1

®

FN8116.0

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

1-888-INTERSIL or 1-888-352-6832

Copyright Intersil Americas Inc. 2005. All Rights Reserved

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

X40410, X40411, X40414, X40415

4kbit EEPROM

Dual Voltage Monitor with Integrated CPU

Supervisor

FEATURES

• Dual voltage detection and reset assertion

—Standard reset threshold settings

See Selection table on page 2.

—Adjust low voltage reset threshold voltages

using special programming sequence

—Monitor three voltages or detect power fail

• Independent Core Voltage Monitor (V2MON)

• Fault detection register

• Selectable power-on reset timeout (0.05s,

0.2s, 0.4s, 0.8s)

• Selectable watchdog timer interval (25ms,

200ms,1.4s, off)

• Low power CMOS

—25µA typical standby current, watchdog on

—6µA typical standby current, watchdog off

• 4Kbits of EEPROM

—16 byte page write mode

—5ms write cycle time (typical)

• Built-in inadvertent write protection

—Power-up/power-down protection circuitry

—Block lock protect none or 1/2 of EEPROM

• 400kHz 2-wire interface

• 2.7V to 5.5V power supply operation

• Available packages

—8-lead SOIC, TSSOP

• Monitor Voltages: 5V to 0.9V

• Memory Security

• Independent Core Voltage Monitor

APPLICATIONS

• Communication Equipment

—Routers, Hubs, Switches

—Disk Arrays, Network Storage

• Industrial Systems

—Process Control

—Intelligent Instrumentation

• Computer Systems

—Computers

—Network Servers

DESCRIPTION

The X40410/11/14/15 combines power-on reset con-

trol, watchdog timer, supply voltage supervision, and

tect serial EEPROM in one package. This combination

lowers system cost, reduces board space require-

ments, and increases reliability.

Applying voltage to VCC activates the power-on reset

circuit which holds RESET/RESET active for a period of

time. This allows the power supply and system oscilla-

BLOCK DIAGRAM

V2FAIL

WDO

RESET

RESET

X40410/14

X40411/15

Fault Detection

Register

Status

Register

EEPROM

Array

Data

Register

Command

Decode Test

& Control

Logic

Power-on,

Low Voltage

Reset

Generation

V2MON

SDA

SCL

(V1MON)

+

-

User Programmable

Threshold

Reset Logic

+

-

User Programmable

Watchdog Timer

and

Reset Logic

V2MON

*X40410/11= V2MON*

Data Sheet

March 28, 2005