PIC18F2420-I/SOH PIC18F2420-I/SP PIC18F2420-I/SP4AP PIC18F2420-I/SPVAO PIC18F2420-I/SS PIC18F2420T-E/SO PIC18F2420T-E/SS PIC18F2420T-I/ML PIC18F2420T-I/SO PIC18F242-1/SO