H8SXSLASH1663R datasheet(659/1504 Pages) RENESAS

部件名	H8SX/1663R

功能描述	Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series

PDF	1504 Pages

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制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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659 / 1504 page

Section 13 I/O Ports

Rev. 2.00 Sep. 24, 2008 Page 627 of 1468

REJ09B0412-0200

(4)

PA4/

LHWR/LUB

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

the EXPE bit, the bus controller register, the port function control register (PFCR), and the

PA4DDR bit settings.

Setting

Bus Controller

I/O Port

Module Name

Pin Function

LUB_OE*2

LHWR_OE*2

PA4DDR

LUB output*1



Bus controller

LHWR output*1

(initial value E)



PA4 output

I/O port

PA4 input

(initial value S)

[Legend]

Initial value E:

Initial value in external extended mode

Initial value S:

Initial value in single-chip mode

Notes: 1. Valid in external extended mode (EXPE = 1)

2. When the byte control SRAM space is accessed while the byte control SRAM space is

specified or while LHWROE = 1, this pin functions as the

LUB output; otherwise, the

LHWR output.

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