W83627THF_06 Datasheet, PDF (40/142 Pages) Winbond – Winbond LPC I/O

W83627THF/W83627THG
TOI
THYST
SMI#
*
*
*Interrupt Reset when Interrupt Status Registers are read
Figure 5-16
5.6.4 The W83627THF temperature sensor 2(CPUTIN) and sensor 3(AUXTIN) SMI#
interrupt has two modes and it is programmed at CR[4Ch] bit 6.
(1) Comparator Interrupt Mode
Temperature exceeding T_O causes an interrupt and this interrupt will be reset by reading all the
Interrupt Status Register. Once an interrupt event has occurred by exceeding T_O, then reset, if the
temperature remains above the T_HYST, the interrupt will occur again when the next conversion has
completed. If an interrupt event has occurred by exceeding T_O and not reset, the interrupts will not
occur again. The interrupts will continue to occur in this manner until the temperature goes below
T_HYST. ( Figure 5-17 )
(2) Two-Times Interrupt Mode
Temperature exceeding T_O causes an interrupt and then temperature going below T_HYST will also
cause an interrupt if the previous interrupt has been reset by reading all the interrupt Status Register.
Once an interrupt event has occurred by exceeding T_O , then reset, if the temperature remains above
the T_HYST , the interrupt will not occur. (Figure 5-18 )
TOI
TOI
THYST
THYST
SMI#
**
**
SMI#
*
*
*
*
*Interrupt Reset when Interrupt Status Registers are read
Figure 5-17
Figure 5-18
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Publication Release Date: September 26, 2006
Revision 1.2