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MMA7360L 데이터시트(PDF) 5 Page - Freescale Semiconductor, Inc

부품명 MMA7360L
상세설명  짹1.5g-6g Three Axis Low-g Micromachined Accelerometer
PDF  10 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MMA7360L 데이터시트(HTML) 5 Page - Freescale Semiconductor, Inc

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Sensors
Freescale Semiconductor
5
MMA7360L
BASIC CONNECTIONS
Pin Descriptions
Figure 4. Pinout Description
Figure 5. Accelerometer with Recommended
Connection Diagram
PCB Layout
Figure 6. Recommended PCB Layout for Interfacing
Accelerometer to Microcontroller
NOTES:
1. Use 0.1 µF capacitor on VDD to decouple the power
source.
2. Physical coupling distance of the accelerometer to
the microcontroller should be minimal.
3. Place a ground plane beneath the accelerometer to
reduce noise, the ground plane should be attached to
all of the open ended terminals shown in Figure 6.
4. Use a 3.3nF capacitor on the outputs of the
accelerometer to minimize clock noise (from the
switched capacitor filter circuit).
5. PCB layout of power and ground should not couple
power supply noise.
6. Accelerometer and microcontroller should not be a
high current path.
7. A/D sampling rate and any external power supply
switching frequency should be selected such that
they do not interfere with the internal accelerometer
sampling frequency (11 kHz for the sampling
frequency). This will prevent aliasing errors.
Table 4. Pin Descriptions
Pin No.
Pin Name
Description
1
N/C
No internal connection
Leave unconnected
2XOUT
X direction output voltage
3YOUT
Y direction output voltage
4ZOUT
Z direction output voltage
5
VSS
Power Supply Ground
6VDD
Power Supply Input
7Sleep
Logic input pin to enable product or Sleep Mode
8
NC
No internal connection
Leave unconnected
9
0g-Detect
Linear Freefall digital logic output signal
10
g-Select
Logic input pin to select g level
11
N/C
Unused for factory trim
Leave unconnected
12
N/C
Unused for factory trim
Leave unconnected
13
Self Test
Input pin to initiate Self Test
14
N/C
Unused for factory trim
Leave unconnected
2
7
8
9
10
11
12
13
14
N/C
XOUT
ZOUT
YOUT
VSS
VDD
Sleep
N/C
0g-Detect
g-Select
Self Test
N/C
N/C
N/C
1
3
4
5
6
Top View
2
3
4
3.3 nF
3.3 nF
3.3 nF
13
10
6
5
7
Logic
Input
Logic
Input
Logic
Input
0.1 µF
VDD
VDD
VSS
g-Select
Self Test
Sleep
XOUT
YOUT
ZOUT
MMA7360L
9
0g-Detect
POWER SUPPLY
VDD
VSS
Sleep
g-Select
0g-Detect
XOUT
YOUT
ZOUT
VDD
VSS
VRH
P0
P1
P2
A/DIN
A/DIN
A/DIN
C
C
C
C
C
C
C
C
Self Test
P3



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