LIS331DL STMicroelectronics, LIS331DL Datasheet - Page 32

• Manufacturer Part Number: LIS331DL
• Description: Board Mount Accelerometers MEMS MOTION SENSOR 3-AXIS
• Manufacturer: STMicroelectronics

Specifications of LIS331DL

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 8 g
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.16 V
• Supply Current: 300 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: I2C, SPI
• Mounting Style: SMD/SMT
• Sensitivity: 18 mg/digit, 72 mg/digit
• Package / Case: LGA-16
• Output Type: Digital
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register description
7.13
7.14
32/42
FF_WU_DURATION_1 (33h)
Table 36.
Table 37.
Duration register for Free-Fall/Wake-Up interrupt 1. Duration step and maximum value
depend on the ODR chosen. Step 2.5 msec, from 0 to 637.5 msec if ODR=400 Hz, else step
10 msec, from 0 to 2.55 sec when ODR=100 Hz. The counter used to implement duration
function is blocked when LIR=1 in configuration register and the interrupt event is verified
FF_WU_CFG_2 (34h)
Table 38.
Table 39.
AOI
LIR
ZHIE
ZLIE
YHIE
YLIE
XHIE
XLIE
AOI
D7
D7-D0
FF_WU_DURATION_1 register
FF_WU_DURATION_1 description
FF_WU_CFG_2 register
FF_WU_CFG_2 description
And/Or combination of Interrupt events. Default value: 0
(0: OR combination of interrupt events; 1: AND combination of interrupt events)
Latch Interrupt request into FF_WU_SRC_2 reg with the FF_WU_SRC_2 reg cleared
by reading FF_WU_SRC_2 reg. Default value: 0
(0: interrupt request not latched; 1: interrupt request latched)
Enable interrupt generation on Z High event. Default value: 0
(0: disable interrupt request;
1: enable interrupt request on measured accel. value higher than preset threshold)
Enable interrupt generation on Z Low event. Default value: 0
(0: disable interrupt request;
1: enable interrupt request on measured accel. value lower than preset threshold)
Enable interrupt generation on Y High event. Default value: 0
(0: disable interrupt request;
1: enable interrupt request on measured accel. value higher than preset threshold)
Enable interrupt generation on Y Low event. Default value: 0
(0: disable interrupt request;
1: enable interrupt request on measured accel. value lower than preset threshold)
Enable interrupt generation on X High event. Default value: 0
(0: disable interrupt request;
1: enable interrupt request on measured accel. value higher than preset threshold)
Enable interrupt generation on X Low event. Default value: 0
(0: disable interrupt request;
1: enable interrupt request on measured accel. value lower than preset threshold)
LIR
D6
Duration value. Default value: 0000 0000
ZHIE
D5
ZLIE
D4
YHIE
D3
YLIE
D2
XHIE
D1
LIS331DL
XLIE
D0