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)