MMA7455 Parallax, Inc., MMA7455 Datasheet - Page 5

• Manufacturer Part Number: MMA7455
• Description: Mma7455 3-axis Accelerometer Module
• Manufacturer: Parallax, Inc.

Module Schematic
Quick Start Guide
The following is a very basic procedure to get started initializing and reading values from the Digital 3-
Axis Accelerometer module. All the features of the MMA7455L accelerometer are covered in full detail in
the Freescale Semiconductor MMA7455L device datasheet. Example test code as well as more advanced
code demonstrations of this device for the Propeller and Basic Stamp can be found on the 28526 product
page at www.parallax.com.
Copyright © Parallax Inc.
1. With main power off, make the proper connections between the accelerometer and a
microcontroller as shown below according to whether SPI or I
to the VIN pin should be the same as the voltage powering the microcontroller communicating
with the device. The value of the pull-up resistors used in I
rate, and the total capacitance of the bus. A reasonable starting value for each pull-up resistor is
4.7kΩ. This value may need to be reduced if many devices are connected on the bus (which
increases the bus capacitance), or if high data rates are required.
MMA7455 3-Axis Accelerometer Module (#28526)
2
C mode depend on the desired data
2
C is used. The voltage connected
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