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atmega32u4 is low-power Atmel 8-bit AVR RISC-based microcontroller

The low-power Atmel 8-bit AVR RISC-based microcontroller featuring 32KB self-programming flash program memory, 2.5KB SRAM, 1KB EEPROM, USB 2.0 full-speed/low speed device, 12-channel 10-bit A/D-converter, and JTAG interface for on-chip-debug. The device achieves up to 16 MIPS throughput at 16 MHz. 2.7 - 5.5 Volt operation.

By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, allowing you to optimize power consumption versus processing speed.

Key Parameters Parameter Value

Flash (kBytes):32 kBytes

Pin Count:44

Max. Operating Freq. (MHz):16 MHz

CPU:8-bit AVR

Hardware QTouch Acquisition:No

Max I/O Pins:26

Ext Interrupts:13

USB Transceiver:1

USB Speed:Full Speed