AN4506 Ver la hoja de datos (PDF) - STMicroelectronics

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AN4506

L3GD20H: 3-axis digital output gyroscope

STMicroelectronics 

AN4506

Interrupt generation

Table 26. Duration LSB value in Normal mode

ODR (Hz)

Duration LSB value (ms)

200

5

400

2.5

800

1.25

The WAIT bit of the IG_DURATION register has the following meaning:

Wait = ‘0’: the interrupt falls immediately if signal crosses the selected threshold (Figure 12).

Wait = ‘1’: if signal crosses the selected threshold, the interrupt falls only after the duration

has counted the number of samples at the selected data rate, written into the duration

counter register (Figure 13).

Figure 12. Wait disabled

• Wait bit = ‘0’ Interrupt disabled as soon as condition

is no longer valid (ex: Rate value below threshold)

Rate

(dps)

0

Counter

Interrupt

Rate

t(n)

Threshold

Duration

Value

t(n)

“Wait”

Disabled

t(n)

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