Microchip Technology ATMEGA644A-AUR Microcontroller, Microprocessor, FPGA Modules
IC MCU 8BIT 64KB FLASH 44TQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
ATMEGA644A-AUR
Detailed Description
IC MCU 8BIT 64KB FLASH 44TQFP
Package
44-TQFP
Key Features
Package / Case: 44-TQFP; Mounting Type: Surface Mount
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
ATMEGA644A-AUR Datasheet
Quick Jump:
Technical Specifications
Microchip Technology ATMEGA644A-AUR Microcontroller, Microprocessor, FPGA Modules technical specifications.
General
RAM Size
4K x 8
Package / Case
44-TQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
1.8V ~ 5.5V
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O
32
Speed
20MHz
EEPROM Size
2K x 8
Core Processor
AVR
Alternate Parts Comparison (ATMEGA644A-AUR vs PIC17C44-25/PT vs PIC17C43-33I/PT vs AT89S8253-24AU)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 44-TQFP | 44-TQFP | 44-TQFP | 44-TQFP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 1.8V ~ 5.5V | 4.5V ~ 6V | 4.5V ~ 6V | 2.7V ~ 5.5V |
| Core Processor | AVR | PIC | PIC | 8051 |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| RAM Size | 4K x 8 | 454 x 8 | 454 x 8 | 256 x 8 |
| Connectivity | I²C, SPI, UART/USART | UART/USART | UART/USART | SPI, UART/USART |
| Number of I/O | 32 | 33 | 33 | 32 |
| Oscillator Type | Internal | External | External | External |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | POR, PWM, WDT | POR, PWM, WDT | POR, WDT |
| Program Memory Size | 64KB (32K x 16) | 16KB (8K x 16) | 8KB (4K x 16) | 12KB (12K x 8) |
| Action |
More Parts in Microcontrollers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.