In the development of electronic devices and control systems often need to be aware of the position of the projected system in space (the position of the display to specify portrait or landscape mode, aircraft modeling, etc.), or on the occurrence of abnormal situations in the operation of the system (shock, vibration, etc.). To solve this problem has now become possible using acceleration sensors, which are widely used in recent years. However, their application at an early stage of development is limited to the size of the sensor itself - usually acceleration sensors available in miniature surface mount package (LGA-xx), which makes it impossible to install using common tools (soldering iron).

This module is the acceleration sensor MMA7660FC - a board with pre-installed sensor and external components. All control signals and power supply circuits are derived by a standard 9-pin connector with pitch 2.54 mm, which allows easy connection of sensors to an existing system or breadboard. The board has a small size 23mm x 12.7mm.

The MMA7660FC is a ±1.5 g 3-Axis Accelerometer with Digital Output (I2C). It is a very low power, low profile capacitive MEMS sensor featuring a low pass filter, compensation for 0g offset and gain errors, and conversion to 6-bit digital values at a user configurable samples per second. The device can be used for sensor data changes, product orientation, and gesture detection through an interrupt pin (INT). The device is housed in a small 3mm x 3mm x 0.9mm DFN package.

On board there are two voltage regulators 1.8V and 3V (these voltages are needed for normal operation MMA7660FC) - it allows you to use the board in the voltage range 2.6 V, 5.5B. Outputs of voltage regulators are connected to extension pins, that allows you to use this voltage to supply external devices with power consumption of up to 150mA. The board also establishes level-shift circuit I2C interface, which shifts the levels of SDA and SCL signals to the voltage level of VIN (voltage at the input of the voltage regulators). This allows you to use a board with 3V and 5V systems without risk of damage the sensor LSM303DLH

Typical Applications:

Mobile Phone/ PMP/PDA: Orientation Detection (Portrait/Landscape)
Image Stability, Text Scroll, Motion Dialing, Tap to Mute
Laptop PC: Anti-Theft
Gaming: Motion Detection, Auto-Wake/Sleep For Low Power
Consumption
Digital Still Camera: Image Stability

Features:

Wide supply voltage 2,4-5,5 V. When the sensor is powered by installed on the board voltage regulators. It is also possible to supply the analog sensor external voltage 2.4 V-3, 6V, and a digital 1.71V-3, 6V
Digital Output (I2C)
3mm x 3mm x 0.9mm DFN Package
Low Power Current Consumption: Off Mode: 0.4 µA,
Standby Mode: 2 µA, Active Mode: 47 µA at 1 ODR
Configurable Samples per Second from 1 to 120 samples a second.
Auto-Wake/Sleep Feature for Low Power Consumption
Tilt Orientation Detection for Portrait/Landscape Capability
Gesture Detection Including Shake Detection and Tap Detection
Robust Design, High Shocks Survivability (10,000 g)
±1.5 g 3-Axis Accelerometer
Small board size 23mm x 12.7mm
All control signals and power supply pins on 7-pin connector with pitch 2.54 mm
3V and 1V8 voltage regulators on-board
With the SMD jumpers it is possible to select the source voltage (external or from the set on the board 3V voltage regulator).
Level-shift circuit for I2C
mounting hole 2.1mm diameter

Documentation:

Schematic of MMA7660FCL module - http://www.bravekit.com/document/accelerometers/MMA7660/MMA7660%20Schematic.pdf
Assembly drawnings - http://www.bravekit.com/document/accelerometers/MMA7660/MMA7660%20Assembly.pdf
Datasheet for MMA7660FC - http://www.bravekit.com/document/accelerometers/MMA7660/MMA7660FC.pdf