MMA7456L Ver la hoja de datos (PDF) - Freescale Semiconductor

Número de pieza

componentes Descripción

Lista de partido

MMA7456L

±2g/±4g/±8g Three Axis Low-g Digital Output Accelerometer

Freescale Semiconductor 

VVdDdD

10uF

0.1uF

10uF VVdDd_DIO

0.1uF

MCU

SSPLCC/SPC

GND

SDA/SDI/SDO

SDO

INT2

INT1/DRDY

Figure 16. SPI Connection to MCU

NOTES:

1. Use a 0.1 μF and a 10 μF capacitor on AVDD to and DVDD_IO to decouple the power source.

2. Physical coupling distance of the accelerometer to the microcontroller should be minimal.

3. PCB layout of power and ground should not couple power supply noise.

4. Accelerometer and microcontroller should not be a high current path.

5. Any external power supply switching frequency should be selected such that they do not interfere with the internal

accelerometer sampling frequency (sampling frequency). This will prevent aliasing errors.

6. Physical distance of the two GND pins (Pin2 and Pin5) tied together should be at the shortest distance.

MMA7456L

20

Sensors

Freescale Semiconductor

Share Link: