CHAPTER 2 PIN FUNCTIONSUser’s Manual U16899EJ2V0UD 412.3 Pin I/O Circuits and Recommended Connection of Unused PinsTable 2-2 shows the types of pin I/O circuits and the recommended connections of unused pins.Refer to Figure 2-1 for the configuration of the I/O circuit of each type.Table 2-2. Pin I/O Circuit Types (1/2)Pin Name I/O Circuit Type I/O Recommended Connection of Unused PinsP00/TI000P01/TI010/TO00P02/SO11NoteP03/SI11NoteP04/SCK11NoteP05/SSI11Note/TI001NoteP06/TI011Note/TO01NoteP10/SCK10/TxD0P11/SI10/RxD08-AP12/SO10P13/TxD65-AP14/RxD6 8-AP15/TOH0 5-AP16/TOH1/INTP5P17/TI50/TO50/FLMD18-AI/O Input: Independently connect to EV DD or EV SS via a resistor.Output: Leave open.P20/ANI0 to P27/ANI7 9-C Input Connect to EV DD or EV SS.P30/INTP1P31/INTP2(exceptμPD78F0138HD)Input: Independently connect to EV DD or EV SS via a resistor.Output: Leave open.P31/INTP2 (μPD78F0138HD) Connect to EV SS via a resistor.P32/INTP3P33/TI51/TO51/INTP48-AP40 to P43P50 to P535-AInput: Independently connect to EV DD or EV SS via a resistor.Output: Leave open.P60, P61 13-RP62, P63 13-WInput: Connect to EV SS.Output: Leave this pin open at low-level output after clearingthe output latch of the port to 0.P70/KR0 to P77/KR7P120/INTP08-AI/OInput: Independently connect to EV DD or EV SS via a resistor.Output: Leave open.P130 3-C Output Leave open.P140/PCL/INTP6P141/BUZ/INTP78-A I/O Input: Independently connect to EV DD or EV SS via a resistor.Output: Leave open.Note SO11, SI11, SCK11, SSI11, TI001, TI011, and TO01 are available only in theμPD78F0133H, 78F0134H,78F0136H, 78F0138H, and 78F0138HD.
