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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
3.2.9 Three-axis-accelerometer
The SMB380 is a triaxial low-g acceleration sensor IC with digital output for motion
applications. It allows measurements of acceleration in perpendicular axes as well as absolute
temperature measurement. If Motion is detected, then interrupt is issued to CPU and CPU
read its motion value by I2C(SMB_SDA,SMB_SCL) interface.
Rev.H
R807
390
CSB
5
GND
3
4
INT
NC1
1
1
0
NC2
11
NO
T1
NO
T2
12
SCK
6
8
SDI
7
SDO
VDD
2
VDDIO
9
C804
U801
BMA150
22n
VDDH_SMB_2V75
VDDE_1V8
0.1u
C803
APP_GP_3AXIS_SDA
APP_GP_3AXIS_SCL
APP_GP_3AXIS_INT
Figure 3-2-11. Three-axis-acceleromete Circuit