PIC18LF4550-IPTH PIC18LF4550T-I/ML PIC18LF4550T-I/PT PIC18LF4553-I/ML PIC18LF4553-I/P PIC18LF4553-I/PT PIC18LF4553T-I/ML PIC18LF4553T-I/PT PIC18LF4580-E/P PIC18LF4580-I/ML