PIC16F873-20/SO PIC16F873-20/SO 其他被动元件 PIC16F873-20/SP PIC16F873-20/SP 其他被动元件 PIC16F873-20/SPH PIC16F873-20I/SO PIC16F873-20I/SP PIC16F873A PIC16F873A-1/50 PIC16F873A-1/SP