ATMEGA644P-20PU Datasheet PDF - Microchip

The ATMEGA644P-20PU is a low-power CMOS 8-bit Microcontroller, based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the microcontroller achieves throughputs approaching 1 MIPS per MHz allowing the system designed to optimize power consumption versus processing speed.

● High-performance, Low-power AVR® 8-Bit Microcontroller

● Advanced RISC Architecture

● High Endurance Non-volatile Memory Segments

● JTAG (IEEE Standard 1149.1 Compliant) Interface

● Power-on Reset and Programmable Brown-out Detection

● Internal Calibrated RC Oscillator

● External and Internal Interrupt Sources

● Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby Sleep Modes

● 0 to 20MHz at 4.5 to 5.5V Speed Grade

● 0.4mA Active, 0.1µA Power-down mode, 0.6µA Power-save mode (32kHz RTC) power consumption