PIC16LF877-20/P PIC16LF877-20/PQ PIC16LF877-20/PT PIC16LF877-20I/PT PIC16LF877A-I/L PIC16LF877A-I/ML PIC16LF877A-I/P PIC16LF877A-I/PI PIC16LF877A-I/PT PIC16LF877A-I/PT 高频器件