Microchip ATMEGA644A-AU, 8 bit AVR, megaAVR Microcontroller, 20 MHz, 64kB FLASH, 44-Pin TQFP

RS stock no.:: 131-0316
Mfr. Part No.:: ATMEGA644A-AU
Manufacturer:: Microchip

Microchip ATMEGA644A-AU, 8 bit AVR, megaAVR Microcontroller, 20 MHz, 64kB FLASH, 44-Pin TQFP

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Subtotal (1 unit)*

R 94,80

(exc. VAT)

R 109,02

(inc. VAT)

FREE delivery for orders over R 1,500.00

Temporarily out of stock

Shipping from 16 February 2026

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Units	Per unit
1 - 4	R 94.80
5 - 9	R 92.43
10 - 49	R 89.66
50 - 99	R 86.07
100 +	R 82.63

*price indicative

RS stock no.:: 131-0316
Mfr. Part No.:: ATMEGA644A-AU
Manufacturer:: Microchip

Specification

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Microchip
	Product Type	Microcontroller
	Series	megaAVR
	Package Type	TQFP
	Mount Type	Surface
	Pin Count	44
	Device Core	AVR
	Data Bus Width	8bit
	Program Memory Size	64kB
	Interface Type	SPI, USART
	Maximum Clock Frequency	20MHz
	RAM Size	4kB
	Maximum Supply Voltage	5.5V
	Number of Programmable I/Os	32
	Analogue Comparators	1
	Minimum Operating Temperature	-40°C
	Maximum Operating Temperature	85°C
	Standards/Approvals	No
	Length	10.1mm
	Width	10.1 mm
	Height	1.05mm
	Minimum Supply Voltage	1.8V
	Number of Timers	2
	Program Memory Type	FLASH
	ADCs	8 x 10 Bit
	Automotive Standard	No
	Distrelec Product Id	301-13-662
	Instruction Set Architecture	RISC

	Select all
	Brand Microchip
	Product Type Microcontroller
	Series megaAVR
	Package Type TQFP
	Mount Type Surface
	Pin Count 44
	Device Core AVR
	Data Bus Width 8bit
	Program Memory Size 64kB
	Interface Type SPI, USART
	Maximum Clock Frequency 20MHz
	RAM Size 4kB
	Maximum Supply Voltage 5.5V
	Number of Programmable I/Os 32
	Analogue Comparators 1
	Minimum Operating Temperature -40°C
	Maximum Operating Temperature 85°C
	Standards/Approvals No
	Length 10.1mm
	Width 10.1 mm
	Height 1.05mm
	Minimum Supply Voltage 1.8V
	Number of Timers 2
	Program Memory Type FLASH
	ADCs 8 x 10 Bit
	Automotive Standard No
	Distrelec Product Id 301-13-662
	Instruction Set Architecture RISC

The Microchip ATmega48PA CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. It operates on 1.8V to 5.5V voltage range. The AVR core combines a rich instruction set with 32 general purpose working registers. It features 64Kbytes of in-system programmable flash with read-while-write capabilities, 2Kbytes EEPROM, 4Kbytes SRAM, 32 general purpose I/O lines, 32 general purpose working registers, a real-time counter, three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented Two-Wire serial interface, an 8-channel 10-bit A/D converter with optional differential input stage with programmable gain, programmable watchdog timer with internal oscillator, SPI serial port, a JTAG (IEEE® 1149.1 compliant) test interface for on-chip debugging and programming, and six software selectable power saving modes.

Up to 20MIPS throughput at 20MHz

On-chip 2-cycle multiplier

Programming Lock for Software Security

Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes

One/two 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode

Real Time Counter with Separate Oscillator

Master/Slave SPI Serial Interface

Programmable Watchdog Timer with Separate On-chip Oscillator

On-chip Analog Comparator

Interrupt and Wake-up on Pin Change

Power-on Reset and Programmable Brown-out Detection

Internal Calibrated RC Oscillator

External and Internal Interrupt Sources

44-lead TQFP package

Microchip ATMEGA644A-AU, 8 bit AVR, megaAVR Microcontroller, 20 MHz, 64kB FLASH, 44-Pin TQFP

FREE delivery for orders over R 1,500.00

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