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Microchip ATMEGA644-20AU
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Compliance
Lead Free
Lead Free
Radiation Hardening
No
REACH SVHC
No SVHC
RoHS
Compliant
Dimensions
Height
1 mm
Length
10 mm
Width
10 mm
Physical
Case/Package
TQFP
Contact Plating
Tin
Mount
Surface Mount
Number of Pins
44
Supply Chain
Lifecycle Status
Production
Technical
Access Time
20 µs
Core Architecture
AVR
Data Bus Width
8 b
Density
512 kb
Frequency
20 MHz
Interface
2-Wire, I2C, SPI, UART, USART
Max Frequency
20 MHz
Max Operating Temperature
85 °C
Max Supply Voltage
5.5 V
Memory Size
64 kB
Memory Type
FLASH
Min Operating Temperature
-40 °C
Min Supply Voltage
2.7 V
Number of ADC Channels
8
Number of Bits
8
Number of I/Os
32
Number of Inputs
32
Number of Outputs
32
Number of Programmable I/O
32
Number of PWM Channels
6
Number of Timers/Counters
3
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
RAM Size
4 kB
Watchdog Timer
Yes