Hitachi H8S/2633 Hardware Manual page 1127

: Write to P3DDR

: Write to P3DR

: Write to P3ODR

: Read port 3

: Read P3ODR

Figure C-2 (f) Port 3 Block Diagram (Pin P35)

Notes: 1. Priority order: IIC output > Serial clock output > DR output

2. Output enable signal

3. Open drain control signal

Serial clock output

Serial clock output

Serial clock input

Serial clock input

IIC0 output enable

Interrupt controller

IRQ5 interrupt input