H8SXSLASH1663M datasheet(670/1504 Pages) RENESAS

tên linh kiện	H8SX/1663M

Giải thích chi tiết về linh kiện	Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series

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Section 13 I/O Ports

Rev. 2.00 Sep. 24, 2008 Page 638 of 1468

REJ09B0412-0200

(3)

PF5/A21

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

EXPE bit, the port function control register (PFCR), and the PF5DDR bit settings.

Setting

I/O Port

Module Name

Pin Function

A21_OE

PF5DDR

Bus controller

A21 output*



PF5 output

I/O port

PF5 input

(initial value)

Note:

Valid in external extended mode (EXPE = 1)

(4)

PF4/A20

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

EXPE bit, the port function control register (PFCR), and the PF4DDR bit settings.

Setting

I/O Port

MCU

Operating Mode

Module Name

Pin Function

A20_OE

PF4DDR

On-chip ROM

disabled extended

mode

Bus controller

A20 output



Bus controller

A20 output*



PF4 output

Modes other than

on-chip ROM

disabled extended

mode

I/O port

PF4 input

(initial value)

Note:

Valid in external extended mode (EXPE = 1)

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