D12320VF25V Datasheet, PDF (284/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 8 I/O Ports
Pin
P33/RxD1
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
bit RE in the SCI1 SCR, and bit P33DDR.
RE
0
1
P33DDR
0
1
—
Pin function
P33 input pin
P33 output pin^* RxD1 input pin
Note: * When P33ODR = 1, the pin becomes an NMOS open-drain output.
P32/RxD0
The pin function is switched as shown below according to the combination of
bit RE in the SCI0 SCR, and bit P32DDR.
RE
0
1
P32DDR
Pin function
0
P32 input pin
1
P32 output pin^*
—
RxD0 input pin
Note: * When P32ODR = 1, the pin becomes an NMOS open-drain output.
P31/TxD1
The pin function is switched as shown below according to the combination of
bit TE in the SCI1 SCR, and bit P31DDR.
TE
0
1
P31DDR
Pin function
0
P31 input pin
1
P31 output pin^*
—
TxD1 output pin
Note: * When P31ODR = 1, the pin becomes an NMOS open-drain output.
P30/TxD0
The pin function is switched as shown below according to the combination of
bit TE in the SCI0 SCR, and bit P30DDR.
TE
0
1
P30DDR
Pin function
0
P30 input pin
1
P30 output pin^*
—
TxD0 output pin
Note: * When P30ODR = 1, the pin becomes an NMOS open-drain output.
Rev.7.00 Feb. 14, 2007 page 250 of 1108
REJ09B0089-0700