Microchip Technology

ATMEGA644P-20AU  

Microcontrollers

The ATMEGA644P-20AU is a microcontroller unit (MCU) manufactured by Microchip Technology. This particular model is part of the ATmega family of MCUs, which are widely used in various applications due to their versatility and high performance.

Description:

The ATMEGA644P-20AU is a low-power CMOS 8-bit microcontroller based on the enhanced AVR RISC architecture. It features 64 Kbytes of in-system programmable Flash memory for storing the program code, along with 4 Kbytes of SRAM and 2 Kbytes of EEPROM for data storage. The device operates at a frequency of up to 20 MHz and is available in a 44-pin TQFP package.

Features:

1. 64 Kbytes of In-System Programmable Flash memory with read-while-write capability
2. 4 Kbytes of SRAM
3. 2 Kbytes of EEPROM
4. 23 general-purpose I/O lines
5. 32 general-purpose working registers
6. Nested interrupt controller with 16 priority levels
7. On-chip debug system with JTAG interface
8. Three 16-bit timer/counters with input capture and compare modes
9. Eight-channel 10-bit ADC with up to 8 analog inputs
10. Serial peripherals: two USARTs, one SPI, and one I2C
11. USB interface with integrated PHY
12. Internal and external interrupts
13. On-chip oscillator with calibration and PLL options
14. Sleep, power-down, and power-save modes for low-power operation
15. Brownout detection and reset
16. Three voltage references with external reference option
17. 44-pin TQFP package

Applications:

The ATMEGA644P-20AU is suitable for a wide range of applications due to its powerful features and flexible architecture. Some common applications include:

1. Industrial control systems
2. Medical equipment
3. Home automation and IoT devices
4. Data acquisition and signal processing systems
5. Motor control applications
6. Portable and battery-powered devices
7. Embedded systems in consumer electronics
8. Automotive control systems
9. Smart sensors and actuators
10. Security systems and access control devices

The ATMEGA644P-20AU's combination of memory, I/O capabilities, and low-power operation make it an ideal choice for a variety of embedded applications requiring a balance of performance, functionality, and energy efficiency.

ATMEGA644P-20AU Documents

Download datasheets and manufacturer documentation for ATMEGA644P-20AU

PCN Assembly/Origin :

ATMEGAxx 02/Aug/2023      

Datasheets :

ATmega644P/V Summary       ATmega164_324_644P/V Appendix       ATmega164_324_644P/V Datasheet      

PCN Packaging :

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

Design Resources :

ATmega644 Development Tool Selector      

HTML Datasheet :

ATmega644P/V Summary       ATmega164_324_644P/V Datasheet      

PCN Design/Specification :

Marking Chgs 11/Jul/2017       ATMEGA Datasheet 12/Dec/2018      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH