Data Sheet

VMA208
V. 02 – 07/03/2018 3 ©Velleman nv
5. Overview
VMA208
This is a MMA8452Q accelerometer module. The MMA8452Q is a smart low-power, three-axis, capacitive
MEMS accelerometer with 12 bits of resolution. It is packed with embedded functions with flexible user
programmable options, configurable to two interrupt pins. Embedded interrupt functions allow for overall
power savings relieving the host processor from continuously polling data. It has user-selectable full scales of
+-2g/+-4g/+-8g w ith high-pass filtered data, as w ell as non-filtered data available real-time This board,
breaks out the ground, power, I2C and two external interrupt pins, which make it easy to use in project.
1.95 V to 3.6 V supply voltage
1.6 V to 3.6 V interface voltage
+-2g/+-4g/+-8g dynamically selectable full-scale
Output Data Rates (ODR) from 1.56 Hz to 800 Hz
12-bit and 8-bit digital output
I2C digital output interface (operates to 2.25 MHz with 4.7 kΩ pullup)
two programmable interrupt pins for six interrupt sources
three embedded channels of motion detection
orientation (portrait/landscape) detection with set hysteresis
high pass filter data available real-time
current consumption: 6 µA - 165 µA
6. Pin Layout
3.3V
Power output – 3.3 V output.
Vcc
Power supply – It should be between 3 and 5 V.
SDA
I2C data signal – Bi-directional data line. Voltage should not exceed power
supply.
SCL
I2C clock signal – Master-controlled clock signal. Voltage should not exceed
power supply.
SA0
I2C address – I2C least significant bit of the device I2C address.
I2
Interrupt 2 – Programmable interrupt. Can indicate data ready, orientation
change, tap, and more.
I1
Interrupt 1 – Programmable interrupt. Can indicate data ready, orientation
change, tap, and more.
GND
Ground – 0 V/common voltage.
7. Example
Please download the library and code from the product page on www.velleman.eu.
8. More Information
Please refer to the VMA208 product page on www.velleman.eu for more information.
Use this device with original accessories only. Velleman nv cannot be held responsible in the event
of damage or injury resulting from (incorrect) use of this device. For more info concerning this
product and the latest version of this manual, please visit our website www.velleman.eu. The
information in this manual is subject to change without prior notice.
© COPYRIGHT NOTICE
The copyright to this manual is owned by Velleman nv. All worldwide rights reserved. No part of this
manual may be copied, reproduced, translated or reduced to any electronic medium or otherwise w ithout the
prior written consent of the copyright holder.