Microchip Technology ATMEGA16U4-AU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.91 | $4.91 |
| 15+ | $4.76 | $71.40 |
| 25+ | $4.65 | $116.25 |
| 50+ | $4.39 | $219.50 |
| 100+ | $3.88 | $388.00 |
| N+ | $0.78 | 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-TQFP (10x10) |
| Package / Case | 44-TQFP |
| ROHS |  |
The ATMEGA16U4-AU from Microchip is a high-performance 8-bit AVR microcontroller with a full-speed USB 2.0 interface. It operates at 16MHz with a supply range of 2.7V to 5.5V, offering 16KB flash memory and 1.25KB SRAM. The 44-TQFP package is space-efficient, and integrated features like PWM, a temperature sensor, and a watchdog timer reduce external component count. This MCU is ideal for USB-based embedded designs requiring reliable, low-power operation.
- Integrated USB 2.0: Eliminates external USB controller chips, reducing BOM cost and board space.
- Wide Voltage Range (2.7V-5.5V): Provides design flexibility for mixed 3.3V/5V logic systems without level shifters.
- On-Chip Temperature Sensor: Enables thermal monitoring without adding external sensors, simplifying PCB layout.
- Compact 44-TQFP Package: Suitable for space-constrained portable devices while offering ample I/O.
USB HID Devices
The integrated USB controller and 16MHz AVR core enable responsive keyboards, mice, and game controllers with low latency.
Battery-Powered Sensors
With a 2.7V minimum supply and multiple sleep modes, it extends battery life in portable environmental monitoring systems.
Motor Control Units
Its PWM channels and 5.5V tolerance allow direct interfacing with motor drivers for small robotics and CNC machines.
Industrial Data Loggers
The 1.25KB SRAM and 16KB flash store calibration data and logs, while the WDT ensures reliable operation in noisy environments.
Custom Keyboard Controllers
Its 44-pin TQFP provides enough I/O for matrix scanning, and the USB stack simplifies firmware development for macro pads.
Power Management Modules
The brown-out detector and POR circuits maintain stable reset states during supply fluctuations in DC-DC converter control.
- Q: What is the operating voltage range of the ATMEGA16U4-AU?
- A: The ATMEGA16U4-AU operates from 2.7V to 5.5V, making it suitable for both 3.3V and 5V systems.
- Q: What is the maximum clock speed?
- A: It runs at up to 16MHz, providing a balanced performance for USB and general embedded applications.
- Q: How much flash memory does it have?
- A: It features 16KB of in-system programmable flash memory, organized as 8K x 16 bits.
- Q: What package is available?
- A: It comes in a 44-pin TQFP package, ideal for compact PCB designs.
- Q: Does it include a temperature sensor?
- A: Yes, it has an internal temperature sensor along with brown-out detection and watchdog timer.
ATMEGA16U4-AU.pdf
- Q: What is the operating voltage range of the ATMEGA16U4-AU?
- A: The ATMEGA16U4-AU operates from 2.7V to 5.5V, making it suitable for both 3.3V and 5V systems.
- Q: What is the maximum clock speed?
- A: It runs at up to 16MHz, providing a balanced performance for USB and general embedded applications.
- Q: How much flash memory does it have?
- A: It features 16KB of in-system programmable flash memory, organized as 8K x 16 bits.
- Q: What package is available?
- A: It comes in a 44-pin TQFP package, ideal for compact PCB designs.
- Q: Does it include a temperature sensor?
- A: Yes, it has an internal temperature sensor along with brown-out detection and watchdog timer.
