LIS331HH STMicroelectronics, LIS331HH Datasheet - Page 24

• Manufacturer Part Number: LIS331HH
• Description: Board Mount Accelerometers MEMS Digital Sensor 3-axes Nano
• Manufacturer: STMicroelectronics

Specifications of LIS331HH

• 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
• Sensitivity: 3 mg/digit, 6 mf/digit, 12 mg/digit
• Package / Case: LGA-16
• Output Type: Digital
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register description
7
7.1
24/37
Register description
The device contains a set of registers which are used to control its behavior and to retrieve
acceleration data. The registers address, made of 7 bits, is used to identify them and to
write the data through serial interface.
CTRL_REG1 (20h)
Table 16.
Table 17.
PM bits allow to select between power-down and two operating active modes. The device is
in power-down mode when PD bits are set to “000” (default value after boot).
shows all the possible power mode configurations and respective output data rates. Output
data in the low-power modes are computed with low-pass filter cut-off frequency defined by
DR1, DR0 bits.
DR bits, in the normal-mode operation, select the data rate at which acceleration samples
are produced. In low-power mode they define the output data resolution.
the possible configuration for DR1 and DR0 bits.
Table 18.
PM2 - PM0
DR1, DR0
Zen
Yen
Xen
PM2
PM2
0
0
0
0
1
CTRL_REG1 register
CTRL_REG1 description
Power mode and low-power output data rate configurations
PM1
PM1
Power mode selection. Default value: 000
(000: Power-down; Others: refer to
Data rate selection. Default value: 00
(00:50 Hz; Others: refer to
Z axis enable. Default value: 1
(0: Z axis disabled; 1: Z axis enabled)
Y axis enable. Default value: 1
(0: Y axis disabled; 1: Y axis enabled)
X axis enable. Default value: 1
(0: X axis disabled; 1: X axis enabled)
0
0
1
1
0
PM0
PM0
0
1
0
1
0
Doc ID 16366 Rev 1
DR1
Power mode selection
Table
Normal mode
Power-down
Low-power
Low-power
Low-power
19)
Table
DR0
18)
Zen
Output data rate [Hz]
Table 19
Yen
ODR
ODR
0.5
--
1
2
Table 18
LP
LIS331HH
shows all
Xen