PIC18F2439-E/SO PIC18F2439-E/SP PIC18F2439-I/P PIC18F2439-I/SO PIC18F2439-I/SP PIC18F2439T-E/SO PIC18F2439T-I/SO PIC18F243-I/P PIC18F243-I/SO PIC18F2440-I/ML