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MPD78C14 Datasheet(PDF) 55 Page - NEC |
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MPD78C14 Datasheet(HTML) 55 Page - NEC |
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55 / 373 page  CHAPTER 2 PIN FUNCTIONS 37 2.4 Pin Mask Options ( µPD78C18/78C14A/78C12A/78C11A Only) The following mask options are available for pins, and these can be selected bit-wise to suit the purpose. Pin Name Mask Option PA7 to PA0 <1> Pull-up resistor incorporated PB7 to PB0 <2> Pull-up resistor not incorporated PC7 to PC0 Caution If a pull-up resistor is incorporated in PC3, the zero-cross function cannot be operated correctly. 2.5 Processing of Unused Pins Pin Recommended Connection PA0 to PA7 Connect to VSS or VDD via a resistor. PB0 to PB7 PC0 to PC7 PD0 to PD7 PF0 to PF7 RD Leave open. WR ALE STOP VDD INT1, NMI Connect to VSS or VDD. AVDD Connect to VDD. VAREF Connect to VSS. AVSS AN0 to AN7 Connect to AVSS or AVDD. |
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