M16C User Manual.pdf

Appendix 3 Setting register for pin function selectedMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERPinname P 67/TXD1P in No.31(FP)29 (GP)Function selection7,3EEh5,3FDhSetting registerRemarksTXD1O SerialI/O data outputX X 1,2 113P67I Portinput (No pulled high)0 0 167P67I Portinput (Pulled high)0 1 167P67O Portoutput1 X 167Remark 1: Set serial I/O enabled by serial I/O mode select bit of UART1 transmit/receive mode register.Remark 2: Can be selected CMOS output or N channel open-drain output.7,3EEhPortP67 direction register1725,3FDhP64to P67 pull-up control register174PagePinname P 66/RXD1P in No.32(FP)30 (GP)Function selection6,3EEh5,3FDhSetting registerRemarksRXD1I SerialI/O data input0 X 1 113P66I Portinput (No pulled high)0 0 167P66I Portinput (Pulled high)0 1 167P66O Portoutput1 X 167Remark 1: Set serial I/O enabled by serial I/O mode select bit of UART1 transmit/receive mode register.6,3EEhPortP66 direction register1725,3FDhP64to P67 pull-up control register174PagePinname P 65/CLK1P in No.33(FP)31 (GP)Function selection5,3EEh5,3FDh3,3A8hSetting registerRemarksCLK1I SerialI/O clock input0 X 1 1 113CLK1O SerialI/O clock outputX X 0 1,2 113P65I Portinput (No pulled high)0 0 X 167P65I Portinput (Pulled high)0 1 X 167P65O Portoutput1 X X 167Remark 1: Set serial I/O enabled by serial I/O mode select bit of UART1 transmit/receive mode register.Remark 2: It become I/O port when UART mode selected.6,3EEhPortP65 direction register1725,3FDhP64to P67 pull-up control register1743,3A8hInternal/externalclock select bit of UART1 transmit/receive mode register118Page580