PIC16F873-20/SPH PIC16F873-20I/SO PIC16F873-20I/SP PIC16F873A PIC16F873A-1/50 PIC16F873A-1/SP PIC16F873A-E/ML PIC16F873A-E/SO PIC16F873A-E/SOVAO PIC16F873A-E/SP