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LSM303DLM 数据表(PDF) 15 Page - STMicroelectronics

部件名 LSM303DLM
功能描述  Sensor module:3-axis accelerometer and 3-axis magnetometer
PDF  38 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LSM303DLM 数据表(HTML) 15 Page - STMicroelectronics

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LSM303DLM
Application hints
Doc ID 018725 Rev 1
15/38
6
Application hints
Figure 4.
LSM303DLM electrical connection - recommended for I2C fast mode
6.1
External capacitors
The C1 and C2 external capacitors should have a low SR value ceramic type construction.
Reservoir capacitor C1 is nominally 4.7 µF in capacitance, with the set/reset capacitor C2
nominally 0.22 µF in capacitance.
The device core is supplied through the Vdd line. Power supply decoupling capacitors
(C4=100
nF ceramic, C3=10 µF Al) should be placed as near as possible to the supply pin
of the device (common design practice). All the voltage and ground supplies must be
present at the same time to obtain proper behavior of the IC (refer to
Figure 4).
The functionality of the device and the measured acceleration/magnetic field data is
selectable and accessible through the I2C interface.
The functions, the threshold, and the timing of the two interrupt pins (INT 1 and INT 2) can
be completely programmed by the user through the I2C interface.
DIRECTIONS OF
DETECTABLE
MAGNETIC FIELDS
DIRECTIONS OF
DETECTABLE
ACCELERATIONS
RES
RES
GND
(TOP VIEW)
4
1
8
VDD
SDA_M
NC
SCL_M
SET1
RES
DRDY_M
LSM303DLM
SA0
1
7
28
22
21
15
C1
C2=0.22uF
GND
C1=4.7uF
Vdd_IO
Vdd
C4 = 100uF
C3 = 10uF
Y
X
Z
1
Y
X
Z
1
NC
GND
Vdd_IO
Rpu
Electrical connection
Rpu=10kOhm
Vdd_IO
Rpu
Rpu=10kOhm
AM09240V1



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