DescriptionTypT0Data rate1/ODRT1Reading periodT0-T2T2New data generation616 s$ATA2EADY444.EWDATAAVAILABLE".WStart-up sequenceAN284710/29 2.3 Data ready vs. interrupt signalThe device has two pins which can be activated to generate either the data-ready signal or the interrupt signal. The functionality of the pins is selected acting on bit I1(2)_CFGx bits of the CTRL_REG3 register, according to Table4 and the block diagram shown in Figure2.Figure 2.Interrupt and DataReady signal generation block diagramIn particular, the data-ready (DR) signal rises to 1 when a new set of acceleration data has been generated and is available for reading. The signal is reset after all the enabled channels are read through the serial interface.Figure 3.Data-ready signalTable 4.Data signal on INT 1 and INT 2 padsI1(2)_CFG1I1(2)_CFG0INT 1(2) Pin00Interrupt 1 (2) source01Interrupt 1 source OR Interrupt 2 source10Data ready11Boot running".W&REE
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5P)NTERRUPT#OUNTER/$2#LOCK).4X?$52!4)/.,ATCH#42,?2%', features ultra low-power operational modes that allow advanced power saving and smart Sleep to Wakeup functions.The LIS331DLH has dynamically user-selectable full scales of 2 g /4 g /8 g and is capable of measuring acceleration with output data rates from 0.5 Hz to 1 kHz.The self-test capability allows the user to check the functioning of the sensor in the final application.The device can be configured to generate interrupt signals in response to inertial wake-up/free-fall events, or based on the position of the device itself.The thresholds and timing of interrupt generators are programmable by the end user while fully operational. The LIS331DLH is available in a small, thin plastic land grid array (LGA) package, and is guaranteed to operate over a wide temperature range of -40 C to +85 C.www.st.comContentsAN28472/29 Contents1Register table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Start-up sequence . . . . . . . . . . . . . . . . . datasheet of the device