Hitachi H8S/2633 Hardware Manual page 375

Selection Method and Pin Functions

Switches as follows according to combinations of ICCR0 ICE bit of IIC0, SCR RE bit

of SCI1, and the P34DDR bit.

The SDA0 output format becomes NMOS open drain output, enabling direct bus

Pin function

Note: * Output type is NMOS push-pull. When P34ODR = 1, it becomes NMOS

Switches as follows according to combinations of ICCR1 ICE bit of IIC1, SCR TE bit

of SCI1 and the P33DDR bit.

The SCL1 output format becomes NMOS open drain output, enabling direct bus

Pin function

Note: * When P33ODR = 1, it becomes NMOS open drain output.

Switches as follows according to combinations of ICCR1 ICE bit of IIC1, SMR C/A

bit of SCI0, SCR CKE0 and CKE1 bits, and the P32DDR bit.

If using as an SDA1 input pin, always set SMR C/A bit of SCI0 and SCR CKE0 and

CKE1 bits to 0 without fail.

The SDA1 output format becomes NMOS open drain output, enabling direct bus

Pin function

Note: * When P32ODR = 1, it becomes NMOS open drain output.

P34 input pin

open drain tray.

P33 input pin

P34 output pin* RxD1 input pin

P33 output pin* TxD1 output pin* SCL1 I/O pin*

SDA0 I/O pin