STTS2002B2DN3F datasheet(23/52 Pages) STMICROELECTRONICS

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STTS2002

Temperature sensor registers

Doc ID 15389 Rev 5

23/52

Figure 9.

Event output boundary timings

Systems that use the active high mode for Event output must be wired point-to-point

between the STTS2002 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 11.

Legend for Figure 9: Event output boundary timings

Note

Event output boundary conditions

Event output

TA bits

Comparator Interrupt

Critical

1TA ≥ TLOWER

000

2TA < TLOWER - THYS

001

3TA > TUPPER

010

4TA ≤ TUPPER - THYS

000

5TA ≥ TCRIT

100

6TA < TCRIT - THYS

010

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

TLOWER - THYS

Interrupt

S/W Int. Clear

Critical

TUPPER - THYS

TCRIT - THYS

TUPPER - THYS

TLOWER - THYS

1 3

3 5

46 4

AI12271

Note:

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