DATA SHEET MOS INTEGRATED CIRCUIT µPD17225, 172.
NEC
UPD17225 - 4-BIT SINGLE-CHIP MICROCONTROLLER
DATA SHEET MOS INTEGRATED CIRCUIT µPD17225, 17226, 17227, 17228 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL .
