X40031C Просмотр технического описания (PDF) - Intersil

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X40031C

Triple Voltage Monitor with Integrated CPU Supervisor

Intersil 

X40030, X40031, X40034, X40035

VTRIPX PROGRAMMING

NO

DESIRED

VTRIPX<

PRESENT VALUE

YES

EXECUTE

VTRIPX RESET SEQUENCE

NEW VX APPLIED =

OLD VX APPLIED + | ERROR |

NO

SET VX = DESIRED VTRIPX

EXECUTE

SET HIGHER VX SEQUENCE

APPLY VCC AND VOLTAGE

> DESIRED VTRIPX TO VX

DECREASE VX

VX = VCC, VXMON

NOTE: X = 1, 2, 3

LET: MDE = MAXIMUM DESIRED ERROR

MDE+

DESIRED VALUE

MDE–

ACCEPTABLE

ERROR RANGE

ERROR = ACTUAL - DESIRED

NEW VX APPLIED =

OLD VX APPLIED - | ERROR |

EXECUTE RESET VTRIPX

SEQUENCE

OUTPUT SWITCHES?

ERROR < MDE–

YES

ACTUAL VTRIPX -

DESIRED VTRIPX

ERROR > MDE+

| ERROR | < | MDE |

DONE

FIGURE 6. VTRIPX SET/RESET SEQUENCE (X = 1, 2, 3)

10

FN8114.2

August 25, 2008

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