System

Regulator

0.1P ceramic

3.3V

GND

PFI

RESET

MR

PFO

RESET

INT

PP

+ 1

(

.

Raw Supply

(Battery)

Active Data

Line

WDI

RESET

3.3V

1.8

V

107k

332k

FAULT

(Normally High)

GND

PFI

PFO

RESET

Active Data Line

WDI

MR

GND

PFI

MR

PFO

RESET

RESET

3.3V

1.8V

107k

332k

3.3k

WDI

Active Data Line

LM3710, LM3711

www.ti.com

SNVS150E – NOVEMBER 2000 – REVISED MARCH 2013

Figure 15. Monitoring Two Supplies plus Manual Reset And Dataline

Figure 16. Monitoring Dual Supplies plus External Fault Input And Dataline

Note: MR input with its 1.225V nominal threshold, may monitor an additional supply voltage. An internal 56 k

Ω pull-up

resistor is included on this input.

Figure 17. Microprocessor Supervisor with Early Warning Detector

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Product Folder Links: LM3710 LM3711