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Manufacturer Part No:  ATTINY4313-SU
Manufacturer:  Atmel    
RoHS:  Yes    
Core:  AVR    
Processor Series:  ATTINYx    
Data Bus Width:  8 bit    
Maximum Clock Frequency:  20 MHz    
Program Memory Size:  4 KB    
Data RAM Size:  256 B    
Operating Supply Voltage:  1.8 V to 5.5 V    
Package / Case:  SOIC-20    
Mounting Style:  SMD/SMT    
Data ROM Size:  256 B    
Height:  2.65 mm
Interface Type:  USI
Length:  13 mm
Maximum Operating Temperature:  + 85 C
Minimum Operating Temperature:  - 40 C
Number of Programmable I/Os:  18
Number of Timers:  2
Program Memory Type:  Flash
Factory Pack Quantity:  37
Supply Voltage - Max:  5.5 V
Supply Voltage - Min:  1.8 V
Width:  10.65 mm