LSM303DLHCTR Datasheet, PDF (24/42 Pages) STMicroelectronics – Ultra compact high performance e-compass 3D accelerometer and 3D magnetometer module

Register description
7
Register description
LSM303DLHC
The device contains a set of registers which are used to control its behavior and to retrieve
acceleration data. The register address, made up of 7 bits, is used to identify them and to
write the data through the serial interface.
7.1
Linear acceleration register description
7.1.1 CTRL_REG1_A (20h)
Table 18. CTRL_REG1_A register
ODR3
ODR2
ODR1
ODR0
LPen
Zen
Yen
Xen
Table 19. CTRL_REG1_A description
ODR3-0
Data rate selection. Default value: 0
(0000: power-down, others: refer to Table 20.)
LPen
Low-power mode enable. Default value: 0
(0: normal mode, 1: low-power mode)
Z axis enable. Default value: 1
Zen
(0: Z axis disabled, 1: Z axis enabled)
Y axis enable. Default value: 1
Yen
(0: Y axis disabled, 1: Y axis enabled)
X axis enable. Default value: 1
Xen
(0: X axis disabled, 1: X axis enabled)
ODR<3:0> is used to set the power mode and ODR selection. In Table 20 all frequencies
resulting in a combination of ODR<3:0> are listed.
Table 20. Data rate configuration
ODR3 ODR2 ODR1 ODR0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
Power mode selection
Power-down mode
Normal / low-power mode (1 Hz)
Normal / low-power mode (10 Hz)
Normal / low-power mode (25 Hz)
Normal / low-power mode (50 Hz)
Normal / low-power mode (100 Hz)
Normal / low-power mode (200 Hz)
Normal / low-power mode (400 Hz)
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Doc ID 018771 Rev 1