Renesas H8S/2319 series Hardware Manual page 276

Pin Selection Method and Pin Functions
P33/RxD1 The pin function is switched as shown below according to the combination of
bit RE in the SCI1 SCR, and bit P33DDR.
RE
P33DDR
Pin function
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
P32DDR
Pin function
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
P31DDR
Pin function
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
P30DDR
Pin function
Note: * When P30ODR = 1, the pin becomes an NMOS open-drain output.
Rev. 5.00, 12/03, page 246 of 1088
0
0
P33 output pin *
P33 input pin
0
0
P32 output pin *
P32 input pin
0
0
P31 output pin *
P31 input pin
0
0
P30 output pin *
P30 input pin
1
1 —
RxD1 input pin
1
1 —
RxD0 input pin
1
1 —
TxD1 output pin
1
1 —
TxD0 output pin