Microchip ATMEGA644-20MUR Microcontrollers
32KB 2.7V~5.5V AVR 20MHz FLASH 32 QFN-44-EP(7x7) Microcontroller Units (MCUs/MPUs/SOCs)
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
ATMEGA644-20MUR
Detailed Description
Advanced Microchip ATMEGA644-20MUR Microcontrollers for precision electronics.
Package
44-VFQFN Exposed Pad
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
ATMEGA644-20MUR Datasheet
Quick Jump:
Technical Specifications
Microchip ATMEGA644-20MUR Microcontrollers technical specifications.
General
Series
AVR® ATmega
RAM Size
4K x 8
RoHS
Yes
Package / Case
44-VFQFN Exposed Pad
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
2.7V ~ 5.5V
Lifecycle Status
Active
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O
32
Related Parts Comparison (ATMEGA644-20MUR vs ATMEGA16L-8MI vs ATMEGA1284-MUR vs ATMEGA324PV-10MU)
Side-by-side specifications of related catalog parts.
Engineering verification required. Related parts may have different electrical ratings, pinouts, footprints, and operating limits. Verify suitability for your circuit before substitution.
| This Part | Related Part | Related Part | Related Part | |
|---|---|---|---|---|
| Series | AVR® ATmega | AVR® ATmega | ATmega1284 | ATmega324P |
| Package / Case | 44-VFQFN Exposed Pad | 44-VFQFN Exposed Pad | 44-VFQFN Exposed Pad | 44-VFQFN Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V |
| Core Processor | AVR | AVR | AVR | AVR |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| RAM Size | 4K x 8 | 1K x 8 | 16K x 8 | 2K x 8 |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Active | Obsolete | Active | Active |
| Connectivity | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART |
| Data Converters | A/D 8x10b | A/D 8x10b | A/D 8x10b | A/D 8x10b |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
MC9S08QE64CLDNXP SemiconductorsNXP
IC MCU 8BIT 64KB FLASH 44LQFP
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