7733 datasheet(623/940 Pages) RENESAS

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7733 Datasheet(PDF) 623 Page - Renesas Technology Corp

Part #	7733

Description	16-BIT SINGLE-CHIP MICROCOMPUTER

PDF	940 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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623 / 940 page

7733 Group User’s Manual

21-75

APPENDIX

Interrupt

To solve this problem, make sure that, by software, the execution of a routine where a certain

interrupt request should not be accepted starts after the change of the interrupt level is completed.

The following lists a sample program.

[Sample program]

After an instruction which writes value “0002” to the interrupt priority level selection bits, fill the

instruction queue buffer with several NOP instructions and make the next instruction not to be ex-

ecuted until the writing is completed.

CLB #07H, XXXIC ; The interrupt priority level selection bits are set to “0002.”

NOP

;

NOP

;

NOP

;

LDA A,DATA

; The first instruction of a routine where a certain interrupt

request should not be accepted

(2/2)

Appendix 9. Q & A

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