M32CSLASH86 datasheet(255/505 Pages) RENESAS

255 / 505 page

Page 232

17. Serial I/O (Special Function)

)

(

Table 17.36 Pin Settings in SIM Mode (1)

Port

Function

Setting

PS0 Register

PD6 Register

P62

RxD0 input

PS0_2=0

PD6_2=0

P63

TxD0 output

PS0_3=1

–

P66

RxD1 input

PS0_6=0

PD6_6=0

P67

TxD1 output

PS0_7=1

–

Table 17.37 Pin Settings (2)

Port

Function

Setting

PS1 Register

PSL1 Register

PSC Register

PD7 Register

P70(1)

TxD2 output

PS1_0=1

PSL1_0=0

PSC_0=0

–

P71(1)

RxD2 input

PS1_1=0

––

PD7_1=0

NOTES:

1. P70 and P71 are ports for the N-channel open drain output.

Table 17.38 Pin Settings (3)

Port

Function

Setting

PS3 Register(1)

PSL3 Register

PSC3 Register

PD9 Register(1)

P91

RxD3 input

PS3_1=0

–

PD9_1=0

P92

TxD3 output

PS3_2=1

PSL3_2=0

–

P96

TxD4 output

PS3_6=1

–

PSC3_6=0

–

P97

RxD4 input

PS3_7=0

–

PD9_7=0

NOTES:

1. Set the PD9 and PS3 registers immediately after the PRC2 bit in the PRCR register is set to "1" (write enable). Do

not generate an interrupt or a DMA transfer between the instruction to set to the PRC2 bit to "1" and the instruction to

set the PD9 and PS3 registers.

Figure 17.29 shows an example of a SIM interface operation. Figure 17.30 shows an example of a SIM

interface connection. Connect the TxDi pin to the RxDi pin for a pull-up.

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