SMS48GCR02 PDF预览

SMS48GCR02

更新时间: 2025-07-16 03:39:11
品牌 Logo 应用领域
SUMMIT 监控
页数 文件大小 规格书
16页 841K
描述
Quad Programmable Precision Supervisory Controller With Independent Resets

SMS48GCR02 数据手册

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SUMMIT  
SMS48  
MICROELECTRONICS, Inc.  
PRELIMINARY INFORMATION1 (SEELASTPAGE)  
Quad Programmable Precision Supervisory Controller With Independent  
Resets  
FEATURES  
INTRODUCTION  
The SMS48 is a highly programmable voltage supply  
controller and supervisory circuit designed specifically for  
advancedsystemsthatneedtomonitormultiplevoltages.  
TheSMS48canmonitorfourseparatevoltageswithoutthe  
need of any external voltage divider circuitry. This allevi-  
ates the need for factory-trimmed threshold voltages and  
theuseofexternalcomponentstoaccommodatedifferent  
supply voltages and tolerances.  
z Operational from any of four Voltage Monitoring  
Inputs  
z FourIndependentProgrammableResetOutputs  
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  
z Programmable Reset Pulse Width  
z FaultStatusRegister  
The SMS48 has four programmable independant reset  
outputstocontroldifferentdevicesforvaryingresetcondi-  
tions such as UV, OV, watchdog and user pushbutton  
applications.  
APPLICATIONS  
The SMS48 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  
areuseraccessiblethroughanindustrystandardI2Cserial  
interface.  
z Desktop/Notebook/TabletComputers  
z Multi-voltageSystems  
z Telecom/NetworkServers  
z PortableBattery-poweredEquipment  
z Set-topBoxes  
Programmingofconfiguration, controlandcalibrationval-  
ues by the user is simplified with the SMX3200 interface  
adapterandWindowsGUIsoftwareobtainablefromSum-  
mit Microelectronics.  
z Data-storageEquipment  
SIMPLIFIED APPLICATION DRAWING  
2
I C  
Vpullup (0 to +12V)  
7
6
9
10  
SCL  
SDA  
A2 A1  
16  
2
3.3V  
2.5V  
1.8V  
1.2V  
V
V
V
V
11  
0
1
2
3
uP/DSP  
ASIC/FPGA  
Logic  
RESET#0  
Monitored  
Supplies  
3
14  
4
5
RESET#1  
RESET#2  
SMS48  
1
RESET#  
From uP  
MR#  
WLDI  
GND  
15  
13  
RESET#3  
LCD  
VDD_CAP  
12  
8
0.1µF  
Figure 1 - Precision Quad Power Supply Monitor can monitor any voltage over the range of 0.6V to 5.6V.  
One of the four supplies must be above 2.7V to power the SMS48.  
©SUMMIT MICROELECTRONICS, Inc., 2005 • 1717 Fox Dr. • San Jose, CA 95131 • Phone 408-436-9890 • FAX 408-436-9897 •  
www.summitmicro.com  
2088 1.1 04/10/05  
1
Characteristics subject to change without notice  

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