W83627HF Datasheet, PDF (119/185 Pages) Winbond – WINBOND I/O

W83627HF/F
PRELIMINARY
11.6 OVT# interrupt mode
The OVT# signal is only related with temperature sensor 2 and 3 (VTIN2 / VTIN3).
11.6.1 The W83627HF temperature sensor 2 and 3 Over-Temperature (OVT#) has the
following modes
(1) Comparator Mode :
Setting Bank1/2 CR[52h] bit 2 to 0 will set OVT# signal to comparator mode. Temperature
exceeding T_O causes the OVT# output activated until the temperature is less than T_HYST. ( Figure
11.12)
(2) Interrupt Mode:
Setting Bank1/2 CR[52h] bit 2 to 1 will set OVT# signal to interrupt mode. Setting Temperature
exceeding T_O causes the OVT# output activated indefinitely until reset by reading temperature
sensor 2 or sensor 3 registers. Temperature exceeding TO , then OVT# reset, and then
temperature going below THYST 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 11.12)
To
T_HYST
OVT#
(Comparator Mode; default)
OVT#
(Interrupt Mode)
*
*
*
*
*Interrupt Reset when Temperature 2/3 is read
- 102 -
Publication Release Date: Jul 1999
Revision 0.53