Rainbow-electronics MAX6869 Manuel d'utilisateur télécharger pdf (Page 10)

MAX6854–MAX6869

Nanopower µP Supervisory Circuits with

Optional Manual Reset, Watchdog Timer

10 ______________________________________________________________________________________

MAX6854–

MAX6869

WDI

(MAX6864–MAX6869)

RESET

(MAX6854/MAX6856–MAX6861/

MAX6863/MAX6864/MAX6866/

MAX6867/MAX6869)

(MAX6854/MAX6855/MAX6856,

MAX6861–MAX6869)

RESET

TIMEOUT

GENERATOR

RESET

(MAX6855/MAX6862/MAX6865/

MAX6868)

(MAX6861/MAX6862/MAX6863)

1.25V

10kΩ

WATCHDOG

TIMER

GND

WATCHDOG

TRANSITION

DETECTOR

Figure 1. Functional Diagram

RESET*

*RESET IS THE INVERSE OF RESET.

MRD

MPW

Figure 2. RESET Timing Relationship

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16 17

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Rainbow-electronics MAX6869 Manuel d'utilisateur Page 10