Hitachi H8S/2646 Hardware Manual page 1117

Hitachi 16-bit single-chip microcomputer h8s/2646 series

Table of Contents

: Write to P3DDR

: Write to P3DR

: Write to P3ODR

: Read port 3

: Read P3ODR

Figure C-3 (c) Port 3 Block Diagram (Pin P32)

Notes: *1 Priority order: 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

Interrupt controller

IRQ4 interrupt input