PIC18F2520-E/SO PIC18F2520-E/SOO32 PIC18F2520-E/SP PIC18F2520-E/SS PIC18F2520-ES0 PIC18F2520I PIC18F2520-I/ML PIC18F2520-I/P PIC18F2520-I/PT PIC18F2520I/SO