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L3GD20TR Datasheet(PDF) 7 Page - STMicroelectronics

Part # L3GD20TR
Description  MEMS motion sensor: three-axis digital output gyroscope
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L3GD20TR Datasheet(HTML) 7 Page - STMicroelectronics

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L3GD20
Block diagram and pin description
Doc ID 022116 Rev 1
7/44
1
Block diagram and pin description
Figure 1.
Block diagram
Note:
The vibration of the structure is maintained by drive circuitry in a feedback loop. The sensing
signal is filtered and appears as a digital signal at the output.
1.1
Pin description
Figure 2.
Pin connection
FIFO
TRIMMING
CIRCUITS
REFERENCE
MIXER
CHARGE
AMP
CLOCK
LOW-PASS
FILTER
+Ω
x,y,z
I2C
SPI
CS
SCL/SPC
SDA/SDO/SDI
SDO
Y+
Z+
Y-
Z-
X+
X-
DRIVING MASS
Feedback loop
M
U
X
A
D
D
C
I
G
I
T
A
L
F
I
L
T
E
R
I
N
G
CONTROL LOGIC
&
INTERRUPT GEN.
INT1
DRDY/INT2
A
D
C
T
E
M
P
E
R
A
T
U
R
E
S
E
N
S
O
R
1
2
&
PHASE GENERATOR
AM10126V1
(TOP VIEW)
DIRECTIONS OF THE
DETECTABLE
ANGULAR RATES
X
Vdd_IO
SCL/SPC
SDA/SDI/SDO
SDO/SA0
RES
RES
RES
RES
1
8
12
5
4
9
13
16
+Ω
Z
+Ω
X
BOTTOM
VIEW
+Ω
Y
AM10127V1


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