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ATMEGA644P-20MQR

Microchip Technology's ATMEGA644P-20MQR is a low-power, high-performance 8-bit microcontroller that belongs to the AVR Enhanced series. It is designed for a wide range of applications, including industrial control, medical devices, and portable electronics.

Description:

The ATMEGA644P-20MQR is a 28-pin microcontroller with a 20 MHz maximum operating frequency. It features an integrated 64 KB in-system programmable flash memory, 4 KB EEPROM, and 4 KB SRAM. The device is available in a QFN package with a RoHS-compliant lead finish.

Features:

1. 20 MHz maximum operating frequency
2. 64 KB in-system programmable flash memory
3. 4 KB EEPROM
4. 4 KB SRAM
5. 28-pin QFN package
6. RoHS-compliant lead finish
7. Low-power consumption
8. Enhanced ISP and I2C programming interfaces
9. On-chip debugging support with JTAG and debugWIRE
10. Up to 44 general-purpose I/O lines with optional pull-ups
11. 23 extended I/O lines for external interrupts, TWI, SPI, and USART
12. 8-channel, 10-bit ADC with up to 8 analog inputs
13. Programmable watchdog timer with separate pre-scaler and window mode
14. Real-time clock with calendar functionality
15. Power-saving sleep modes

Applications:

1. Industrial control systems
2. Medical devices and equipment
3. Portable electronics
4. Home automation and smart home devices
5. Battery-powered devices
6. Data acquisition and signal processing systems
7. Motor control applications
8. Security systems and access control devices
9. Handheld devices and wearable technology
10. Communication and networking devices

The ATMEGA644P-20MQR is a versatile and powerful microcontroller that can be used in a wide range of applications, thanks to its combination of performance, memory, and low-power features.