Manufacturer Part Number
ATMEGA644P-20AQ
Manufacturer
Atmel
Introduction
High-performance, low-power 8-bit Microcontroller with 64KB Flash, 4KB SRAM, and 2KB EEPROM
Product Features and Performance
8-bit AVR RISC-based microcontroller
Advanced RISC architecture with 131 powerful instructions
32 general-purpose working registers
Fully static operation
Endurance: 10,000 write/erase cycles for EEPROM
True Read-While-Write operation
64KB of in-system self-programmable Flash program memory
4KB internal SRAM
2KB internal EEPROM
Programming lock for software security
Product Advantages
Low power consumption
High performance
Flexible and scalable architecture
Extensive peripheral set
In-System Programmable Flash
On-chip debug support
Key Technical Parameters
Operating Voltage: 2.7V to 5.5V
Operating Frequency: 0 to 20 MHz
EEPROM Size: 2KB
Flash Program Memory: 64KB
SRAM Size: 4KB
I/O Pins: 32
Timers: 4 (8-bit), 2 (16-bit)
ADC Channels: 8 (10-bit)
Quality and Safety Features
Brown-out detection
Power-on reset
Watchdog timer
Sleep modes for low power consumption
Compatibility
Belongs to the AVR ATmega series of microcontrollers
Compatible with a wide range of development tools and software
Application Areas
Embedded systems
Industrial automation
Medical devices
Consumer electronics
Automotive applications
Product Lifecycle
Still actively produced and supported by Atmel/Microchip
Replacement options available, such as the ATMEGA1284P
Key Reasons to Choose This Product
High performance and low power consumption
Extensive peripheral set and flexible architecture
In-system programmable Flash for easy updates
Robust safety and security features
Wide compatibility and availability of development tools
Long-term availability and support from the manufacturer
ATMEGA644P-A15MZAtmelIC MCU 8BIT 64KB FLASH 44VQFN
ATMEGA644P-B15MZAtmelIC MCU 8BIT 64KB FLASH 44VQFN