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PDF LIS3DH Data sheet ( Hoja de datos )
| Número de pieza | LIS3DH | |
| Descripción | MEMS digital output motion sensor ultra low-power high performance 3-axes "nano" accelerometer | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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LIS3DH
MEMS digital output motion sensor
ultra low-power high performance 3-axes “nano” accelerometer
Features
■ Wide supply voltage, 1.71 V to 3.6 V
■ Independent IOs supply (1.8 V) and supply
voltage compatible
■ Ultra low-power mode consumption
down to 2 µA
■ ±2g/±4g/±8g/±16g dynamically selectable full-
scale
■ I2C/SPI digital output interface
■ 16 bit data output
■ 2 independent programmable interrupt
generators for free-fall and motion detection
■ 6D/4D orientation detection
■ Free-fall detection
■ Motion detection
■ Embedded temperature sensor
■ Embedded self-test
■ Embedded 96 levels of 16 bit data output FIFO
■ 10000 g high shock survivability
■ ECOPACK® RoHS and “Green” compliant
Applications
■ Motion activated functions
■ Free-fall detection
■ Click/double click recognition
■ Intelligent power saving for handheld devices
■ Pedometer
■ Display orientation
■ Gaming and virtual reality input devices
■ Impact recognition and logging
■ Vibration monitoring and compensation
LGA-16 (3x3x1 mm)
belonging to the “nano” family, with digital I2C/SPI
serial interface standard output. The device
features ultra low-power operational modes that
allow advanced power saving and smart
embedded functions.
The LIS3DH has dynamically 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 kHz. The self-test capability allows
the user to check the functioning 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.
Thresholds and timing of interrupt generators are
programmable by the end user on the fly. The
LIS3DH has an integrated 32-level first in, first out
(FIFO) buffer allowing the user to store data for
host processor intervention reduction. The
LIS3DH is available in small thin plastic land grid
array package (LGA) and it is guaranteed to
operate over an extended temperature range from
-40 °C to +85 °C.
Table 1. Device summary
Order codes
Temp.
range [°C]
Package
Packaging
LIS3DH -40 to +85 LGA-16
Tray
LIS3DHTR -40 to +85 LGA-16 Tape and reel
Description
The LIS3DH is an ultra low-power high
performance three axes linear accelerometer
May 2010
Doc ID 17530 Rev 1
1/42
www.st.com
42
1 page  
LIS3DH
List of figures
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List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SPI slave timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
I2C Slave timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
LIS3DH electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Read and write protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SPI read protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Multiple bytes SPI read protocol (2 bytes example) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SPI write protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Multiple bytes SPI write protocol (2 bytes example) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SPI read protocol in 3-wires mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
LGA-16: Mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Doc ID 17530 Rev 1
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5 Page 
LIS3DH
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Mechanical and electrical specifications
2.2 Temperature sensor characteristics
Vdd =2.5 V, T=25 °C unless otherwise noted (b)
Table 4.
Symbol
Temperature sensor characteristics
Parameter
Test condition
TSDr
Temperature sensor output change vs
temperature
TODR Temperature refresh rate
Top Operating temperature range
1. Typical specifications are not guaranteed.
2. 8-bit resolution.
Min.
-40
Typ.(1)
1
ODR
Max.
+85
Unit
digit/°C(2)
Hz
°C
2.3 Electrical characteristics
Vdd = 2.5 V, T = 25 °C unless otherwise noted (c)
Table 5.
Symbol
Electrical characteristics
Parameter
Test conditions
Min.
Typ.(1)
Max. Unit
Vdd Supply voltage
Vdd_IO I/O pins supply voltage(2)
Idd Current consumption in normal mode
50 Hz ODR
Idd Current consumption in normal mode
1 Hz ODR
IddLP Current consumption in low-power mode 50 Hz ODR
IddPdn
Current consumption in power-down
mode
VIH Digital high level input voltage
VIL Digital low level input voltage
VOH High level output voltage
VOL
BW
Ton
Low level output voltage
System bandwidth(3)
Turn-on time(4)
ODR = 100 Hz
Top Operating temperature range
1.71 2.5 3.6 V
1.71 Vdd+0.1 V
11 µA
2 µA
6 µA
0.5 µA
0.8*Vdd_IO
0.9*Vdd_IO
-40
ODR/2
1
V
0.2*Vdd_IO V
V
0.1*Vdd_IO V
Hz
ms
+85 °C
1. Typical specification are not guaranteed.
2. It is possible to remove Vdd maintaining Vdd_IO without blocking the communication busses, in this condition the
measurement chain is powered off.
3. Referred to Table 25 for the ODR value and configuration.
4. Time to obtain valid data after exiting power-down mode.
b. The product is factory calibrated at 2.5 V.
c. The product is factory calibrated at 2.5 V. The operational power supply range is from 1.71 V to 3.6 V.
Doc ID 17530 Rev 1
11/42
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LIS3DH.PDF ] | |
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