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PDF LSM303DLMTR Data sheet ( Hoja de datos )
| Número de pieza | LSM303DLMTR | |
| Descripción | 3-axis accelerometer and 3-axis magnetometer | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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LSM303DLM
Sensor module:
3-axis accelerometer and 3-axis magnetometer
Preliminary data
Features
■ Analog supply voltage: 2.16 V to 3.6 V
■ Digital supply voltage IOs: 1.8 V
■ Power-down mode
■ 3 magnetic field channels and 3 acceleration
channels
■ ±1.3 to ±8.1 gauss magnetic field full-scale
■ ±2 g/±4 g/±8 g dynamically selectable full-
scale
■ High performance g-sensor
■ I2C serial interface
■ 2 independent programmable interrupt
generators for free-fall and motion detection
■ Accelerometer sleep-to-wakeup function
■ 6D orientation detection
■ ECOPACK®, RoHS, and “Green” compliant
Applications
■ Compensated compass
■ Map rotation
■ Position detection
■ Motion-activated functions
■ Free-fall detection
■ Intelligent power-saving for handheld devices
■ Display orientation
■ Gaming and virtual reality input devices
■ Impact recognition and logging
■ Vibration monitoring and compensation
Description
The LSM303DLM is a system-in-package
featuring a 3D digital linear acceleration sensor
and a 3D digital magnetic sensor.
LGA-28L (5x5x1.0 mm)
The various sensing elements are manufactured
by using specialized micromachining processes,
while the IC interfaces are realized using a CMOS
technology that allows the design of a dedicated
circuit which is trimmed to better match the
sensing element characteristics. The
LSM303DLM has a linear acceleration full-scale
of ±2 g / ±4 g / ±8 g and a magnetic field full-scale
of ±1.3 / ±1.9 / ±2.5 / ±4.0 / ±4.7 / ±5.6 / ±8.1
gauss, both fully selectable by the user.
The LSM303DLM includes an I2C serial bus
interface that supports standard mode (100 kHz)
and fast mode (400 kHz). The system can be
configured to generate an interrupt signal by
inertial wakeup/free-fall events, as well as by the
position of the device itself. Thresholds and timing
of interrupt generators are programmable on the
fly by the end user.
Magnetic and accelerometer parts can be
enabled or put into power-down mode separately.
The LSM303DLM is available in a plastic land grid
array package (LGA), and is guaranteed to
operate over an extended temperature range from
-40 to +85 °C.
Table 1. Device summary
Part number
Temp.
range
[°C]
Package Packing
LSM303DLM
LSM303DLMTR
-40 to +85
LGA-28
Tray
Tape and
reel
April 2011
Doc ID 018725 Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
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www.st.com
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1 page  
LSM303DLM
List of tables
Table 49.
Table 50.
Table 51.
Table 52.
Table 53.
Table 54.
Table 55.
Table 56.
Table 57.
Table 58.
Table 59.
Table 60.
Table 61.
Table 62.
Table 63.
Table 64.
Table 65.
Table 66.
Table 67.
Table 68.
INT2_SRC_A description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
INT2_THS register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
INT2_THS description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
INT2_DURATION_A register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
INT2_DURATION_A description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
CRA_REG_M register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
CRA_REG_M description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Data rate configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
CRA_REG register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Gain setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
MR_REG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
MR_REG description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Magnetic sensor operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
SR register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
SR register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
IRA_REG_M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
IRB_REG_M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
IRC_REG_M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
WHO_AM_I_M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Doc ID 018725 Rev 1
5/38
5 Page 
LSM303DLM
Module specifications
2.3 Communication interface characteristics
2.3.1
Sensor I2C - inter IC control interface
Subject to general operating conditions for Vdd and top.
Table 5. I2C slave timing values
Symbol
Parameter
I2C standard mode (1)
Min.
Max.
f(SCL)
tw(SCLL)
tw(SCLH)
tsu(SDA)
th(SDA)
SCL clock frequency
SCL clock low time
SCL clock high time
SDA setup time
SDA data hold time
0 100
4.7
4.0
250
0.01 3.45
tr(SDA) tr(SCL) SDA and SCL rise time
1000
tf(SDA) tf(SCL) SDA and SCL fall time
300
th(ST)
tsu(SR)
START condition hold time
Repeated START condition
setup time
4
4.7
tsu(SP)
STOP condition setup time
4
tw(SP:SR)
Bus free time between STOP
and START condition
4.7
1. Data based on standard I2C protocol requirement, not tested in production.
2. Cb = total capacitance of one bus line, in pF.
I2C fast mode (1)
Min.
Max.
0 400
1.3
0.6
100
0.01 0.9
20 + 0.1Cb(2)
20 + 0.1Cb(2)
0.6
300
300
0.6
0.6
1.3
Unit
KHz
µs
ns
µs
ns
µs
Figure 3. I2C slave timing diagram (b)
6'$
67$57
5(3($7('
67$57
WVX 65
WZ 63 65
67$57
WI 6'$
6&/
WU 6'$
WVX 6'$
WK 6'$
WVX 63
6723
WK 67 WZ 6&//
WZ 6&/+
WU 6&/
WI 6&/
b. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both ports.
Doc ID 018725 Rev 1
11/38
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| PDF Descargar | [ Datasheet LSM303DLMTR.PDF ] | |
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