PIC16F877A-E/L PIC16F877A-E/ML PIC16F877A-E/P PIC16F877A-E/PT PIC16F877A-I P PIC16F877A-I/L PIC16F877A-I/L 其他被动元件 PIC16F877A-I/LG PIC16F877A-I/LH PIC16F877A-I/ML