Microchip Technology ATMEGA644PA-MN
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $22.48 | $22.48 |
| 15+ | $5.17 | $77.55 |
| 25+ | $5.06 | $126.50 |
| 50+ | $4.78 | $239.00 |
| 100+ | $4.22 | $422.00 |
| N+ | $0.84 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Tray | NULL |
| 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 ~ 105°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 44-VQFN (7x7) |
| Package / Case | 44-VFQFN Exposed Pad |
| ROHS |  |
The Microchip ATMEGA644PA-MN is a high-performance 8-bit AVR microcontroller in a compact 44-VFQFN package. It delivers 20MHz processing with 64KB flash and 4KB SRAM, operating from 1.8V to 5.5V. Integrated features include Brown-out Detect, POR, PWM, and WDT, ensuring robust operation across -40°C to 105°C. Ideal for industrial and automotive applications requiring low power and high reliability.
- Wide Voltage Range (1.8V-5.5V): Enables direct battery operation and 5V legacy system compatibility.
- High Temperature Tolerance (105°C): Suitable for under-hood and industrial high-heat environments.
- Integrated Safety Features: Brown-out Detect and WDT prevent system corruption during power glitches.
- Compact 44-VFQFN Package: Reduces PCB footprint for space-constrained designs.
Industrial Control Systems
The 20MHz AVR core with 64KB flash and 4KB SRAM handles real-time control loops for motor control and process automation, supported by PWM and WDT for reliable operation.
Automotive Aftermarket Sensors
With a wide 1.8V-5.5V supply and -40°C to 105°C range, it suits automotive sensor interfaces for temperature, pressure, and position monitoring.
Smart Home Gateways
Its low-power modes and rich peripheral set (POR, Brown-out Detect) enable energy-efficient hub controllers for Zigbee or Z-Wave coordination.
Portable Medical Devices
The small 44-VFQFN package and low-voltage operation support compact, battery-powered diagnostic tools like glucose meters and pulse oximeters.
Agricultural Automation
Robust I/O and 5V compatibility make it ideal for irrigation controllers and greenhouse climate systems requiring long-term field reliability.
Security & Access Panels
64KB flash allows storing complex access algorithms, while PWM drives lock actuators and WDT ensures fail-safe operation.
- Q: What is the maximum operating frequency of the ATMEGA644PA-MN?
- A: The ATMEGA644PA-MN operates at up to 20MHz with a supply voltage range of 1.8V to 5.5V.
- Q: What is the program memory size?
- A: It features 64KB of in-system programmable flash memory (32K x 16).
- Q: What package is this MCU available in?
- A: It comes in a 44-VFQFN exposed pad package, suitable for compact PCB designs.
- Q: Does it include a watchdog timer?
- A: Yes, it includes a Watchdog Timer (WDT) along with Brown-out Detect/Reset, POR, and PWM.
- Q: What is the operating temperature range?
- A: The operating temperature range is -40°C to 105°C (TA).
ATMEGA644PA-MN.pdf
- Q: What is the maximum operating frequency of the ATMEGA644PA-MN?
- A: The ATMEGA644PA-MN operates at up to 20MHz with a supply voltage range of 1.8V to 5.5V.
- Q: What is the program memory size?
- A: It features 64KB of in-system programmable flash memory (32K x 16).
- Q: What package is this MCU available in?
- A: It comes in a 44-VFQFN exposed pad package, suitable for compact PCB designs.
- Q: Does it include a watchdog timer?
- A: Yes, it includes a Watchdog Timer (WDT) along with Brown-out Detect/Reset, POR, and PWM.
- Q: What is the operating temperature range?
- A: The operating temperature range is -40°C to 105°C (TA).
