H8SSLASH2224 datasheet(405/1071 Pages) RENESAS

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Section 10 I/O Ports

Rev. 5.00 Aug 08, 2006 page 319 of 982

REJ09B0054-0500

• P35/SCK1/SCL0/IRQ5

The pin functions are switched as shown below according to the combination of the ICE bit*3

in ICCR_0 of IIC_0, the C/

A bit in SMR_1 of SCI_1, CKE0 and CKE1 bits in SCR_1, and the

P35DDR bit. To use this port as SCL0 I/O pin, clear the C/

A bit, CKE1 bit, and CKE0 bit to 0.

The SCL0 functions as NMOS open drain output and the pin can drive bus directly. When this

pin is specified as the P35 output pin or SCK1 output pin, it functions as NMOS push/pull

output.*4

ICE*

CKE1



CKE0



P35DDR





P35 input

P35 output

pin*

SCK1 output

pin*

SCK1 output

pin*

SCK1 input

SCL0 I/O

pin*

Pin functions

IRQ5 Input pin*2

Notes: 1. When the P35ODR is set to 1, it functions as NMOS open drain output. When the

P35ODR is cleared to 0, it functions as NMOS push/pull output.*

2. When this pin is used as an external interrupt pin, do not specify other functions.

3. Not available in the H8S/2237 Group and H8S/2227 Group.

4. It functions as CMOS output in the H8S/2237 Group and H8S/2227 Group.

• P34/RxD1/SDA0

The pin functions are switched as shown below according to the combination of the ICE bit*2

in ICCR_0 of IIC_0, the RE bit in SCR_1 of SCI_1, and the P34DDR bit. When this pin is

specified as P34 output pin, it functions as NMOS push-pull output.*3 The SDA0 also

functions as NMOS open drain outputs and can drive bus directly.

ICE*2



P34DDR



Pin functions

P34 input pin

P34 output pin*

RxD1 input pin

SDA0 I/O pin*

Notes: 1. When P34ODR is set to 1, it functions as NMOS open drain output. When the P34ODR

is cleared to 0, it functions as NMOS push/pull output.*

2. Not available in theH8S/2237 Group and H8S/2227 Group.

3. It functions as CMOS output in the H8S/2237 Group and H8S/2227 Group.

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