PD17012_15 Datasheet, PDF(290/320 Page) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

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PD17012_15 Datasheet, PDF (290/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

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ÂµPD17012, 17P012

Example Program to detect power failure by RAM judgement method

M012

MEM

M034

MEM

M056

MEM

M107

MEM

M128

MEM

M16F

MEM

DATA0 DAT

DATA1 DAT

DATA2 DAT

DATA3 DAT

DATA4 DAT

DATA5 DAT

0.12H

0.34H

0.56H

1.07H

1.28H

1.6FH

1010B

0101B

0110B

1001B

1100B

0011B

START:

SET2

SUB

SUB

SUB

BANK1

SUB

SUB

SUB

BANK0

SKF1

BR

;INITIAL:

CMP, Z

M012, #DATA0

M034, #DATA1

M056, #DATA2

M107, #DATA3

M128, #DATA4

M16F, #DATA5

Z

BACKUP

Initial processing

; If M012 = DATA0 and

; M034 = DATA1 and

; M056 = DATA2 and

; M107 = DATA3 and

; M128 = DATA4 and

; M16F = DATA5,

; branches to BACKUP

MOV

MOV

MOV

BANK1

MOV

MOV

MOV

BR

BACKUP:

M012, #DATA0

M034, #DATA1

M056, #DATA2

M107, #DATA3

M128, #DATA4

M16F, #DATA5

MAIN

Backup processing

MAIN:

Main processing

288

Data Sheet U10101EJ4V0DS

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