Microchip Technology ATMEGA644P-20MQ
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $23.92 | $23.92 |
| 15+ | $5.50 | $82.50 |
| 25+ | $5.38 | $134.50 |
| 50+ | $5.08 | $254.00 |
| 100+ | $4.49 | $449.00 |
| N+ | $0.90 | 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) | 2.7V ~ 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 ATMEGA644P-20MQ is an 8-bit AVR microcontroller with a 20MHz clock and 64KB of flash memory. It operates from 2.7V to 5.5V and includes 4KB of RAM. The 44-pin VFQFN package with exposed pad offers excellent thermal performance for power-intensive applications. Integrated Brown-out Detect/Reset, POR, PWM, and WDT ensure robust operation.
- Exposed pad package – superior heat dissipation for high-current PWM.
- 20MHz AVR core – fast execution for real-time control.
- 64KB flash – supports complex firmware with OTA updates.
- Wide temperature range (-40°C to 105°C) – reliable in automotive and industrial settings.
Compact Motor Drivers
The VFQFN package with exposed pad improves heat dissipation for continuous PWM motor drive in drones.
Automotive ECU Modules
Its 105°C rating and 20MHz speed handle fuel injection timing in small engine control units.
Industrial Encoder Interfaces
With 4KB RAM and fast I/O, it can decode quadrature encoder signals for CNC machine position feedback.
Smart Grid Meters
The 64KB flash stores tariff tables and communication stacks for energy metering in smart homes.
Security Systems
Its small footprint and multiple timers support motion sensor processing and alarm scheduling in intrusion detectors.
Portable Test Equipment
The exposed pad allows reliable operation in handheld oscilloscopes and multimeters without overheating.
- Q: What is the maximum clock speed?
- A: It runs at up to 20MHz.
- Q: What is the supply voltage range?
- A: It operates from 2.7V to 5.5V.
- Q: How much flash and RAM does it have?
- A: It includes 64KB of flash and 4KB of RAM.
- Q: What package is available?
- A: It comes in a 44-pin VFQFN package with exposed pad for better thermal performance.
- Q: Does it have brown-out detection?
- A: Yes, it has Brown-out Detect/Reset, POR, PWM, and WDT.
ATMEGA644P-20MQ.pdf
- Q: What is the maximum clock speed?
- A: It runs at up to 20MHz.
- Q: What is the supply voltage range?
- A: It operates from 2.7V to 5.5V.
- Q: How much flash and RAM does it have?
- A: It includes 64KB of flash and 4KB of RAM.
- Q: What package is available?
- A: It comes in a 44-pin VFQFN package with exposed pad for better thermal performance.
- Q: Does it have brown-out detection?
- A: Yes, it has Brown-out Detect/Reset, POR, PWM, and WDT.
