Atmel ATMEGA16U4-AU 8-Bit AVR Microcontroller 16KB Flash USB 44-Pin TQFP

Atmel ATMEGA16U4-AU 8-Bit AVR Microcontroller is a low-power 8-bit microcontroller with 16KB of in-system programmable flash memory and an integrated USB 2.0 device module, executing up to 16 MIPS at 16 MHz.

The device is based on the AVR RISC architecture, in which instructions execute in a single clock cycle. This allows developers to balance processing speed against power consumption, making it suited to energy-sensitive applications. The supplier states that the architecture delivers code density and execution speeds up to ten times faster than conventional CISC microcontrollers.

Memory

• 16KB in-system programmable (ISP) flash memory for program storage
• 8KB dedicated to boot code
• 2.5KB SRAM
• 1024 bytes of EEPROM for data

Connectivity & Peripherals

The integrated USB 2.0 full-speed/low-speed device module supports easy connectivity for computer peripheral and embedded projects. The microcontroller also includes a 12-channel, 10-bit analogue-to-digital converter, four 8-bit PWM channels, and communication interfaces including I2C, SPI, UART, and USART.

System & Development

The device features power-on reset, programmable brown-out detection, and six sleep modes including idle, power-down, and standby. A JTAG (IEEE 1149.1) interface supports on-chip debugging and programming, and an internal 8 MHz calibrated oscillator supports on-the-fly switching between internal and external clock sources.

Physical Details

The product is supplied in a 44-pin TQFP package, with a weight of 2.188 g and dimensions of 3.3 (width), 1.5 (depth) and 4.3 (height).