LIS33DETR STMicroelectronics, LIS33DETR Datasheet - Page 23

• Manufacturer Part Number: LIS33DETR
• Description: IC ACCELEROMETER 3AXIS 16LLGA
• Manufacturer: STMicroelectronics

Specifications of LIS33DETR

• Axis: X, Y, Z
• Acceleration Range: ±2.3g, 9.2g
• Sensitivity: 18mg/digit, 72mg/digit
• Voltage - Supply: 2.16 V ~ 3.6 V
• Output Type: Digital
• Bandwidth: 100Hz ~ 400Hz 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 Length (mm): 3mm
• Mounting: Surface Mount
• Pin Count: 16
• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 8 g
• Digital Output - Number Of Bits: 8 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.16 V
• Supply Current: 0.3 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: I2C, SPI
• Mounting Style: SMD/SMT
• Shutdown: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LIS33DE
7
7.1
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.
DR bit allows to select the data rate at which acceleration samples are produced. The
default value is ‘0’ which corresponds to a data-rate of 100 Hz. By changing the content of
DR to ‘1’ the selected data-rate will be set equal to 400 Hz.
PD bit allows to turn the device out of power-down mode. The device is in power-down
mode when PD= ‘0’ (default value after boot). The device is in normal mode when PD is set
to ‘1’.
STP, STM bits are used to activate the self-test function. When the bit is set to one, an
output change will occur to the device outputs (refer to Table 2 and 3 for specification) thus
allowing to check the functionality of the whole measurement chain.
Zen bit enables the generation of Data Ready signal for Z-axis measurement channel when
set to ‘1’. The default value is ‘1’.
Yen bit enables the generation of Data Ready signal for Y-axis measurement channel when
set to ’1’. The default value is ’1’.
Xen bit enables the generation of Data Ready signal for X-axis measurement channel when
set to ’1’. The default value is ’1’.
DR
PD
FS
STP, STM
Zen
Yen
Xen
DR
CTRL_REG1 (20h) register
CTRL_REG1 (20h) register description
Self test enable. Default value: 0
Data rate selection. Default value: 0
(0: 100 Hz output data rate; 1: 400 Hz output data rate)
Power down control. Default value: 0
(0: power down mode; 1: active mode)
Full scale selection. Default value: 0
(refer to table 2 for typical full scale value)
(0: normal mode; 1: self test P, M enabled)
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)
PD
FS
Doc ID 15596 Rev 1
STP
STM
Zen
Register description
Yen
Xen
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