TMP401

www.DataSheet4U.com TMP401 SBOS371 − AUGUST 2006 +15C Programmable, Remote/Local, Digital Out TEMPERATURE SENSOR FEATURES D D D D D D D D D ±1°C REMOTE DIODE SENSOR ±3°C LOCAL TEMPERATURE SENSOR SERIES RESISTANCE CANCELLATION THERM FLAG OUTPUT ALERT/THERM2 FLAG OUTPUT PROGRAMMABLE OVER/UNDER TEMPERATURE LIMITS PROGRAMMABLE RESOLUTION: 9- to 12-Bit DIODE FAULT DETECTION SMBus SERIAL INTERFACE DESCRIPTION The TMP401 is a remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensor diode-connected transistors are typically low-cost, NPN- or PNP-type transistors or diodes that are an integral part of microcontrollers, microprocessors, or FPGAs. Remote accuracy is ±1°C for multiple IC manufacturers, with no calibration needed. The Two-Wire serial interface accepts SMBus write byte, read byte, send byte, and receive byte commands to program alarm thresholds and to read temperature data. Features included in the TMP401 are series resistance cancellation, wide remote temperature measurement range (up to +150°C), diode fault detection, and temperature alert functions. APPLICATIONS D D D D D D LCD/DLP E/LCOS PROJECTORS SERVERS INDUSTRIAL CONTROLLERS CENTRAL OFFICE TELECOM EQUIPMENT DESKTOP AND NOTEBOOK COMPUTERS STORAGE AREA NETWORKS V+ 1 V+ GND 5 4 6 THERM ALERT/THERM2 TMP401 Interrupt Configuration Consecutive Alert Configuration Register Remote Temp High Limit One− Shot Start Register Status Register Remote THERM Limit Remote Temp ...