HD6432138SW datasheet(291/1061 Pages) RENESAS

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Section 8 I/O Ports

Rev. 4.00 Jun 06, 2006 page 237 of 1004

REJ09B0301-0400

Table 8.20

Port 9 Pin Functions

Selection Method and Pin Functions

P97/

WAIT/SDA0

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

operating mode, bit WMS1 in WSCR, bit ICE in ICCR of IIC0, and bit P97DDR.

Operating

mode

Modes 1, 2, 3 (EXPE = 1)

Modes 2, 3 (EXPE = 0)

WMS1

—

ICE

—

P97DDR

——

—

Pin function

P97

input

P97

output

SDA0

I/O pin

WAIT

input

P97

input

P97

output

SDA0

I/O pin

In the H8S/2138 Group, when this pin is set as the P97 output pin, it is an

NMOS push-pull output. SDA0 is an NMOS open-drain output, and has direct

bus drive capability.

P96/

φ/EXCL

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

bit EXCLE in LPWRCR and bit P96DDR.

P96DDR

EXCLE

Pin function

P96 input pin

EXCL input pin

φ output pin

When this pin is used as the EXCL input pin, P96DDR should be cleared to 0.

P95/

AS/IOS/CS1 The pin function is switched as shown below according to the combination of

operating mode, bit IOSE in SYSCR, bit HI12E in SYSCR2, and bit P95DDR.

Operating

mode

Modes 1, 2, 3

(EXPE = 1)

Modes 2, 3 (EXPE = 0)

HI12E

—

P95DDR

—

IOSE

———

Pin function

output pin

IOS

output pin

P95

input pin

P95

output pin

CS1

input pin

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