H8SX1663 datasheet(513/1158 Pages) RENESAS

tên linh kiện	H8SX1663

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

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Section 9 I/O Ports

Rev.1.00 Jun. 07, 2006 Page 461 of 1102

REJ09B0294-0100

(7) PA1/

BACK/(RD/WR)

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

EXPE bit, bus controller register, port function control register (PFCR), and the PA1DDR bit

settings.

Setting

Bus Controller

I/O Port

Module Name

Pin Function

BACK_OE

Byte control

SRAM

Selection

(RD/

WR)_OE

PA1DDR

BACK output *



Bus controller

RD/

WR output *



PA1 output

I/O port

PA1 input

(initial setting)

Note:

Valid in external extended mode (EXPE = 1)

(8) PA0/

BREQO/BS-A

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

EXPE bit, bus controller register, port function control register (PFCR), and the PA0DDR bit

settings.

Setting

I/O Port

Bus Controller

I/O Port

Module Name

Pin Function

BSA_OE

BREQO_OE

PA0DDR

BS-A output*



Bus controller

BREQO output*



PA0 output

I/O port

PA0 input

(initial setting)

Note:

Valid in external extended mode (EXPE = 1)

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