H8S2245 datasheet(275/818 Pages) RENESAS

275 / 818 page

Section 8 I/O Ports

Rev.3.00 Mar. 26, 2007 Page 233 of 772

REJ09B0355-0300

Selection Method and Pin Functions

3/RxD1

The pin function is switched as shown below according to the combination of

bit RE in the SCI1 SCR, and bit P33DDR.

P33DDR

—

Pin function

3 input pin

3 output pin*

RxD1 input pin

Note:

When P33ODR = 1, the pin becomes an NMOS open drain output.

2/RxD0

The pin function is switched as shown below according to the combination of

bit RE in the SCI0 SCR, and bit P32DDR.

P32DDR

—

Pin function

2 input pin

2 output pin*

RxD0 input pin

Note:

When P32ODR = 1, the pin becomes an NMOS open drain output.

1/TxD1

The pin function is switched as shown below according to the combination of

bit TE in the SCI1 SCR, and bit P31DDR.

P31DDR

—

Pin function

1 input pin

1 output pin*

TxD1 output pin*

Note:

When P31ODR = 1, the pin becomes an NMOS open drain output.

0/TxD0

The pin function is switched as shown below according to the combination of

bit TE in the SCI0 SCR, and bit P30DDR.

P30DDR

—

Pin function

0 input pin

0 output pin*

TxD0 output pin*

Note:

When P30ODR = 1, the pin becomes an NMOS open drain output.

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