Datasheet > SMS45GR05

SMS45GR05

更新时间： 2025-08-10 03:03:55

品牌	Logo	应用领域
SUMMIT		存储监控控制器
页数	文件大小	规格书
20页	985K
描述
Quad Programmable Precision Cascade Sequencer and Supervisory Controller with 4k-Bit Nonvolatile Memory

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SMS45GR05 数据手册

SUMMIT

SMS45

MICROELECTRONICS, Inc.

PRELIMINARY INFORMATION¹(SEELASTPAGE)

Quad Programmable Precision Cascade Sequencer and Supervisory

Controller with 4k-Bit Nonvolatile Memory

FEATURES

INTRODUCTION

The SMS45 is a nonvolatile user-programmable voltage

supply cascade sequencer and supervisory circuit de-

signed specifically for advanced systems that need to

monitor multiple voltages. The SMS45 can monitor four

separatevoltageswithouttheneedofanyexternalvoltage

divider circuitry unlike other devices that need factory-

trimmed threshold voltages and external components to

accommodate different supply voltages and tolerances.

z Operational from any of four Voltage Monitoring

Inputs

z ProgrammablePower-upCascadeSequencing

z Programmability allows monitoring any voltage

between 0.6V and 5.6V with no external

components

z Programmable 5mV steps in the low range

z ProgrammableWatchdogTimer

TheSMS45canalsobeusedtoenableDC/DCconverters

orLDOstoprovideaclosedloopcascadingofthesupplies

duringpower-up.

z Programmable Reset Pulse Width

z ProgrammableNonvolatileCombinatorialLogic

forgenerationofReset

z FaultStatusRegister

The SMS45 watchdog timer has a user programmable

time-out period and it can be placed in an idle mode for

system initialization or system debug. All of the functions

areuseraccessiblethroughanindustrystandardI²C2-wire

serial interface.

z 4k-BitNonvolatileGeneralPurposeMemory

APPLICATIONS

z Desktop/Notebook/TabletComputers

z Multi-voltageSystems

Programming of configuration, control and calibration

valuesbytheuserissimplifiedwiththeSMX3200interface

adapterandWindowsGUIsoftwareobtainablefromSum-

mit Microelectronics.

z Telecom/NetworkServers

z PortableBattery-poweredEquipment

z Set-topBoxes

z Data-storageEquipment

SIMPLIFIED APPLICATION DRAWING

I C

SCL

PUP#1

SDA

A2 A1

VDD_CAP

DC-DC

3.3V

2.5V

1.8V

0.1µF

PUP#2

PUP#3

DC-DC

SMS45

MR#

WLDI

GND

Reset#

LDO

RESET#

Applications Schematic using the SMS45 Controller to provide closed loop power-up cascade sequenc-

ingandsupervisoryfunctions.

NOTE: THIS IS AN APPLICATIONS EXAMPLE ONLY. SOME PINS, COMPONENTS AND VALUES ARE NOT SHOWN.

Characteristics subject to change without notice

• 1717 Fox Dr. • San Jose, CA 95131 • Phone 408-436-9890 • FAX 408-436-9897 •

www.summitmicro.com

2079 1.2 05/24/04

12 3 4 5 6 7...20

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