ATMEGA644 QFP-44 AVR Microcontroller IC Chip – 100% New
ATMEGA644 QFP-44 AVR Microcontroller IC Chip – 100% New
ATMEGA644 Series QFP-44 AVR Microcontroller IC Chip
Get reliable, 100% new ATMEGA644 series microcontroller chips in QFP-44 package format. These 8-bit AVR microcontrollers from Microchip (formerly Atmel) are ideal for embedded systems, electronics prototyping, DIY projects, and professional circuit board development. Each chip is brand new and fully functional straight out of the package.
Compatible Part Numbers
- ATMEGA644V-10AU
- ATMEGA644P-20AU
- ATMEGA644PV-10AU
- ATMEGA644-20AU
- ATMEGA644PA-AU
- ATMEGA644A-AU
Key Features
- Architecture: 8-bit AVR RISC-based microcontroller
- Package: QFP-44 (Quad Flat Package, 44-pin)
- Flash Memory: 64KB in-system programmable flash
- SRAM: 4KB internal SRAM
- EEPROM: 2KB EEPROM storage
- I/O Pins: Up to 32 programmable I/O lines
- Communication: USART, SPI, TWI (I2C) interfaces
- Timers: Two 8-bit timers and one 16-bit timer
- Operating Voltage: 1.8V–5.5V (V variants) / 2.7V–5.5V (standard)
- Speed Grades: Up to 10 MHz or 20 MHz depending on variant
- Condition: 100% Brand New
What's in the Box
- 1 × ATMEGA644 Series QFP-44 Microcontroller Chip (variant of your choice)
Applications
- Embedded systems and firmware development
- Arduino-compatible custom boards
- Robotics and automation controllers
- Industrial control systems
- DIY electronics and hobbyist projects
- PCB repair and component replacement
Made in Mainland China.
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Frequently Asked Questions
Q: What is the difference between the ATMEGA644 variants (V, P, PV, PA, A)?
A: The ATMEGA644 series includes several variants optimized for different use cases. The "V" suffix denotes a low-voltage version (operates down to 1.8V), "P" indicates picoPower technology for ultra-low power consumption, "PA" combines picoPower with extended features, and "A" is an updated standard version. Speed grades of 10 MHz and 20 MHz are also available depending on the variant — check the part number carefully to select the right chip for your design.
Q: Is this ATMEGA644 chip compatible with Arduino IDE?
A: Yes, the ATMEGA644 series is compatible with the Arduino IDE using the MightyCore board support package. This makes it a popular choice for developers who want more I/O pins, more flash memory, and more SRAM than the standard Arduino Uno while still using familiar AVR tooling and libraries.
Q: What package type is this chip, and how do I solder it?
A: This chip comes in the QFP-44 (Quad Flat Package, 44-pin) surface-mount format. It is designed for SMD (surface-mount device) soldering onto a PCB. For prototyping, a QFP-44 breakout adapter board can be used to make it breadboard-compatible. Reflow soldering or careful hand soldering with flux is recommended.