DS1831C View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated

Part Name

Description

MFG CO.

DS1831C

3.3V/2.5V Multi-Supply MicroMonitor

Dallas Semiconductor -> Maxim Integrated 

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TIMING DIAGRAM - NON MASKABLE INTERRUPT Figure 8

VIN >1.25 V

VTP(max) VTP

VTP(min)

VTP(min)

VTP VTP(max)

DS1831C/D/E

NMI

tIPD

tNMI

VOH

VOL

NON MASKABLE INTERRUPT CIRCUIT EXAMPLE Figure 9

VSENSE2

VSENSE1

VCC

R1

PBRST2.5V

PBRST3.3V

R3

R2

IN1

DS1831C

IN2

NMI1

NMI2

R4

GND

MPBRST

10 kΩ

Example: VSENSE1 = 11.50 volts trip point

VSENSE1 =

Therefore:

11.50V = R1 + 100 kΩ X 1.25V

100 kΩ

Resulting In: R1 = 820 kΩ

Repeat the same steps to solve for R3 and R4 with VSENSE2.

R1 + R2

R2

X 1.25V

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