7643 datasheet(155/424 Pages) RENESAS

Part #	7643

Description	8-BIT SINGLE-CHIP MICROCOMPUTER

PDF	424 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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155 / 424 page

Rev.2.00

Aug 28, 2006

page 34 of 202

7643 Group

REJ09B0133-0200

APPLICATION

2.3 Serial I/O

Fig. 2.3.16 Control procedure of SPI compatible mode in slave

q x: This bit is not used here. Set it to “0” or “1” arbitrarily.

IREQC (Address : 0416), bit3?

Initialization

SIOCON1

SIOCON2

IREQC

ICONC

(Address : 2B16)

(Address : 2C16)

(Address : 0416), bit3

(Address : 0716), bit3

00011XXX2

000111012

IREQC (Address : 0416), bit3

SIOSHT (Address : 2A16)

Transmi-

ssion data

•Serial I/O interrupt request bit set to “0”

•Serial I/O interrupt disabled

RESET

•Serial I/O set

CLI

•Transmission data write

(Do not set data during data reception.)

•Judgment of completion of receiving

1-byte data

•Transmission/Reception starts owing to “L” input

to P80/SRDY pin or shift clock input.

Slave Unit

Read out received data from SIOSHT

(Address : 2A16)

7643 Datasheet(PDF) 155 Page - Renesas Technology Corp