x40031v14z-bt1 Intersil Corporation, x40031v14z-bt1 Datasheet

x40031v14z-bt1

Manufacturer Part Number

x40031v14z-bt1

Description

Triple Voltage Monitor With Integrated Cpu Supervisor

Manufacturer

Intersil Corporation

Datasheet

1.X40031V14Z-BT1.pdf (24 pages)

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Triple Voltage Monitor with Integrated

CPU Supervisor

FEATURES

• Triple voltage detection and reset assertion

• Fault detection register

• Selectable power on reset timeout

• Selectable watchdog timer interval

• Debounced manual reset input

• Low power CMOS

• 400kHz 2-wire interface

• 2.7V to 5.5V power supply operation

• Available in 14 Ld SOIC, TSSOP packages

• Monitor voltages: 5V to 0.9V

• Independent core voltage monitor

• Pb-free plus anneal available (RoHS compliant)

APPLICATIONS

• Communication equipment

BLOCK DIAGRAM

—Standard reset threshold settings

—Adjust low voltage reset threshold voltages

—Reset signal valid to V

—Monitor three seperate voltages

(0.05s, 0.2s, 0.4s, 0.8s)

(25ms, 200ms, 1.4s or off)

—25µA typical standby current, watchdog on

—6µA typical standby current, watchdog off

—Routers, hubs, switches

—Disk arrays, network storage

see selection table on page 5.

using special programming sequence

(V1MON)

V3MON

V2MON

PRELIMINARY

SDA

SCL

Decode Test

Command

& Control

Logic

Data

= 1V

Data Sheet

Logic

Monitor

V3 Monitor

1-888-INTERSIL or 1-888-468-3774

Logic

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

V2 Monitor

Fault Detection

Logic

Status

TRIP1

X40030, X40031, X40034, X40035

• Industrial systems

• Computer systems

DESCRIPTION

The X40030, X40031, X40034, X40035 combine

power-on reset control, watchdog timer, supply voltage

supervision, second and third voltage supervision, and

manual reset, in one package. This combination lowers

system cost, reduces board space requirements, and

increases reliability.

Applying voltage to V

cuit which holds RESET/RESET active for a period of

time. This allows the power supply and system oscillator

to stabilize before the processor can execute code.

Low VCC detection circuitry protects the user’s system

from low voltage conditions, resetting the system when

VCC

RESET/RESET is active until VCC returns to proper

operating level and stabilizes. A second and third voltage

monitor circuit tracks the unregulated supply to provide a

power fail warning or monitors different power supply

voltage. Three common low voltage combinations are

available, however, Intersil’s unique circuits allows the

threshold for either voltage monitor to be reprogrammed

to meet specific system level requirements or to fine-tune

the threshold for applications requiring higher precision.

—Process control

—Intelligent instrumentation

—Computers

—Network servers

TRIP3

V2MON*

TRIP2

falls

All other trademarks mentioned are the property of their respective owners.

May 25, 2006

Manual Reset

Intersil (and design) is a registered trademark of Intersil Americas Inc.

Low Voltage

Reset Logic

Generation

Watchdog

Power on,

below

Reset

and

the

activates the power on reset cir-

minimum

VTRIP1

RESET

LOWLINE

X40030/34

X40031/35

FN8114.1

V3FAIL

V2FAIL

WDO

point.

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