DescriptionMinT0Data rate1/ODRT1Reading periodT0-T2T2New data generation (typ)616 sTable 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 source Startup sequenceAN298810/28 Doc ID 15760 Rev 1Figure 2.Interrupt and DataReady signal generation block diagramIn particular, the DataReady (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.DataReady signal2.4 Understanding acceleration dataThe measured acceleration data are sent into the OUTX, OUTY, OUTZ registers.Acceleration data for the X (Y, Z) channel is expressed as a 2s complement number.10DataReady11Boot runningTable 4.Data signal on INT 1 and INT 2 padsI1(2)_CFG1I1(2)_CFG0INT 1(2) PinAN2988Startup sequenceDoc ID 15760 Rev 111/28 2.4.1 Data alignmentAcceleration data are represented as 8-bit numbers, two features ultra low-power operational modes that allow advanced power saving and smart sleep to wake functions.The LIS331DLF 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 400 Hz.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 wakeup/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 on the fly. The LIS331DLF is available in a small, thin plastic land grid array (LGA) package and is guaranteed to operate over an wide temperature range of -40 C to +85 C.www.st.com Contents AN29882/28 Doc ID 15760 Rev 1Contents1Register table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Startup sequence . . . . . . . . . . . . . . . datasheet of the device, the Power-mode (PM) a