PDF W83775G Data sheet ( Hoja de datos )

Número de pieza	W83775G
Descripción	H/W Monitoring IC
Fabricantes	nuvoton
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No Preview Available ! W83775G Nuvoton H/W Monitoring IC DATE: 25TH , JANUARY, 2010 REVISION: 1.4 1 page W83775G 2. FEATURES 2.1 Monitoring Items - Temperature  Measure the temperature with high accuracy  One on-chip thermal sensor  Two remote temperature sensor inputs  Ideality Factor Configuration on External Diodes.  Remote Diode Fault Detection. 2.2 General  Interface: SMBusTM serial interface  3.3V±10% VCC operation  10 bit plus sign remote temperature data format, 0.125C resolution  Programmable offset register for various thermal diodes  SMBusTM 2.0 compatible interface, supports TIMEOUT  Programmable conversion rates allow user to optimize the power consumption.  Supply 2 alert output on first remote channel: ALERT and T _ CRIT _ A  ALERT Output supports SMBusTM 2.0 protocol  Programmable Temperature High/Low limit and hysteresis for ALERT and T _ CRIT _ A output  Report both temperatures of diodes with Dual-core CPU. 2.3 Applications  Desktop and Notebook computers, support down to 45nm processes and below. (Please refer to application notice for details)  Hardware Management  Servers  Embedded Applications Publication Release Date: Jan, 2010 - 2 - Revision 1.4 5 Page W83775G 7.3 ALERT Output Mode The W83775G ALERT pin is an active-low, open-drain output pin which is triggered when the measured temperature exceeds the limits defined in limit registers. There are three types of ALERT output mode: ALERT output comparator mode, ALERT output interrupt mode, and ALERT output SMBus ALERT mode. 7.3.1 ALERT Output Comparator Mode Fig. 7.3.1 shows the mechanism of ALERT output comparator mode. Setting Filter and Alert Configure Register, or register address BFh, D0 to 1 enables ALERT output comparator mode. In this mode, the ALERT pin will be alerted if the monitored temperature is out-of -limit and the ALERT pin keeps low until the temperature goes back to the target range. This mode is not power-on default setting. High Limit Measured Tmperature By W83775G W83775G ALERT Pin W83775G High Limit Status Fig. 7.3.1 Response of ALERT output comparator mode 7.3.2 ALERT Output Interrupt Mode Fig. 7.3.2 shows the mechanism of ALERT output interrupt mode. In this mode, the W83775G will set the ALERT mask bit D7 of Configuration Register during a read of the Status Register if any flag in Publication Release Date: Jan, 2010 - 8 - Revision 1.4 11 Page

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