Datasheet

Section 8 I/O Ports
Rev.7.00 Feb. 14, 2007 page 250 of 1108
REJ09B0089-0700
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 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 0 1 —
Pin function P32 input pin 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 0 1 —
Pin function P31 input pin 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 0 1 —
Pin function P30 input pin P30 output pin
*
TxD0 output pin
Note: * When P30ODR = 1, the pin becomes an NMOS open-drain output.