W83782D Datasheet, PDF (29/73 Pages) Winbond – MONITORING IC

Preliminary W83782D
6.5.3 The W83782D temperature sensor 2 and 3 Over-Temperature (OVT#) has two modes,
and they are programmed at Bank1 and Bank2 CR[52h] bit1 . These two bits needs to be
programmed the same value.
(1) Comparator Mode :
Temperature exceeding T_O causes the OVT# output activated until the temperature is less than
T_HYST. ( Figure 17)
(2) Interrupt Mode:
Temperature exceeding T_O causes the OVT# output activated indefinitely until reset by reading
temperature sensor 2 or sensor 3 registers. Temperature exceeding T_O , then OVT# reset, and
then temperature going below T_HYST will also cause the OVT# activated indefinitely until reset by
reading temperature sensor2 or sensor 3 registers. Once the OVT# is activated by exceeding T_O
, then reset, if the temperature remains above T_HYST , the OVT# will not be activated again.(
Figure 17)
To
THYST
OVT#
(Comparator Mode; default)
OVT#
(Interrupt Mode)
*
*
*Interrupt Reset when Temperature 2/3 is read
*
*
Figure 17. Over-Temperature Response Diagram
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Publication Release Date: April 1999
Revision A1