Microchip ATMEGA644P-20AQR
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Compliance
RoHS
Compliant
Physical
Case/Package
TQFP
Contact Plating
Tin
Mount
Surface Mount
Number of Pins
44
Supply Chain
Lifecycle Status
Production
Technical
Core Architecture
AVR
Data Bus Width
8 b
Frequency
4 MHz
Interface
I2C, SPI, UART, USART
Max Frequency
20 MHz
Max Operating Temperature
85 °C
Max Supply Voltage
85 °C
Memory Size
7 kB
Memory Type
FLASH, OTP
Min Operating Temperature
-40 °C
Min Supply Voltage
-40 °C
Number of I/Os
22
Number of Programmable I/O
32
Number of Timers/Counters
3
Oscillator Type
External
Packaging
Cut Tape
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
RAM Size
4 kB
Watchdog Timer
Yes