LIS33DE STMicroelectronics, LIS33DE Datasheet - Page 28

• Manufacturer Part Number: LIS33DE
• Description: Board Mount Accelerometers MEMS MOTION SENS 3 AXIS 2G/8G SDO NANO
• Manufacturer: STMicroelectronics

Specifications of LIS33DE

• Sensing Axis: Triple
• Acceleration: 2 g, 8 g
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.16 V
• Supply Current: 0.3 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: I2C, SPI
• 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
7.10
7.11
28/31
FF_WU_THS (32h)
Table 32.
Table 33.
Most significant bit (DCRM) is used to select the resetting mode of the duration counter. If
DCRM=0 counter is reset when the interrupt is no more active else if DCRM=1 duration
counter is decremented.
FF_WU_DURATION (33h)
Table 34.
Table 35.
Duration register for free-fall/wake-up interrupt. 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.
THS6, THS0
DCRM
D7
DCRM
D7-D0
FF_WU_THS (32h) register
FF_WU_THS (32h) register description
FF_WU_DURATION (33h) register
FF_WU_DURATION (33h) register description
THS6
D6
Resetting mode selection. Default value: 0
(0: counter reset; 1: counter decremented)
Free-fall / wake-up Threshold: default value: 000 0010
Duration value. Default value: 0000 0000
THS5
D5
Doc ID 15596 Rev 1
THS4
D4
THS3
D3
THS2
D2
THS1
D1
LIS33DE
THS0
D0