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ATMEGA644P-20MU

Type	Description
rohs:	RoHS
speed:	20MHz
ram size:	4K x 8
core size:	8-Bit
eeprom size:	2K x 8
part status:	Active
peripherals:	Brown-out Detect/Reset, POR, PWM, WDT
connectivity:	I2C, SPI, UART/USART
mounting type:	Surface Mount
number of i/o:	32
core processor:	AVR
package / case:	44-VFQFN Exposed Pad
data converters:	A/D 8x10b
oscillator type:	Internal
program memory size:	64KB (32K x 16)
program memory type:	FLASH
operating temperature:	-40°C ~ 85°C (TA)
supplier device package:	44-VQFN (7x7)
voltage - supply (vcc/vdd):	2.7V ~ 5.5V