LIS331HHTR STMicroelectronics, LIS331HHTR Datasheet - Page 28

• Manufacturer Part Number: LIS331HHTR
• Description: ACCELEROMETER SENSOR 3AXIS 16-LG
• Manufacturer: STMicroelectronics
• Series: MEMS, nanor

Specifications of LIS331HHTR

• Axis: X, Y, Z
• Acceleration Range: ±6g, 12g, 24g
• Sensitivity: 12mg/digit, 6mg/digit, 3mg/digit
• Voltage - Supply: 2.16 V ~ 3.6 V
• Output Type: Digital
• Bandwidth: 50Hz ~ 1kHz Selectable
• Interface: I²C, SPI
• Mounting Type: Surface Mount
• Package / Case: 16-LGA
• Package Type: LGA
• Operating Supply Voltage (min): 2.16V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 3mm
• Product Height (mm): 1mm
• Product Length (mm): 3mm
• Mounting: Surface Mount
• Pin Count: 16
• Sensing Axis: X, Y, Z
• Acceleration: 6 g, 12 g, 24 g
• Digital Output - Number Of Bits: 16 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.16 V
• Supply Current: 10 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: I2C, SPI
• Shutdown: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register description
7.5
7.6
7.7
28/37
BDU bit is used to inhibit output registers update between the reading of upper and lower
register parts. In default mode (BDU = ‘0’) the lower and upper register parts are updated
continuously. If it is not sure to read faster than output data rate, it is recommended to set
BDU bit to ‘1’. In this way, after the reading of the lower (upper) register part, the content of
that output registers is not updated until the upper (lower) part is read too.
This feature avoids reading LSB and MSB related to different samples.
CTRL_REG5 (24h)
Table 29.
Table 30.
TurnOn bits are used for turning on the sleep to wake function.
Table 31.
Setting TurnOn[1:0] bits to 11 the “sleep to wake” function is enabled. When an interrupt
event occurs the device is turned to normal mode increasing the ODR to the value defined in
CTRL_REG1. Although the device is in normal mode, CTRL_REG1 content is not
automatically changed to “normal mode” configuration.
HP_FILTER_RESET (25h)
Dummy register. Reading at this address zeroes instantaneously the content of the internal
high pass-filter. If the high pass filter is enabled all three axes are instantaneously set to 0g.
This allows to overcome the settling time of the high pass filter.
REFERENCE (26h)
Table 32.
TurnOn1,
TurnOn0
TurnOn1
Ref7
0
0
1
CTRL_REG5 register
CTRL_REG5 description
Sleep to wake configuration
REFERENCE register
Turn-on mode selection for sleep to wake function. Default value: 00.
Ref6
0
TurnOn0
0
1
Ref5
0
Doc ID 16366 Rev 1
Turned on: The device is in low power mode (ODR is defined in
Ref4
0
Sleep to wake function is disabled
Ref3
Sleep to wake status
0
CTRL_REG1)
Ref2
0
TurnOn1
Ref1
LIS331HH
TurnOn0
Ref0