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PDF LIS2DH12TR Data sheet ( Hoja de datos )
| Número de pieza | LIS2DH12TR | |
| Descripción | MEMS digital output motion sensor | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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LIS2DH12
MEMS digital output motion sensor:
ultra-low-power high-performance 3-axis "femto" accelerometer
Datasheet - production data
LGA-12 (2.0x2.0x1 mm)
Features
Wide supply voltage, 1.71 V to 3.6 V
Independent IOs supply (1.8 V) and supply
voltage compatible
Ultra-low power consumption down to 2 μA
2g/±4g/8g/16g selectable full scales
I2C/SPI digital output interface
2 independent programmable interrupt
generators for free-fall and motion detection
6D/4D orientation detection
“Sleep-to-wake” and “return-to-sleep” functions
Free-fall detection
Motion detection
Embedded temperature sensor
Embedded FIFO
ECOPACK® RoHS and “Green” compliant
Applications
Motion-activated functions
Display orientation
Shake control
Pedometer
Gaming and virtual reality input devices
Impact recognition and logging
Description
The LIS2DH12 is an ultra-low-power high-
performance three-axis linear accelerometer
belonging to the “femto” family with digital I2C/SPI
serial interface standard output.
The LIS2DH12 has user-selectable full scales of
2g/±4g/8g/16g and it is capable of measuring
accelerations with output data rates from 1 Hz to
5.3 kHz.
The self-test capability allows the user to check
the functionality of the sensor in the final
application.
The device may be configured to generate
interrupt signals by two independent inertial
wake-up/free-fall events as well as by the position
of the device itself.
The LIS2DH12 is available in a small thin plastic
land grid array package (LGA) and is guaranteed
to operate over an extended temperature range
from -40 °C to +85 °C.
Order codes
LIS2DH12
LIS2DH12TR
Table 1. Device summary
Temperature range [C]
Package
-40 to +85
LGA-12
-40 to +85
LGA-12
Packaging
Tray
Tape and reel
August 2013
This is information on a product in full production.
DocID025056 Rev 1
1/49
www.st.com
1 page  
LIS2DH12
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Table 19.
Table 20.
Table 21.
Table 22.
Table 23.
Table 24.
Table 25.
Table 26.
Table 27.
Table 28.
Table 29.
Table 30.
Table 31.
Table 32.
Table 33.
Table 34.
Table 35.
Table 36.
Table 37.
Table 38.
Table 39.
Table 40.
Table 41.
Table 42.
Table 43.
Table 44.
Table 45.
Table 46.
Table 47.
Table 48.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Temperature sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
SPI slave timing values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
I2C slave timing values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Operating mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Turn-on time for operating mode transition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Current consumption of operating modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Serial interface pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Serial interface pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SAD+read/write patterns. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Transfer when master is writing one byte to slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Transfer when master is writing multiple bytes to slave . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Transfer when master is receiving (reading) one byte of data from slave . . . . . . . . . . . . . 25
Transfer when master is receiving (reading) multiple bytes of data from slave . . . . . . . . . 25
Register address map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
STATUS_REG_AUX register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
STATUS_REG_AUX description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
INT_COUNTER_REG register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
WHO_AM_I register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
TEMP_CFG_REG register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
TEMP_CFG_REG description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
CTRL_REG1 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CTRL_REG1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Data rate configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CTRL_REG2 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CTRL_REG2 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
High-pass filter mode configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CTRL_REG3 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CTRL_REG3 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CTRL_REG4 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
CTRL_REG4 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Self-test mode configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
CTRL_REG5 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
CTRL_REG5 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
CTRL_REG6 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
CTRL_REG6 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
REFERENCE/DATACAPTURE register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
REFERENCE/DATACAPTURE description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
STATUS_REG register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
STATUS_REG description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
FIFO_CTRL_REG register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
FIFO_CTRL_REG description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
FIFO mode configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
FIFO_SRC_REG register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
DocID025056 Rev 1
5/49
49
5 Page 
LIS2DH12
Mechanical and electrical specifications
Symbol
Table 3. Mechanical characteristics (continued)
Parameter
Test conditions
Min. Typ.(1)
Max.
Unit
TCOff
Vst
Top
Zero-g level change
vs. temperature
Max delta from 25 °C
FS bit set to 00
X-axis; Normal mode
Self-test
FS bit set to 00
output change(4) (5) (6) Y-axis; Normal mode
FS bit set to 00
Z-axis; Normal mode
Operating
temperature range
±0.5 mg/°C
17 360 LSb
17 360 LSb
17 360 LSb
-40 +85 °C
1. Typical specifications are not guaranteed.
2. Verified by wafer level test and measurement of initial offset and sensitivity.
3. Typical zero-g level offset value after factory calibration test at socket level.
4. The sign of “Self-test output change” is defined by the ST bit in CTRL_REG4 (23h), for all axes.
5. “Self-test output change” is defined as the absolute value of:
OUTPUT[LSb](Self test enabled) - OUTPUT[LSb](Self test disabled). 1LSb=4mg at 10bit representation, ±2 g full scale
6. After enabling the ST bit, correct data is obtained after two samples (low-power mode / normal mode) or after eight samples
(high-resolution mode).
2.2
Temperature sensor characteristics
@ Vdd = 2.5 V, T = 25 °C unless otherwise noted(b)
Symbol
Table 4. Temperature sensor characteristics
Parameter
Min.
Typ.(1)
TSDr
TODR
Top
Temperature sensor output
change vs. temperature
Temperature refresh rate
Operating temperature range
1
ODR(3)
-40
1. Typical specifications are not guaranteed.
2. 8-bit resolution.
3. Refer to Table 28.
Max.
+85
Unit
digit/°C(2)
Hz
°C
b. The product is factory calibrated at 2.5 V. Temperature sensor operation is guaranteed in the range 2 V - 3.6 V.
DocID025056 Rev 1
11/49
49
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LIS2DH12TR.PDF ] | |
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