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STTS2004 bảng dữ liệu(PDF) 25 Page - STMicroelectronics |
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STTS2004 bảng dữ liệu(HTML) 25 Page - STMicroelectronics |
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25 / 58 page ![]() DocID024229 Rev 3 25/58 STTS2004 Temperature sensor registers 58 Figure 9. Event output boundary timings Systems that use the active high mode for Event output must be wired point-to-point between the STTS2004 and the sensing controller. Wire-OR configurations should not be used with active high Event output since any device pulling the Event output signal low will mask the other devices on the bus. Also note that the normal state of Event output in active high mode is a ‘0’ which will constantly draw power through the pull-up resistor. Table 12. Legend for Figure 9: Event output boundary timings Note Event output boundary conditions Event output TA bits Comparator Interrupt Critical 15 14 13 1TA TLOWER HL H 0 0 0 2TA TLOWER - THYS LL H 0 0 1 3TATUPPER LL H 0 1 0 4TA TUPPER - THYS HL H 0 0 0 5TA TCRIT LL L 1 0 0 6TA TCRIT - THYS LH H 0 1 0 7 When TA TCRIT and TA < TCRIT - THYS, the event output is in comparator mode and bit 0 of the configuration register (interrupt mode) is ignored. Comparator TCRIT TUPPER TLOWER TA TLOWER - THYS Interrupt S/W Int. Clear Critical TUPPER - THYS TCRIT - THYS TUPPER - THYS TLOWER - THYS 12 1 3 3 5 7 46 4 2 AI12271 Note: |
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