W83L771ASG Datasheet, PDF (8/28 Pages) Nuvotem Talema – W83L771AWG W83L771ASG Nuvoton H/W Monitoring IC

W83L771AWG/W83L771ASG
7. FUNCTIONAL DESCRIPTION
7.1 General Description
The W83L771AWG/ASG provides one remote temperature sensor input which can be connected to the
2N3904 transistor, or CPU/GPU thermal diode, as well as one local on die thermal sensor to detect the
ambient temperature. The W83L771AWG/ASG supplies Ideality Factor Configuration on one External
Diode to eliminate the temperature measurement error. Selectable conversion rates and modes allow
low power operation.
The temperature measured by the W83L771AWG/ASG is digitally compared with the value stored in
the programmable High/Low limit Registers and T_CRIT registers. All out-of-limit values can be
detected by monitoring Status Register (SR). The W83L771AWG/ASG also supports SMBus^TM 2.0
ALERT mode and TIMEOUT.
The data format of the remote temperature is represented by a 10-bit plus sign, two‟s complement word
and 11-bit unsigned binary word with an LSB equal to 0.125C. The real temperature equals the
measured temperature plus or minus offset value. Offset value could be set in offset registers. The date
format of the offset registers is also the same as the data format of the remote temperature. Local
Temperature data is represented by an 8-bit plus sign, two‟s complement format, with an LSB equal to
1C.
Publication Release Date: 2009/11/19
Version: 1.91
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