PIC16F727-I/MV PIC16F727-I/P PIC16F727-I/PT PIC16F727-I/PT 存储IC PIC16F727-I/SS PIC16F727T-E/PTVAO PIC16F727T-I/ML PIC16F727T-I/MV PIC16F727T-I/PT PIC16F72-E/ML