W83L771W Datasheet, PDF (10/25 Pages) Winbond – H/W Monitoring IC

W83L771W/G
High Limit
Measured Tmperature By
W83L771W
W83L771W ALERT Pin
W83L771W 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. Under this mode, W83L771W/G will
set the ALERT mask bit D7 of Configuration Register during a read of the Status Register if any flag in
Status Register is set, with the exception of Busy flag D7 and OPEN flag D2. 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 conversation if the measured temperature still exceeds limitation. The
flags in Status Register will be cleared again waiting for next read command.
Publication Release Date: March 06
-6-
Revision 0.7