PIC16LF1937/SD02 PIC16LF1937-E/ML PIC16LF1937-E/MV PIC16LF1937-E/P PIC16LF1937-E/PT PIC16LF1937-I/ML PIC16LF1937-I/MV PIC16LF1937-I/P PIC16LF1937-I/PT PIC16LF1937-I/PT-