W83L771ASG Datasheet, PDF (11/28 Pages) Nuvotem Talema – W83L771AWG W83L771ASG Nuvoton H/W Monitoring IC

W83L771AWG/W83L771ASG
7.3.2 ALERT Output Interrupt Mode
Fig. 7.3.2 shows the mechanism of the ALERT output interrupt mode. In this mode, the
W83L771AWG/ASG will set the ALERT mask bit D7 of Configuration Register during a read of the
Status Register if any flag in Status Register, except the Busy flag D7 and OPEN flag D2, is set. This
prevents further ALERT triggering until the master has reset the ALERT mask bit, at the end of the
interrupt service routine. The Status Register flags are cleared only upon a read command from the
master and will be re-alerted at the end of the next temperature conversion if the measured
temperature still falls outside of the allowed range.
High Limit
Measured Temperature By
W83L771AWG/ASG
ALERT mask set in response to
reading of status register by
master
W83L771AWG/ASG ALERT Pin
End of Temperature conversion
W83L771AWG/ASG High
Limit Status
Fig. 7.3.2 Response of ALERT output interrupt mode
Publication Release Date: 2009/11/19
Version: 1.91
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