M16C User Manual.pdf

Appendix 3 Setting register for pin function selectedMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERPinnameP 71/RXD2/TA0IN/TB5IN/SCLP in No.29(FP)27 (GP)Function selectionSetting register1,3EFh6,3FDh7,382h6,382h4,396h7,35Dh0,377h3,378hRemarksTA0INI Gatefunction level input0 X 0 0 1 0 0 X 83TA0INI Countsource input0 X 0 0 X 0 0 X 83TA0INI Externaltrigger input0 X 0 0 1 0 0 X 83TB5INI Countsource input0 0 X X X 1 X 0 95SCLO IIC clock output0 0 X X X 0 1 0 141SCLI IIC clock input0 0 X X X 0 1 1 141RXD2I SerialI/O data input0 0 X X X 0 0 X 1 113P71I Portinput (No pulled high)0 0 X X X 0 0 X 167P71I Portinput (Pulled high)0 1 X X X 0 0 X 167P71O Portoutput1 X X X X 0 0 X 167Remark 1 : Set serial I/O enabled by serial I/O mode select bit of UART2 transmit/receive mode register.1,3EFhPortP71 direction register1726,3FDhP70to P73 pull-up control register1747,382hBit7 of one-shot start flag876,382hBit6 of one-shot start flag874,396hBit4 of timer A0 mode register857,35DhEventclock select bit of timer B5 mode register950,377hIIC mode select bit1413,378hInternal/external select bit131PagePinnameP 70/TXD2/TA0OUT/SDAP in No.30(FP)28 (GP)Function selectionSetting register0,3EFh6,3FDh4,396h2,396h0,377h6,376hRemarksTA0OUTO PulseoutputX X X 1 0 X 1 83TA0OUTI Up/downpolarity select input0 X 1 0 0 X 83TXD2O SerialI/O data outputX X X X 0 X 2,3 113SDAI IIC data input0 0 0 0 1 1 141SDAO IIC data output0 0 0 0 1 0 141P70I Portinput (No pulled high)0 0 0 0 0 X 167P70I Portinput (Pulled high)0 1 0 0 0 X 167P70O Portoutput1 X 0 0 0 X 167Remark 1: Can not be use when processing two-phase pulse signal.Remark 2: Set serial I/O enabled by serial I/O mode select bit of UART2 transmit/receive mode register.Remark 3: N channel open-drain output.0,3EFhPortP70 direction register1726,3FDhP70to P73 pull-up control register1744,396hBit4 of timer A0 mode register852,396hBit2 of timer A0 mode register850,377hIIC mode select bit1416,376hSDA output stop bit145Page579