7643 datasheet(142/424 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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142 / 424 page

Rev.2.00

Aug 28, 2006

page 21 of 202

7643 Group

REJ09B0133-0200

APPLICATION

2.2 Timer

Fig. 2.2.14 Control procedure

RESET

SEI

CCR

CPMA

P5D

T123M

ICONB

CLI

3F16

(address 1F16), bit7

(address 0016)

(address 1616), bit1

(address 1716), bit1

(address 2916)

(address 2416)

(address 0616), bit6

T123M

(address 2916), bit1

(address 2416)

3F16

T123M(address 2916), bit1

Main processing

Initialization

•All interrupts disabled

•

φ = f(XIN)/2

Output unit

Piezoelectric buzzer request ?

Yes

Stop of piezoelectric buzzer

output

Start of piezoelectric buzzer output

•Timer 1 interrupt disabled

•TOUT output stopped; Buzzer output stopped

•Port P51/TOUT/XCOUT state setting at buzzer output

stopped; “H” level output

•Interrupts enabled

•Processing buzzer request, generated during main

processing, in output unit

000X1XXX2

010XX0002

7643 Datasheet(PDF) 142 Page - Renesas Technology Corp

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