Microchip Technology ATMEGA644A-MUR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $5.39 | $5.39 |
| 15+ | $5.22 | $78.30 |
| 25+ | $5.10 | $127.50 |
| 50+ | $4.82 | $241.00 |
| 100+ | $4.25 | $425.00 |
| N+ | $0.85 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 32 |
| Program Memory Size | 64KB (32K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 2K x 8 |
| RAM Size | 4K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 5.5V |
| Data Converters | A/D 8x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 44-VQFN (7x7) |
| Package / Case | 44-VFQFN Exposed Pad |
| ROHS |  |
The ATMEGA644A-MUR is a high-performance 8-bit AVR microcontroller from Microchip Technology, offering 64KB of flash memory and 4KB of SRAM in a compact 44-VFQFN package. Operating from 1.8V to 5.5V and up to 20MHz, it provides a perfect balance of power efficiency and processing capability. With integrated brown-out detection, power-on reset, PWM channels, and a watchdog timer, this MCU ensures reliable operation in demanding environments. Its wide temperature range (-40°C to 85°C) makes it suitable for industrial and automotive applications.
- Wide Voltage Range (1.8V-5.5V): Enables direct operation from 3.3V or 5V systems without extra level shifters, simplifying design.
- High Flash Density (64KB): Allows complex firmware with room for bootloaders and data logging, reducing the need for external EEPROM.
- Low Power Consumption: Multiple sleep modes and a watchdog timer extend battery life in portable applications.
- Robust Package (44-VFQFN): Exposed pad improves thermal dissipation, ensuring stable performance at high ambient temperatures.
Industrial Automation Controllers
With a wide voltage range (1.8V-5.5V) and robust I/O, the ATMEGA644A-MUR can handle 24V industrial logic levels with proper interfacing, while its 20MHz speed ensures responsive control loops.
Smart Sensor Nodes
The low-power sleep modes and brown-out detection make it ideal for battery-operated sensors that need reliable operation over years without maintenance.
Home Automation Hubs
Its 64KB flash allows storing complex automation routines, while PWM channels can dim LEDs or control motor speeds for smart blinds and thermostats.
Portable Medical Devices
The 5.5V maximum supply and -40°C to 85°C range support wearable health monitors that must operate reliably in varying environmental conditions.
Automotive Aftermarket Modules
With a watchdog timer and POR, it can be used in car alarm systems or telematics units where system reset and fault recovery are critical.
Educational Robotics Kits
The AVR architecture is well-documented, and the 44-pin QFN package allows compact PCB designs for hobbyist robots with multiple sensors and actuators.
- Q: What is the maximum operating frequency of the ATMEGA644A-MUR?
- A: The ATMEGA644A-MUR operates at up to 20 MHz.
- Q: What is the supply voltage range?
- A: It supports 1.8V to 5.5V, making it suitable for battery-powered and 5V systems.
- Q: How much flash memory and RAM does it have?
- A: It features 64KB of flash and 4KB of SRAM.
- Q: What package is available?
- A: It comes in a 44-VFQFN exposed pad package.
- Q: Does it include a watchdog timer?
- A: Yes, it has a WDT along with brown-out detection and POR.
ATMEGA644A-MUR.pdf
- Q: What is the maximum operating frequency of the ATMEGA644A-MUR?
- A: The ATMEGA644A-MUR operates at up to 20 MHz.
- Q: What is the supply voltage range?
- A: It supports 1.8V to 5.5V, making it suitable for battery-powered and 5V systems.
- Q: How much flash memory and RAM does it have?
- A: It features 64KB of flash and 4KB of SRAM.
- Q: What package is available?
- A: It comes in a 44-VFQFN exposed pad package.
- Q: Does it include a watchdog timer?
- A: Yes, it has a WDT along with brown-out detection and POR.
