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ATMega644 Microcontroller AVR

ATMega644 Microcontroller AVR Specifications:

  • Manufacturer: Microchip
  • Product Category: 8-bit Microcontrollers – MCU
  • Core: AVR
  • Program Memory Size: 64 kB
  • Data RAM Size: 4 kB
  • Package/Case: PDIP-40
  • Maximum Clock Frequency: 20 MHz
  • ADC Resolution: 10 bit
  • Number of I/Os: 32 I/O
  • Supply Voltage – Min: 2.7 V
  • Supply Voltage – Max: 5.5 V



ATMega644 Microcontroller AVR core combines a rich instruction set with 32 general-purpose working registers. All 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.

The ATMega644 Microcontroller provides the following features: 64 Kb of In-System Programmable Flash with Read-While-Write capabilities, 2 Kb EEPROM, 4 Kb S-RAM, 32 general purpose I/O lines, 32 general purpose working registers, Real Time Counter (RTC), three flexible Timer/Counters with compare modes and PWM, 2 USARTs, a byte-oriented 2-wire Serial Interface, a 8-channel, 10-bit ADC with optional differential input stage with programmable gain, programmable Watchdog Timer with Internal Oscillator, an SPI serial port, IEEE std. 1149.1 compliant J-TAG test interface, also used for accessing the On-chip Debug system and programming and six software selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning.

ATMega644 IC price in pakistan

ATMega644 Microcontroller price in pakistan




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