W83627DHG Datasheet, PDF (63/268 Pages) Winbond – WINBOND LPC I/O

W83627DHG
T_HYST
127'C
T_OI
T_OI
T_HYST
SMI#
*
*
*
SMI#
*
*
*Interrupt Reset when Interrupt Status Registers are read
Comparator Interrupt Mode
Mode
*
*
Two-Time Interrupt
(2) Two-Time Interrupt Mode
This mode is enabled by setting T_HYST (Temperature Hysteresis) lower than T_O and setting Bank0
Index 4Ch, bit 5 to zero.
In this mode, the SMI# pin can create an interrupt when the current temperature rises above T_O or
when the current temperature falls below T_HYST. Once the temperature rises above T_O, however,
and generates an interrupt, this mode does not generate additional interrupts, even if the
temperature remains above T_O, until the temperature falls below T_HYST. This interrupt must be reset
by reading all the interrupt status registers, or subsequent events do not generate interrupts. This
is illustrated in the figure above.
(3) One-Time Interrupt Mode
This mode is enabled by setting T_HYST (Temperature Hysteresis) lower than T_O and setting Bank0
Index 4Ch, bit 5 to one.
In this mode, the SMI# pin can create an interrupt when the current temperature rises above T_O.
Once the temperature rises above T_O, however, and generates an interrupt, this mode does not
generate additional interrupts, even if the temperature remains above T_O, until the temperature
falls below T_HYST. This interrupt must be reset by reading all the interrupt status registers, or
subsequent events do not generate interrupts. This is illustrated in the following figure.
Publication Release Date: Aug, 22, 2007
-51-
Version 1.4