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BASIC CONNECTIONS
Pin Descriptions
Top View
PCB Layout
N/C
POWER SUPPLY
N/C
X OUT
Y OUT
GND
N/C
N/C
V DD
V SS
Sleep
C
C
V RH
P0
V DD
V SS
C
N/C
V SS
V DD
g-Select
N/C
N/C
g-Select
GND
P1
Sleep
Figure 4. Pinout Description
X OUT
Y OUT
C
C
A/D IN
A/D IN
Table 4. Pin Descriptions
Pin No. Pin Name
Description
Figure 6. Recommended PCB Layout for Interfacing
1
2
3
4
5
6
7
8
9
10
11
12
13
14
N/C
X OUT
Y OUT
N/C
V SS
V DD
Sleep
N/C
N/C
g-Select
N/C
N/C
GND
N/C
No internal connection
Leave unconnected
X direction output voltage
Y direction output voltage
No internal connection
Leave unconnected
Power Supply Ground
Power Supply Input
Logic input pin to enable product or Sleep Mode
No internal connection
Leave unconnected
No internal connection
Leave unconnected
Logic input pin to select g level
Unused for factory trim
Leave unconnected
Unused for factory trim
Leave unconnected
Connect to Ground
Unused for factory trim
Leave unconnected
Accelerometer to Microcontroller
NOTES:
1. Use 0.1 μF capacitor on V DD 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 3.3 nF 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.
Logic
Input
10
g-Select
8. 10 M Ω or higher is recommended on X OUT and Y OUT
VDD
13
6
MMA6331L
GND
XOUT
VDD
2
3.3 nF
to prevent loss due to the voltage divider relationship
between the internal 32 k Ω resistor and the
measurement input impedance.
0.1 μF
5
VSS
YOUT
3
3.3 nF
Logic
Input
7
Sleep
Figure 5. Accelerometer with Recommended
Connection Diagram
MMA6331L
Sensors
Freescale Semiconductor
5
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相关代理商/技术参数
MMA6341LR1 功能描述:加速计 - 板上安装 3g-8g XY-Axis Low g RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6341LR2 功能描述:加速计 - 板上安装 3G-9G XY-AXIS LOW G RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6341LT 功能描述:加速计 - 板上安装 3G-9G XY-AXIS LOW G RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6361L 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:?±1.5g, ?±6g Two Axis Low-g Micromachined Accelerometer
MMA6361LR1 功能描述:加速计 - 板上安装 1.5 XY LGA 14 LD ENH RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6361LR2 功能描述:加速计 - 板上安装 1.5 XY LGA 14 LD ENH RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6361LT 功能描述:加速计 - 板上安装 1.5G XY LGA 14 LDS ENH RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6519KW 功能描述:加速计 - 板上安装 XY-AXIS 80/ 80G RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C