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8-bit AVR Microcontrollers
ATmega644PA
DATASHEET COMPLETE
Introduction
The Atmel
®
picoPower
®
ATmega644PA 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 ATmega644PA
achieves throughputs close to 1MIPS per MHz. This empowers system
designer to optimize the device for power consumption versus processing
speed.
Feature
High Performance, Low Power Atmel
®
AVR
®
8-Bit Microcontroller Family
• Advanced RISC Architecture
– 131 Powerful Instructions
– Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 20 MIPS Throughput at 20MHz
– On-chip 2-cycle Multiplier
• High Endurance Non-volatile Memory Segments
– 64KBytes of In-System Self-Programmable Flash Program
Memory
– 2KBytes EEPROM
– 4KBytes Internal SRAM
– Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
– Data Retention: 20 Years at 85°C/100 Years at 25°C
(1)
– Optional Boot Code Section with Independent Lock Bits
• In-System Programming by On-chip Boot Program
• True Read-While-Write Operation
– Programming Lock for Software Security
• Atmel QTouch
®
Library Support
– Capacitive Touch Buttons, Sliders and Wheels
– QTouch and QMatrix acquisition
– Up to 64 Sense Channels
Atmel-42717C-ATmega644PA_Datasheet_Complete-10/2016
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