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Overview

The ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P 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 ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features

? High-performance, Low-power AVR? 8-bit Microcontroller

? 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 20 MHz

?? – On-chip 2-cycle Multiplier

? High Endurance Non-volatile Memory segments

?? – 16/32/64/128K Bytes of In-System Self-programmable Flash program memory

?? – 512B/1K/2K/4K Bytes EEPROM

?? – 1/2/4/16K Bytes 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

? JTAG (IEEE std. 1149.1 Compliant) Interface

?? – 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

? Peripheral Features

?? – 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

?? – Two Programmable Serial USART

?? – Master/Slave SPI Serial Interface

?? – Programmable Watchdog Timer with Separate On-chip Oscillator

?? – On-chip Analog Comparator

?? – Interrupt and Wake-up on Pin Change

? Special Microcontroller Features

?? – 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

? I/O and Packages

?? – 32 Programmable I/O Lines

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

?? – 44-pad DRQFN

?? – 49-ball VFBGA

? Operating Voltages

?? – 1.8 - 5.5V

? Speed Grades

?? – 0 - 4 MHz @ 1.8 - 5.5V

?? – 0 - 10 MHz @ 2.7 - 5.5V

?? – 0 - 20 MHz @ 4.5 - 5.5V

? Power Consumption at 1 MHz, 1.8V, 25°C

?? – Active: 0.4 mA

?? – Power-down Mode: 0.1μA

?? – Power-save Mode: 0.6μA (Including 32 kHz RTC)