W83L771ASG Datasheet, PDF (10/28 Pages) Nuvotem Talema – W83L771AWG W83L771ASG Nuvoton H/W Monitoring IC

W83L771AWG/W83L771ASG
7.3 ALERT Output Mode
The W83L771AWG/ASG ALERT pin is an active-low open-drain output pin which is triggered when
the measured temperature exceeds the limitation defined in the limit registers. There are three types of
ALERT output mode: the ALERT output comparator mode, the ALERT output interrupt mode, and
the ALERT output SMBus ALERT mode.
7.3.1 ALERT Output Comparator Mode
Fig. 7.3.1 shows the mechanism of the ALERT output comparator mode. Setting Filter and Alert
Configure Register, or register address BFh, D0 to 1 could enable the 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 Temperature By
W83L771AWG/ASG
W83L771AWG/ASG ALERT Pin
W83L771AWG/ASG High
Limit Status
Fig. 7.3.1 Response of ^ALERT output comparator mode
Publication Release Date: 2009/11/19
Version: 1.91
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