ATmega644A AVR microcontroller.
We use this in our Alpha Clock Five kit, it has 32 programmable I/O in an easy-to-use 40-pin DIP package.
Specifications
We use this in our Alpha Clock Five kit, it has 32 programmable I/O in an easy-to-use 40-pin DIP package.
Specifications
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IC type: AVR microcontroller
Core size: 8-bit
Speed: up to 20MHz
Number of I/O: 32
Program memory size: 64Kb (32K x16)
Program memory type: Flash
EEPROM size: 2K x 8
RAM size: 4K x 8
Package: DIP-40 (0.1" x 0.3" pin spacing)
Supply voltage: 1.8 V - 5.5 V
Lead-free (RoHS compliant): Yes
Manufacturer: Atmel
Manufacturer part number: ATmega644A-PU
Datasheet (PDF)
