H8SSLASH2214 datasheet(363/936 Pages) RENESAS

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Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 303 of 872

REJ09B0189-0400

Pin Functions and Selection Method

P33/TxD1

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

SCR of SCI1 and bit P33DDR.

P33DDR

—

Pin function

P33 input

P33 output*

TxD1 output*

Note: * NMOS open-drain output when P33ODR = 1.

P32/SCK0/

IRQ4

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

A in

SMR of SCI0, bits CKE0 and CKE1 in SCR, and bit P32DDR.

CKE1

—

CKE0

—

P32DDR

—

Pin function

P32 input

P32 output*

SCK0

output*

SCK0

output*

SCK0 input

IRQ4 input*2

Notes: 1. NMOS open-drain output when P32ODR = 1.

2. When used as an external interrupt pin, do not use for another function.

P31/RxD0

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

SCR of SCI0 and bit P31DDR.

P31DDR

—

Pin function

P31 input

P31 output*

RxD0 input

Note: * NMOS open-drain output when P31ODR = 1.

P30/TxD0

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

SCR of SCI0 and bit P30DDR.

P30DDR

—

Pin function

P30 input

P30 output*

TxD0 output*

Note: * NMOS open-drain output when P30ODR = 1.

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