ATMEGA644-20AUR Microchip Integrated Circuit (Quad Flat No-Lead) In Stock

8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND

NOT RECOMMENDEDIntegrated CircuitVerified May 2026
Package / Visual Reference
ATMEGA644-20AURQuad Flat No-Lead
Quick Facts
Manufacturer
Microchip
Package
Quad Flat No-Lead
Pin Count
44
Lifecycle
NOT RECOMMENDED
Category
Integrated Circuit
Price
From $5.0800(MOQ 1)
Temp Range
-40.0°C to 85.0°C
RoHS
Compliant
Lead Time
3–7 business days
Shipping
DHL Express · Worldwide

Specifications

Pbfree CodeYes
Manufacturer Package CodeTQFP-44
Factory Lead Time9Weeks
YTEOL3
Has ADCYES
Additional FeatureALSO OPERATES AT 2.7V SUPPLY AT 10 MHZ
Bit Size8
Boundary ScanYES
CPU FamilyAVR RISC
Clock Frequency-Max16MHz
DAC ChannelsNO
DMA ChannelsNO
FormatFIXED POINT
Integrated CacheNO
JESD-30 CodeS-PQFP-G44
JESD-609 Codee3
Low Power ModeYES
Number of External Interrupts35
Number of I/O Lines32
Number of Serial I/Os1
Number of Timers3
On Chip Data RAM Width8
On Chip Program ROM Width8
PWM ChannelsYES
Package Body MaterialPLASTIC/EPOXY
Package Equivalence CodeTQFP44,.39SQ,31
Package ShapeSQUARE
Package StyleFLATPACK, THIN PROFILE
Peak Reflow Temperature (Cel)260
Qualification StatusNot Qualified
RAM (bytes)4096
ROM (words)65536
ROM ProgrammabilityFLASH
Speed20MHz
Supply Current-Max9mA
Supply Voltage-Max5.5V
Supply Voltage-Min5V
Supply Voltage-Nom5V
Surface MountYES
TechnologyCMOS
Temperature GradeINDUSTRIAL
Terminal FinishMatte Tin (Sn)
Terminal FormGULL WING
Terminal Pitch0.8mm
Terminal PositionQUAD
Time@Peak Reflow Temperature-Max (s)40
uPs/uCs/Peripheral ICs TypeMICROCONTROLLER, RISC
PackageQuad Flat No-Lead

Compliance & Regulatory

RoHS StatusCompliant
Moisture Sensitivity LevelMSL 3
ECCNEAR99
HTS Code8542.31.00.01
Country of OriginTaiwan, Thailand

Datasheet

ATMEGA644-20AUR Datasheet Download

Official datasheet from Microchip

Alternate & Equivalent Parts

Compatible alternatives and drop-in replacements for ATMEGA644-20AUR:

ATMEGA644-20AUMicrochip Technology Inc

RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PQFP44

View Part →

Frequently Asked Questions

What is the price of ATMEGA644-20AUR?

ATMEGA644-20AUR is priced from $5.0800 USD depending on quantity. Submit an RFQ on FindMyChip for the best current pricing from authorized China distributors.

Is ATMEGA644-20AUR in stock?

ATMEGA644-20AUR is listed as in stock at FindMyChip, sourced from authorized distributors, and ships worldwide with typical 3-7 business day lead time. Submit an RFQ for current quantity pricing, MOQ, and confirmed availability.

Where can I buy ATMEGA644-20AUR?

You can buy ATMEGA644-20AUR from FindMyChip, a B2B electronic component platform sourcing from China distributors. We offer competitive pricing and low MOQ for ATMEGA644-20AUR from Microchip.

What is the datasheet for ATMEGA644-20AUR?

The official ATMEGA644-20AUR datasheet from Microchip contains full specifications including pin configuration, electrical characteristics, and application notes. Download it directly from the datasheet section above.

What package does ATMEGA644-20AUR come in?

ATMEGA644-20AUR is available in Quad Flat No-Lead packaging. See the package diagram and pinout above for detailed dimensional information.

Related Guides

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Factory-direct from China distributors, low MOQ
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About Microchip

Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.

AvailabilityIn Stock
Reference Price (USD)
From $5.0800
Buy from 1pc · Factory-direct pricing
Qty.Unit PriceExt. Price
1+$7.0060$7.01
25+$6.8104$170.26
100+$5.8100$581.00
1000+$5.3600$5360.00
5000+$5.0800$25400.00
pcs
Unit price: $7.0060 · Total: $7.01

In Stock · 24h Response · Worldwide Shipping

Lead Time3-7 business days
MOQFrom 1 piece
ShippingDHL / FedEx / UPS
OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.

TM
Thomas Mueller
Hardware Lead, SensorTech GmbH, Germany