power sleep modes and a watchdog timer make it suitable for monitoring battery state in portable devices.
Educational Kits
The AVR architecture is well-documented, making it a great choice for teaching embedded systems and robotics.
Lighting Control
Multiple PWM channels enable smooth dimming and color mixing in LED lighting systems.
- Q: What is the maximum clock speed?
- A: The ATMEGA16U4-MU runs at up to 16MHz.
- Q: What is the supply voltage range?
- A: It operates from 2.7V to 5.5V.
- Q: How much flash memory is available?
- A: It has 16KB of flash memory.
- Q: Does it have a temperature sensor?
- A: Yes, it includes an internal temperature sensor.
- Q: What package is this device offered in?
- A: It comes in a 44-VFQFN exposed pad package.
- Q: What is the maximum clock speed?
- A: The ATMEGA16U4-MU runs at up to 16MHz.
- Q: What is the supply voltage range?
- A: It operates from 2.7V to 5.5V.
- Q: How much flash memory is available?
- A: It has 16KB of flash memory.
- Q: Does it have a temperature sensor?
- A: Yes, it includes an internal temperature sensor.
- Q: What package is this device offered in?
- A: It comes in a 44-VFQFN exposed pad package.

ATMEGA16U4-MU.pdf