Texas Instruments TMP102EVM, Руководство пользователя, Страница: 16 / 22

TMP102EVM Software Overview
www.ti.com
When the TMP102EVM software is in Interrupt Mode, the Alert pin does not automatically clear after it
falls below the T
LOW
Register limit. Instead, the user must either select the Read All Reg button or put the
device into Shutdown mode, described in Section 5.2.5 . After the Read All Reg button is selected, or the
device is put into Shutdown Mode, the Alert pin clears when the measured temperature drops down below
the T
LOW
Register. Figure 18 illustrates the Thermostat Mode dialog.
Figure 18. Comparator/Interrupt Mode
5.2.8 Conversion Rate
The Conversion Rate selection box (shown in Figure 19 ) allows the user to change how long each
temperature conversion takes the TMP102 to perform. The user may want to select a slower conversion
time, as shown in
Figure 19 , to make the TMP102 consume less power.
Figure 19. Conversion Rate
5.2.9 Fault Queue
The fault queue drop-down box allows the user to configure how many faults must be triggered before the
Alert pin is activated, as shown in
Figure 20 . A fault is generated whenever the TMP102 T
HIGH
Register is
exceeded by the Temperature Register. This feature can be useful to prevent the TMP102 from triggering
on temperature spikes that the user may not want to trigger with the Alert pin.
Figure 20. Setting the Fault Queue
16 TMP102EVM Evaluation Board and Software Tutorial SBOU114 – August 2011
Submit Documentation Feedback
Copyright © 2011, Texas Instruments Incorporated