H8S-2633 Datasheet, PDF (459/1487 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer

Section 10A I/O Ports (H8S/2633, H8S/2632, H8S/2631, H8S/2633R)
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
Pin function
0
1
P30 input pin P30 output pin^*
—
TxD0/IrTxD output pin^*
Note: * When P30ODR = 1, it becomes NMOS open drain output.
Rev. 5.00 Mar 28, 2005 page 397 of 1422
REJ09B0234-0500