芯片类

ATMEGA644PA-AU

ATMEGA644PA-AU	ATMEL
Description	Value
Analog Comparators	1
Data Bus Width	8 Bit
Data Memory Size	2048 byte
Device Core	AVR
Instruction Set Architecture	RISC
Interface Type	SPI/USART
Lead Finish	Matte Tin
Max Processing Temp	260
Maximum Operating Supply Voltage	5.5 V
Maximum Speed	20 MHz
Minimum Operating Supply Voltage	1.8 V
Mounting	Surface Mount
MSL Level	3
Number of Programmable I/Os	32
Number of Timers	3
On-Chip ADC	8-chx10-bit
Operating Supply Voltage	2.5, 3.3, 5 V
Operating Temperature	-40 to 85 °C
Pin Count	44
Product Dimensions	10.1 x 10.1 x 1.05 mm
Program Memory Size	64 KB
Program Memory Type	Flash
RAM Size	4 KB
Screening Level	Industrial
Supplier Package	TQFP
Watchdog	1