SUMMIT Microelectronics: Product Summary: SMS46 and SMS48  

PRELIMINARY INFORMATION ¹ 

SMS46 & SMS48

Quad Programmable Precision Supervisory Controller With Independent Resets (SMS46 with 4k-Bit Nonvolatile Memory)

FEATURES 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 4k-Bit Nonvolatile Memory (SMS46 only)

APPLICATIONS Desktop/Notebook/Tablet Computers Multi-voltage Systems Telecom/Network Servers Portable Battery-powered Equipment Set-top Boxes Data-storage Equipment

INTRODUCTION NOTE: The SMS48 does not contain user memory. The SMS46 and SMS48 are highly programmable voltage supply controller and supervisory circuits designed specifically for advanced systems that need to monitor multiple voltages. The SMS46/48 can monitor four separate voltages without the need of any external voltage divider circuitry. This alleviates the need for factory-trimmed threshold voltages and the use of external components to accommodate different supply voltages and tolerances. These units have four programmable independant reset outputs to control different devices for varying reset conditions such as UV, OV, watchdog and user pushbutton applications. The SMS46/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 values by the user is simplified with the SMX3200 interface adapter and Windows GUI software obtainable from Summit Microelectronics. [continued in the SMS46 PDF] [continued in the SMS48 PDF]

SMS46 ORDERING INFORMATION SMS48 ORDERING INFORMATION