UPD17062 datasheet(190/298 Pages) RENESAS

190 / 298 page

188

µPD17062

Example

Sample program

START:

; Program address 0000H

;

Reset processing

;

SKT1

BTM0CY

; Power failure detection

INITIAL

BACKUP:

;

Clock updating

MAIN

INITIAL:

;

Initialization

;

(

INITFLG NOT BTM0ZX, NOT BTM0CK2, NOT BTM0CK1, BTM0CK0

; Built-in macro

; Sets timer carry FF set time to 5 ms.

MAIN:

SKT1

BTM0CY

MAIN

Clock updating

Operation example

5 V

0 V

VDD

Timer carry FF

set pulse

50 ms

$ Power failure detection

$ Power failure

detection

CE reset

When the processing time

# + % is too long, a

CE reset is applied.

When the processing time

# + & is 100 ms or longer,

a CE reset is applied midway

through processing

(

CE reset may be applied immediately, depending on the timer carry

FF set time switching timing. When

( is executed before &,

power failure processing

& may not be executed.

UPD17062 Datasheet(PDF) 190 Page - Renesas Technology Corp

UPD17062 Datasheet(HTML) 190 Page - Renesas Technology Corp

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