Datasheet > X40420S14-B

X40420S14-B

更新时间： 2024-09-30 22:36:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		电池开关光电二极管监控
页数	文件大小	规格书
25页	382K
描述
Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch

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中文翻译

获取价格

数据手册

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X40420S14-B 数据手册

X40420, X40421

4kbit EEPROM

Data Sheet

March 28, 2005

FN8117.0

PRELIMINARY

• Memory Security

• Battery Switch Backup

Dual Voltage Monitor with Integrated CPU

Supervisor and System Battery Switch

• V

5mA to 50mA

OUT

FEATURES

APPLICATIONS

• Dual voltage detection and reset assertion

—Three standard reset threshold settings

(4.6V/2.9V, 4.6V/2.6V, 2.9V/1.6V)

• Communications Equipment

—Routers, Hubs, Switches

—Disk arrays

• Industrial Systems

—Process Control

—Intelligent Instrumentation

• Computer Systems

—Desktop Computers

—Network Servers

—V

Programmable down to 0.9V

TRIP2

—Adjust low voltage reset threshold voltages

using special programming sequence

—Reset signal valid to V = 1V

—Monitor two voltages or detect power fail

• Battery Switch Backup

• V

: 5mA to 50mA from V ; or 250µA from

OUT

BATT

X40420/21

• Fault detection register

Standard V_TRIP1Level Standard V_TRIP2Level Suffix

• Selectable power-on reset timeout

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

• Selectable watchdog timer interval

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

• Debounced manual reset input

• Low power CMOS

4.6V (+/-1%)

2.9V(+/-1.7%)

2.6V (+/-2%)

1.6V (+/-3%)

-A

-B

-C

See “Ordering Information” for more details

For Custom Settings, call Intersil.

—25µA typical standby current, watchdog on

—6µA typical standby current, watchdog off

—1µA typical battery current in backup mode

• 4Kbits of EEPROM

—16 byte page write mode

—Self-timed write cycle

—5ms write cycle time (typical)

• Built-in inadvertent write protection

—Power-up/power-down protection circuitry

—Block lock protect 0 or 1/2, of EEPROM

• 400kHz 2-wire interface

• 2.7V to 5.5V power supply operation

• Available packages

DESCRIPTION

The X40420/21 combines power-on reset control,

watchdog timer, supply voltage supervision, and sec-

ondary supervision, manual reset, and Block Lock

protect serial EEPROM in one package. This combi-

nation lowers system cost, reduces board space

requirements, and increases reliability.

™

Applying voltage to V

activates the power-on reset

circuit which holds RESET/RESET active for a period of

time. This allows the power supply and system oscilla-

tor to stabilize before the processor can execute code.

—14-lead SOIC, TSSOP

• •Monitor Voltages: 5V to 1.6V

BLOCK DIAGRAM

V_OUT

V2FAIL

WDO

V2MON

V_TRIP2

V2 Monitor

Logic

Watchdog

and

Reset Logic

Fault Detection

Data

SDA

V_OUT

Status

Command

Decode Test

& Control

EEPROM

Array

RESET

X40420

Logic

SCL

Power-on,

Manual Reset

Low Voltage

Reset

V_OUT

RESET

X40421

V_CC

(V1MON)

V_TRIP1

Generation

V_CCMonitor

Logic

BATT-ON

LOWLINE

System

Battery

V_OUT

Switch

V_BATT

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

1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

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

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中文翻译

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与X40420S14-B相关器件

型号	品牌	获取价格	描述	数据表
X40420S14-BT1	RENESAS	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14, 0.150 INCH, SOIC-14
X40420S14-C	INTERSIL	获取价格	Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch
X40420S14-C	RENESAS	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14, PLASTIC, SOIC-14
X40420S14-CT1	RENESAS	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14, 0.150 INCH, SOIC-14
X40420S14I-A	INTERSIL	获取价格	Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch
X40420S14I-A	RENESAS	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14, 0.150 INCH, SOIC-14
X40420S14I-B	INTERSIL	获取价格	Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch
X40420S14I-B	RENESAS	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14, PLASTIC, SOIC-14
X40420S14I-BT1	RENESAS	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14, 0.150 INCH, SOIC-14
X40420S14I-C	INTERSIL	获取价格	Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch

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