M32C80 Datasheet, PDF (235/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
16. Serial I/O (Special Function)
Table 16.36 Pin Settings in SIM Mode (1)
Port
P62
P63
P66
P67
Function
RxD0 input
TxD0 output
RxD1 input
TxD1 output
Setting
PS0 Register
PD6 Register
PS0_2=0
PD6_2=0
PS0_3=1
–
PS0_6=0
PD6_6=0
PS0_7=1
–
Table 16.37 Pin Settings (2)
Port
Function
Setting
PS1 Register
PSL1 Register PSC Register
P70(1)
TxD2 output
PS1_0=1
PSL1_0=0
PSC_0=0
P71(1)
RxD2 input
PS1_1=0
–
–
NOTE:
1. P70 and P71 are ports for the N-channel open drain output.
PD7 Register
–
PD7_1=0
Table 16.38 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
NOTE:
1. Set the PD9 and PS3 registers immediately after the PRC2 bit in the PRCR register is set to "1" (write enabled).
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 16.29 shows an example of a SIM interface operation. Figure 16.30 shows an example of a SIM
interface connection. Connect the TxDi pin to the RxDi pin for a pull-up.
Rev. 1.00 Nov. 01, 2005 Page 216 of 330
REJ09B0271-0100