What is ATMEGA644-20MU?
ATMEGA644-20MU is a Embedded - Microcontrollers component from Microchip Technology. This product page summarizes the core sourcing details buyers need before checking price, availability, documentation, or samples.
Supply original ATMEGA644-20MU, Embedded - Microcontrollers, by Microchip Technology
IC MCU 8BIT 64KB FLASH 44VQFN
RoHS
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Key specifications
Serise
AVR® ATmega
Min Quantity
1
Category
Integrated Circuits (ICs)Sub Categroy
Embedded - MicrocontrollersDescription
IC MCU 8BIT 64KB FLASH 44VQFN
key Attributes
-
Technical document
Open The Official Datasheet
Review the latest datasheet for ATMEGA644-20MU from Microchip Technology in a separate tab so engineers and buyers can check package, electrical characteristics, and application details without leaving this product page.
Why request a quote
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Trust signals
Globally recognized certifications
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ISO 9001
Quality management processes for more consistent sourcing and handling.
AS9120B
Aerospace-focused distribution controls for traceability and reliability.
ISO 14001
Environmental management discipline across warehouse and operating workflows.
ESD Control
Electrostatic handling standards to help protect sensitive components.
Authenticity Verification
CoC Available on Request
Pre-Shipment Inspection
Responsive RFQ Support
Why buyers trust this sourcing flow
Our quality workflow is designed to reduce counterfeit risk and support confident procurement. Components are reviewed through documented handling and inspection steps so buyers can evaluate sourcing with stronger authenticity controls.
Structured product content
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Product overview
Overview
IC MCU 8BIT 64KB FLASH 44VQFN
Full technical breakdown
Detailed Specifications
Review grouped attributes and parameters without scanning one oversized table.
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Popular Specs Surfaced First
Product Attribute
Part Status
Active
Product Attribute
Packaging
Tray
Product Attribute
REACH Status
REACH Unaffected
Product Attribute
ECCN
EAR99
Product Attribute
Lead Free
Lead Free
Product Attribute
Mounting Type
Surface Mount
Part Status
Active
Packaging
Tray
REACH Status
REACH Unaffected
ECCN
EAR99
Lead Free
Lead Free
Mounting Type
Surface Mount
Published
1997
Factory Lead Time
7 Weeks
Categories
Integrated Circuits (ICs)
Peak Reflow Temperature (Cel)
260
Supply Voltage
5V
Technology
CMOS
Terminal Position
QUAD
Terminal Pitch
0.5mm
Operating Temperature
-40°C~85°C TA
Subcategory
Microcontrollers
Sub-Categories
Embedded - Microcontrollers
Frequency
20MHz
Manufacturer
Microchip Technology
Series
AVR® ATmega
Interface
2-Wire, I2C, SPI, UART, USART
Package / Case
44-VFQFN Exposed Pad
Contact Plating
Tin
Radiation Hardening
No
Reflow Temperature-Max (S)
40
Number Of Pins
44
Number Of Terminations
44
Mount
Surface Mount
Pbfree Code
yes
Number Of I/O
32
Length
7mm
EEPROM Size
2K x 8
Additional Feature
ALSO OPERATES AT 2.7V SUPPLY AT 10 MHZ
Base Part Number
ATMEGA644
Manufacturer'S Part No.
ATMEGA644-20MU
JESD-609 Code
e3
RoHS Status
ROHS3 Compliant
REACH SVHC
No SVHC
Moisture Sensitivity Level (MSL)
3 (168 Hours)
HTSUS
8542.31.0001
Oscillator Type
Internal
UPs/UCs/Peripheral ICs Type
MICROCONTROLLER, RISC
Connectivity
I2C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Data Converter
A/D 8x10b
Access Time
20 μs
Core Size
8-Bit
RAM Size
4K x 8
Core Processor
AVR
Memory Size
64kB
Program Memory Size
64KB 32K x 16
Number Of Timers/Counters
3
Bit Size
8
Program Memory Type
FLASH
DMA Channels
NO
Data Bus Width
8b
Watchdog Timer
Yes
Supply Voltage-Max (Vsup)
5.5V
Has ADC
YES
PWM Channels
YES
DAC Channels
NO
Supply Voltage-Min (Vsup)
4.5V
Voltage - Supply (Vcc/Vdd)
2.7V~5.5V
Supply Current-Max
9mA
Height Seated (Max)
1mm
Common questions
Product FAQ
Quick answers for buyers reviewing ATMEGA644-20MU, stock, documentation, and sourcing steps.
What package and description are listed for ATMEGA644-20MU?
ATMEGA644-20MU is listed with package reference -. The current product description is IC MCU 8BIT 64KB FLASH 44VQFN, and buyers should confirm package, footprint, and electrical details against the datasheet or quotation notes before approval.
Is ATMEGA644-20MU available in stock?
This page currently shows 17480 units in stock and 17480 units available for ATMEGA644-20MU. Because electronic component availability can change quickly, submit an RFQ to confirm live stock, lead time, and final pricing.
Can I request a quote or sample for ATMEGA644-20MU?
Yes. Use the Quick Quote or Request Sample action on this page to send the quantity and sourcing requirements for ATMEGA644-20MU by Microchip Technology. The TrustCompo team can review price, availability, and documentation support.
Is a datasheet available for ATMEGA644-20MU?
Yes. This page links to the datasheet for ATMEGA644-20MU by Microchip Technology, so engineers and buyers can review package, ratings, and application details before purchase.
How should buyers verify ATMEGA644-20MU before ordering?
Buyers should confirm the manufacturer, package, quantity, target price, RoHS or compliance needs, and any Certificate of Conformance or traceability requirements for ATMEGA644-20MU before approving the order.
Embedded - Microcontrollers
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