X40035SC View Datasheet(PDF) - Intersil

Part Name

Description

MFG CO.

X40035SC

Triple Voltage Monitor with Integrated CPU Supervisor

Intersil 

X40030, X40031, X40034, X40035

A manual reset input provides debounce circuitry for

minimum reset component count.

The Watchdog Timer provides an independent protection

mechanism for microcontrollers. When the microcontroller

fails to restart a timer within a selectable time out interval,

the device activates the WDO signal. The user selects the

interval from three preset values. Once selected, the interval

does not change, even after cycling the power.

TABLE 1. SELECTION TABLE

DEVICE

EXPECTED SYSTEM

VOLTAGES

VTRIP1

(V)

VTRIP2

(V)

X40030, X40031

2.0 to 4.75*

1.70 to 4.75

X40030A, X40031A

5V; 3V or 3.3V; 1.8V

4.55 to 4.65*

2.85 to 2.95

X40030B, X40031B

5V; 3V; 1.8V

4.35 to 4.45*

2.55 to 2.65

X40030C, X40031C

3.3V; 2.5V; 1.8V

2.95 to 3.05*

2.15 to 2.25

X40034, X40035

2.0 to 4.75*

0.90 to 3.50

X40034A, X40035A

5V; 3.3V; 1.5V

4.55 to 4.65*

1.25 to 1.35

X40034B, X40035B

5V; 3V or 3.3V; 1.5V

4.55 to 4.65*

1.25 to 1.35

X40034C, X40035C

5V; 3V or 3.3V; 1.2V

4.55 to 4.65*

0.95 to 1.05

*Voltage monitor requires VCC to operate. Others are independent of VCC

VTRIP3

(V)

1.70 to 4.75

1.65 to 1.75

1.65 to 1.75

1.65 to 1.75

1.70 to 4.75

3.05 to 3.15

2.85 to 2.95

2.85 to 2.95

POR

(SYSTEM)

RESET = X40030

RESET = X40031

RESET = X40030

RESET = X40031

5

FN8114.2

August 25, 2008

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