Microchip Technology

ATMEGA644A-AU  

Microcontrollers

The ATMEGA644A-AU is a microcontroller unit (MCU) manufactured by Microchip Technology. It is a part of the AVR Enhanced series of 8-bit MCUs and is based on the AVR architecture. The ATMEGA644A-AU is designed for a wide range of applications, including industrial control, automotive, medical, and consumer electronics.

Description:

The ATMEGA644A-AU is a low-power CMOS 8-bit microcontroller with advanced RISC architecture. It features 64 Kbytes of In-System Programmable Flash memory, 4 Kbytes of In-System Programmable SRAM, and 2 Kbytes of In-System Programmable EEPROM. The device operates at a frequency of up to 20 MHz and has a wide operating voltage range of 1.8 to 5.5 volts.

Features:

1. 64 Kbytes of In-System Programmable Flash memory for program and data storage.
2. 4 Kbytes of In-System Programmable SRAM for fast data access.
3. 2 Kbytes of In-System Programmable EEPROM for non-volatile data storage.
4. Advanced RISC architecture with 131 powerful instructions and a 16-bit data bus for efficient code execution.
5. Up to 44 general-purpose I/O lines with optional internal pull-up resistors.
6. 32 general-purpose working registers for flexible data manipulation.
7. Real-time counter (RTC) with alarm and 8-bit general-purpose timer/counter with PWM.
8. 8-channel, 10-bit Analog-to-Digital Converter (ADC) with up to 8 external inputs.
9. 2-channel 8-bit Communication Interface (USIC) with SPI, I2C, and UART capabilities.
10. On-chip debug system with JTAG and ISP interfaces.
11. Enhanced sleep mode with eight different sleep modes for power optimization.
12. Integrated voltage regulator and internal oscillator with calibration.
13. Electrostatic discharge (ESD) protection of up to 4 kV.

Applications:

1. Industrial control systems and automation.
2. Automotive applications, such as body control modules and instrument clusters.
3. Medical devices, including portable monitoring equipment and diagnostic tools.
4. Consumer electronics, such as home automation systems and portable devices.
5. Data acquisition and signal processing systems.
6. Battery-powered devices, benefiting from the low-power features of the MCU.
7. Embedded systems requiring non-volatile memory for data storage.

The ATMEGA644A-AU is a versatile and powerful MCU that can be used in a wide range of applications, thanks to its advanced features, low-power capabilities, and flexible I/O options.

ATMEGA644A-AU Documents

Download datasheets and manufacturer documentation for ATMEGA644A-AU

PCN Assembly/Origin :

Fabrication Site 27/Sep/2023      

Datasheets :

ATmega164A/PA/324A/PA/644A/PA/1284/P      

PCN Packaging :

Boxes 07/Dec/2016       MBB/Label Chgs 16/Nov/2018      

Design Resources :

ATmega644 Development Tool Selector      

PCN Design/Specification :

ATMEGA Datasheet 11/Dec/2018       ATmega164A/PA/324A/PA/644A/PA/1284/P 20/Jan/2020      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH