LSM303DLHTR STMicroelectronics, LSM303DLHTR Datasheet - Page 31

• Manufacturer Part Number: LSM303DLHTR
• Description: IC ACCELEROMETER 3AXIS 3D 28LGA
• Manufacturer: STMicroelectronics

Specifications of LSM303DLHTR

• Output Type: Digital - I²C
• Sensor Type: Accelerometer and Magnetometer
• Sensing Axis: Triple
• Acceleration: 2 g, 4 g, 8 g
• Sensitivity: 1 mg/digit, 2 mg/digit, 3.9 mg/digit
• Package / Case: LGA-28L
• Digital Output - Number Of Bits: 16 bit
• Supply Voltage (max): 3.3 V
• Supply Voltage (min): 2.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 30 C
• Digital Output - Bus Interface: I2C
• For Use With: 497-10689 - BOARD ADAPTER LSM303DLH DIL24
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10765-2; LSM303DLHTR

LSM303DLH
9.1.3
internal registers related to trimming functions to permit good device behavior. If, for any
reason, the content of the trimming registers was changed, it is sufficient to use this bit to
restore the correct values. When the BOOT bit is set to ‘1’ the content of internal Flash is
copied to the corresponding internal registers and is used to calibrate the device. These
values are factory-trimmed and are different for every accelerometer. They permit good
device behavior and normally do not have to be modified. At the end of the boot process, the
BOOT bit is again set to ‘0’.
Table 24.
HPCF[1:0]. These bits are used to configure the high-pass filter cut-off frequency f
given by:
The equation can be simplified to the following approximated equation:
Table 25.
CTRL_REG3_A (22h)
Table 26.
HPcoeff2,1
IHL
00
01
10
11
HPM1
0
0
1
High-pass filter mode configuration
High-pass filter cut-off frequency configuration
CTRL_REG3_A register
Data rate = 50 Hz
PP_OD
f
0.125
t
0.25
0.5
[Hz]
1
HPM0
LIR2
0
1
0
Doc ID 16941 Rev 1
Data rate = 100 Hz
f
I2_CFG1
t
Normal mode (reset reading HP_RESET_FILTER)
Reference signal for filtering
Normal mode (reset reading HP_RESET_FILTER)
=
f
f
t
0.25
ln
t
0.5
[Hz]
2
1
⎛
⎝
=
1
--------------------- -
6
–
⋅
----------- -
HPc
f
1
I2_CFG0
HPc
s
⎞
⎠
⋅
Data rate = 400 Hz
High-pass filter mode
------
2π
f
s
f
t
[Hz]
LIR1
8
4
2
1
Registers description
I1_CFG1
Data rate = 1000 Hz
f
t
2.5
[Hz]
20
10
5
I1_CFG0
t
,which is
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