HD6432633 Datasheet, PDF (440/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

Pin
P31/RxD0/
IrRxD
P30/TxD0/
IrTxD
Selection Method and Pin Functions
Switches as follows according to combinations of SCR RE bit of SCI0 and the
P31DDR bit.
RE
0
1
P31DDR
0
1
—
Pin function P31 input pin P31 output pin*
RxD0/IrRxD input pin
Note: * When P31ODR = 1, it becomes NMOS open drain output.
Switches as follows according to combinations of SCR TE bit of SCI0 and the
P30DDR bit.
TE
0
1
P30DDR
0
1
—
Pin function P30 input pin P30 output pin*
TxD0/IrTxD output pin*
Note: * When P30ODR = 1, it becomes NMOS open drain output.
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