Microchip Technology

ATMEGA16U4-AU  

Microcontrollers

The ATMEGA16U4-AU is a microcontroller unit (MCU) manufactured by Microchip Technology. It is based on the AVR enhanced low-power architecture, which makes it suitable for a wide range of applications that require low power consumption and high computational efficiency.

Description:

The ATMEGA16U4-AU is a 44-pin QFN package with a 16-bit CPU and 16 KB of flash memory. It operates at a frequency of up to 16 MHz and has a wide operating voltage range of 1.8-5.5V. The MCU features a rich set of communication interfaces, including a USB 2.0 full-speed interface, two serial communication interfaces (UART, SPI, and I2C), and a 10/100 Ethernet MAC with a IEEE 1588 hardware support.

Features:

1. 16-bit CPU with a maximum operating frequency of 16 MHz.
2. 16 KB of flash memory for program storage.
3. 1.8-5.5V operating voltage range.
4. USB 2.0 full-speed interface with up to 12 endpoints.
5. Two serial communication interfaces (UART, SPI, and I2C).
6. 10/100 Ethernet MAC with IEEE 1588 hardware support.
7. 44 general-purpose input/output (GPIO) pins.
8. 16-level hardware priority encoder for interrupt handling.
9. On-chip debugging and programming support with JTAG and SPI interfaces.
10. Low-power sleep modes to conserve energy.

Applications:

The ATMEGA16U4-AU is suitable for a wide range of applications due to its low power consumption, high computational efficiency, and versatile communication interfaces. Some common applications include:

1. Human Interface Devices (HID) such as keyboards, mice, and game controllers.
2. General-purpose USB peripherals and interfaces.
3. Industrial control and automation systems.
4. Smart home and IoT devices.
5. Medical equipment and monitoring systems.
6. Embedded systems in consumer electronics.
7. Networking and communication devices, such as routers and switches.
8. Data acquisition and signal processing systems.
9. Motor control and power management applications.
10. Security systems and access control devices.

The ATMEGA16U4-AU's combination of low power consumption, high computational efficiency, and a wide range of communication interfaces make it a versatile choice for various embedded systems and IoT applications.

ATMEGA16U4-AU Documents

Download datasheets and manufacturer documentation for ATMEGA16U4-AU

PCN Assembly/Origin :

Fabrication Site 27/Sep/2023      

Datasheets :

ATmega16U4,32U4 Datasheet       USB DFU Bootloader Datasheet       ATmega16U4,32U4 Summary      

PCN Packaging :

Transfer to Microchip/Label/Pkg 5/Sep/2016       MBB/Label Chgs 16/Nov/2018      

Design Resources :

ATmega16U4 Development Tool Selector      

HTML Datasheet :

USB DFU Bootloader Datasheet      

PCN Design/Specification :

Marking Chgs 11/Jul/2017       Copper Bonding Wire 06/Jun/2014      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH