PIC18F2321-E-SS PIC18F2321-I/ML PIC18F2321-I/SO PIC18F2321-I/SP PIC18F2321-I/SPH PIC18F2321-I/SS PIC18F2321T-E/SO PIC18F2321T-E/SS PIC18F2321T-E/SS021 PIC18F2321T-E/SS026