LSM330D Datasheet, PDF (42/66 Pages) STMicroelectronics – Low power mode

Register descriptions
8
Register descriptions
LSM330D
The device contains a set of registers which are used to control its behavior and to retrieve
acceleration, angular rate and temperature data. The register addresses, made up of 7 bits,
are used to identify them and to write the data through the serial interface.
8.1
CTRL_REG1_A (20h)
Table 19. CTRL_REG1_A register
ODR3
ODR2
ODR1
ODR0
LPen
Zen
Yen
Xen
Table 20. CTRL_REG1_A description
ODR3-0
Data rate selection. Default value: 0
(0000: Power-down; Others: refer to Table 21, “Data rate configuration”)
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. Table 21 below provides all
the frequencies resulting from the ODR<3:0> combinations.
Table 21. 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
1
0
0
0
1
0
0
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)
Low power mode (1.620 kHz)
Normal (1.344 kHz) / Low power mode (5.376 kHz)
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Doc ID 022562 Rev 2