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W83783S Datasheet, PDF (23/57 Pages) Winbond – MONITORING IC
W83783S
Preliminary
6.5.2 The W83783S temperature sensor 1 SMI# interrupt has three modes
(1) Comparator Interrupt Mode
Temperature exceeding TO causes an interrupt and this interrupt will be reset by reading all the
Interrupt Status Register. Once an interrupt event has occurred by exceeding TO, then reset, if
the temperature remains above the THYST, the interrupt will occur again when the next conversion
has completed. If an interrupt event has occurred by exceeding TO and not reset, the interrupts
will not occur again. The interrupts will continue to occur in this manner until the temperature
goes below THYST. ( Figure 16-1 )
(2) Two-Times Interrupt Mode
Temperature exceeding TO causes an interrupt and then temperature going below THYST 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 TO , then reset, if the temperature
remains above the THYST , the interrupt will not occur. (Figure 16-2 )
(3) One-Time Interrupt Mode
Temperature exceeding TO causes an interrupt and then temperature going below THYST will not
cause an interrupt. Once an interrupt event has occurred by exceeding TO , then going below
THYST, an interrupt will not occur again until the temperature exceeding TO. (Figure 16-3 )
TOI
TOI
THYST
THYST
SMI#
*
*
SMI#
*
*
*
*
*Interrupt Reset when Interrupt Status Registers are read
*
*
Figure 16-1. Comparator Interrupt Mode
Figure 16-2. Two-Times Interrupt Mode
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Publication Release Date: April 1999
Revision 0.55