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SMS48GCR00 Datasheet(PDF) 1 Page - Summit Microelectronics, Inc. |
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SMS48GCR00 Datasheet(HTML) 1 Page - Summit Microelectronics, Inc. |
1 / 16 page 1 Characteristics subject to change without notice 2088 1.1 04/10/05 SMS48 SUMMIT MICROELECTRONICS, Inc. ©SUMMIT MICROELECTRONICS, Inc., 2005 • 1717 Fox Dr. • San Jose, CA 95131 • Phone 408-436-9890 • FAX 408-436-9897 • www.summitmicro.com PRELIMINARY INFORMATION 1 (SEE LAST PAGE) Operational from any of four Voltage Monitoring Inputs Four Independent Programmable Reset Outputs Programmability allows monitoring any voltage between 0.6V and 5.6V with no external components Programmable 5mV steps in the low range Programmable Watchdog Timer Programmable Reset Pulse Width Fault Status Register APPLICATIONS Desktop/Notebook/TabletComputers Multi-voltage Systems Telecom/Network Servers Portable Battery-powered Equipment Set-top Boxes Data-storage Equipment 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 advanced systems that need to monitor multiple voltages. The SMS48 can monitor four separate voltages without the need of any external voltage divider circuitry. This allevi- ates the need for factory-trimmed threshold voltages and the use of external components to accommodate different supply voltages and tolerances. The SMS48 has four programmable independant reset outputs to control different devices for varying reset condi- tions such as UV, OV, watchdog and user pushbutton 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 are user accessible through an industry standard I2C serial interface. Programming of configuration, control and calibration val- ues by the user is simplified with the SMX3200 interface adapter and Windows GUI software obtainable from Sum- mit Microelectronics. SIMPLIFIED APPLICATION DRAWING 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. V0 V1 V2 V3 RESET#0 RESET#3 VDD_CAP RESET#1 RESET#2 I2C 3.3V 2.5V 1.8V 1.2V SMS48 A2 A1 SDA SCL 7 6 9 10 1 16 2 3 14 MR# Monitored Supplies 15 WLDI GND 8 13 12 11 5 4 0.1µF Vpullup (0 to +12V) uP/DSP ASIC/FPGA Logic LCD From uP RESET# |
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