ATmega324A/PA/324PA/644A/PA/1284/P Datasheet Summary

Overview

The ATmega324A/PA/324PA/644A/PA/1284/P is a series of low-power, CMOS 8-bit microcontrollers based on the AVR® enhanced RISC architecture. These microcontrollers are designed for a wide range of embedded control applications, offering a combination of high performance, low power consumption, and extensive peripheral support.

Key Features

• High-Performance 8-bit AVR® Microcontroller
• Advanced RISC Architecture
• 131 Powerful Instructions – Most Single-Clock Cycle Execution
• 32 × 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
• 16/32/64/128KBytes of In-System Self-programmable Flash Program Memory
• 512/1K/2K/4KBytes EEPROM
• 1/2/4/16KBytes Internal SRAM
• Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM
• Data Retention: 20 years at 85°C/ 100 years at 25°C
• 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
• QTouch® Library Support
• Capacitive Touch Buttons, Sliders, and Wheels
• QTouch and QMatrix™ Acquisition
• Up to 64 Sense Channels
• 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

Pin Configurations

• 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 - 4MHz @ 1.8 - 5.5V
• 0 - 10MHz @ 2.7 - 5.5V
• 0 - 20MHz @ 4.5 - 5.5V

Power Consumption

• Active: 0.4mA at 1MHz, 1.8V, 25°C
• Power-down Mode: 0.1µA
• Power-save Mode: 0.6µA (Including 32kHz RTC)

Peripheral Features

• Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes
• One/Two 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 1×, 10× or 200×
• 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

Memory Programming

• Program and Data Memory Lock Bits
• Fuse bits
• Signature Bytes
• Calibration byte
• Page Size

Ordering Information

• ATmega164A
• ATmega164PA
• ATmega324A
• ATmega324PA
• ATmega644A
• ATmega644PA
• ATmega1284
• ATmega1284P

Packaging Information

• 44A
• 40P6
• 44M1
• 44MC
• 49C2

Errata

• Rev. B - 01/2020
• Rev. A - 10/2018
• Rev. 8272G - 01/2015
• Rev. 8272F - 08/2014
• Rev. 8272E - 04/2013
• Rev. 8272D - 05/12
• Rev. 8272C - 06/11
• Rev. 8272B - 05/11
• Rev. 8272A - 01/10

Data Sheet Revision History

• Rev. B - 01/2020
• Rev. A - 10/2018
• Rev. 8272G - 01/2015
• Rev. 8272F - 08/2014
• Rev. 8272E - 04/2013
• Rev. 8272D - 05/12
• Rev. 8272C - 06/11
• Rev. 8272B - 05/11
• Rev. 8272A - 01/10

Conclusion

The ATmega324A/PA/324PA/644A/PA/1284/P series offers a versatile and powerful solution for a wide range of embedded control applications. With its extensive feature set, low power consumption, and robust memory options, it is well-suited for applications requiring high performance and reliability.