2593AS–AVR–06/05

Features

– 131 Powerful Instructions – Most Single-clock Cycle Execution

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

– Up to 20 MIPS Throughput at 20 MHz

– On-chip 2-cycle Multiplier

– 16/32/64K Bytes of In-System Self-Programmable Flash

Endurance: 10,000 Write/Erase Cycles

– Optional Boot Code Section with Independent Lock Bits

In-System Programming by On-chip Boot Program

True Read-While-Write Operation

– 512B/1K/2K Bytes EEPROM

Endurance: 100,000 Write/Erase Cycles

– 1/2/4K Bytes Internal SRAM

– Programming Lock for Software Security

– Boundary-scan Capabilities According to the JTAG Standard

– Extensive On-chip Debug Support

– Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface

– Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes

– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture

Mode

– Real Time Counter with Separate Oscillator

– Six PWM Channels

– 8-channel, 10-bit ADC

Differential mode with selectable gain at 1x, 10x or 200x

– Byte-oriented Two-wire Serial Interface

– One/Two Programmable Serial USART (ATmega644, ATmega164/324)

– Master/Slave SPI Serial Interface

– Programmable Watchdog Timer with Separate On-chip Oscillator

– On-chip Analog Comparator

– Interrupt and Wake-up on Pin Change

– Power-on Reset and Programmable Brown-out Detection

– Internal Calibrated RC Oscillator

– External and Internal Interrupt Sources

– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby

and Extended Standby

– 32 Programmable I/O Lines

– 40-pin PDIP, 44-lead TQFP, and 44-pad QFN/MLF

– 1.8 - 5.5V for ATmega164/324/644V

– 2.7 - 5.5V for ATmega164/324/644

– ATmega164/324/644V: 0 - 4MHz @ 1.8 - 5.5V, 0 - 10MHz @ 2.7 - 5.5V

– ATmega164/324/644: 0 - 10MHz @ 2.7 - 5.5V, 0 - 20MHz @ 4.5 - 5.5V

– Active: 240 µA @ 1.8V, 1MHz

– Power-down Mode: 0.1 µA @ 1.8V

8-bit

Microcontroller

with 16/32/64K

Bytes In-System

Programmable

Flash

ATmega164/V

ATmega324/V

ATmega644/V

Advance

Information

Summary

Note: This is a summary document. A complete document

is available on our Web site at www.atmel.com.