Datasheet

STLM75 Operation
Doc ID 13296 Rev 12 13/40
2.4 Interrupt mode
In interrupt mode, the OS output first becomes active when the measured temperature
exceeds the T
OS
value a consecutive number of times as determined by the FT value in the
configuration register. Once activated, the OS
can only be cleared by either putting the
STLM75 into shutdown mode or by reading from any register (temperature, configuration,
T
OS
, or T
HYS
) on the device. Once the OS has been deactivated, it will only be reactivated
when the measured temperature falls below the T
HYS
value a consecutive number of times
equal to the FT value. Figure 5 illustrates typical OS
output temperature response.
Note: The OS
can only be cleared by putting the device into shutdown mode or reading any
register. Thus, this interrupt/clear process is cyclical between the T
OS
and T
HYS
events (i.e.,
T
OS
, clear, T
HYS
, clear, T
OS
, clear, T
HYS
, clear, and so forth). These interrupt mode resets
of the OS
/INT pin occur only when the STLM75 is read or placed into shutdown mode.
Otherwise, OS
/INT would remain active independently for any event.
Figure 5. OS
output temperature response diagram
1. These interrupt mode resets of O.S. occur only when STLM75 is read or placed in shutdown. Otherwise,
O.S. would remain active indefinitely for any event.
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