ATMEGA644P-20MUR is out of stock and can be placed on backorder.
Available Substitutes:
Parametric Equivalent

Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
ATMEGA644P-20MUR | |
|---|---|
DigiKey Part Number | ATMEGA644P-20MURTR-ND - Tape & Reel (TR) ATMEGA644P-20MURCT-ND - Cut Tape (CT) ATMEGA644P-20MURDKR-ND - Digi-Reel® |
Manufacturer | |
Manufacturer Product Number | ATMEGA644P-20MUR |
Description | IC MCU 8BIT 64KB FLASH 44VQFN |
Manufacturer Standard Lead Time | 8 Weeks |
Customer Reference | |
Detailed Description | AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 64KB (32K x 16) FLASH 44-VQFN (7x7) |
Datasheet | Datasheet |
EDA/CAD Models | ATMEGA644P-20MUR Models |
Product Attributes
Filter Similar Products
Category | Program Memory Size |
Mfr | Program Memory Type FLASH |
Series | EEPROM Size 2K x 8 |
Packaging Tape & Reel (TR) Cut Tape (CT) Digi-Reel® | RAM Size 4K x 8 |
Part Status Active | Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V |
DigiKey Programmable Not Verified | Data Converters A/D 8x10b |
Core Processor AVR | Oscillator Type Internal |
Core Size 8-Bit | Operating Temperature -40°C ~ 85°C (TA) |
Speed 20MHz | Mounting Type Surface Mount |
Connectivity I2C, SPI, UART/USART | Supplier Device Package 44-VQFN (7x7) |
Peripherals Brown-out Detect/Reset, POR, PWM, WDT | Package / Case 44-VFQFN Exposed Pad |
Number of I/O 32 | Base Product Number |
Report Product Information Error
Documents & Media
Associated Products
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (1)
| Part Number | Manufacturer | Quantity Available | DigiKey Part Number | Unit Price | Substitute Type |
|---|---|---|---|---|---|
| ATMEGA644-20MUR | Microchip Technology | 0 | ATMEGA644-20MURTR-ND | $7.02000 | Parametric Equivalent |
In-Stock: 0
4,000 estimated in stock on 27-Nov-2026
Request Stock Notification
Quantity
All prices are in USD
Cut Tape (CT) & Digi-Reel®
| Quantity | Unit Price | Ext Price |
|---|---|---|
| 1 | $7.19000 | $7.19 |
| 25 | $6.60000 | $165.00 |
| 100 | $5.98000 | $598.00 |
Tape & Reel (TR)
| Quantity | Unit Price | Ext Price |
|---|---|---|
| 4,000 | $5.98003 | $23,920.12 |
Tariff Status: Tariff may apply if shipping to the United States. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.






