MSFIPS datasheet(4/8 Pages) MSI

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FIPS-140 Level 4+ Security Supervisor

Data Sheet

5/2011

1 M

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Pin Description

MODE Selects 3.3V or 5.0 VDC operation.

When MODE

is at Logic “1” 3.3V

thresholds are selected, When MODE is

at Logic “0”, 5.0VDC is selected.

VBAT

Positive Battery Input,

VBG

Bandgap Voltage Output

SAO

Security Alarm Output Not

VDDI

Positive System Supply;

For 5V

Operation Typically 5.0 VDC

Set Reset Voltage:

Tertiary Control

VTL

Temperature Low set Input

VTH Temperature High set input

BLO Battery Low Voltage Indicator.

When

High, Battery is below 2.4V

10.

PFI

Power Failure Input Sense

11.

PFO

Power Failure Output:

Output high

when power is absent

12.

VSS

Negative Supply;

Typically 0.0 VDC

13. MR Master Reset Not Input

14 IP1

Tamper Switch Polarity Input 1

When tied to logic “1”, Tamper switch

logic is inverted (uses NO switch).

NC switch when logic “0”.

15. IN1 Tamper Switch Input 1

16. IP2

Tamper Switch Polarity Input 2

When tied to logic “1”, Tamper switch

logic is inverted (uses NO switch).

NC switch when logic “0”.

17. IN2

Tamper Switch Input 2

18. TOUT Temperature Sensor Output

IP3

Tamper Switch Polarity Input 3

When tied to logic “1”, Tamper

switch logic is inverted (uses NO

switch).

NC switch when logic “0”.

20.

IN3

Tamper Switch Input 3

21.

IN4

Tamper Switch Positive Input 4

22.

RST

Voltage Qualified Reset Not Output

23 VDDSW Power Switch Indicator:

When

High, Battery backup is in use

24.

VDDO

Positive Power Supply Output

Typically 5 VDC for 5V operation

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