MMA7260QR2 Freescale, MMA7260QR2 Datasheet - Page 4

• Manufacturer Part Number: MMA7260QR2
• Manufacturer: Freescale

Specifications of MMA7260QR2

• Package Type: QFN EP
• Operating Supply Voltage (min): 2.2V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature (min): -40C
• Operating Temperature (max): 105C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 6mm
• Product Height (mm): 1.45mm
• Product Length (mm): 6mm
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Compliant

4
Applet Name
Battery Save
Application
Imbalance
PC_Radio
Raw Data
Detection
Anti-Theft
Freefall
Scope
Name
Shock
Accel
Load
XYZ
Shows the X,Y, and Z axes raw A/D data, the interpolated voltage, as well as the associated acceleration
reading measured in g’s.
Shows either a 2-dimensional projection of the current X and Y axis readings or a 3-dimensional projection of
the X, Y, and Z axes.
A running chart of the X, Y, and Z axes readings on a traditional scope background.
Load imbalance shows the lateral movement in the X and Y plane and determines if an unbalanced condition
exists in a simulated washing machine application.
Application
Number
1
2
3
4
5
6
Table 1. Accelerometer Applications That Require a PC Connection
The application that communicates with the PC GUI.
The remote application that communicates to the PC_Radio.
Detects when the Z axis accelerometer is measuring approximately 0g’s. If a freefall is detected,
the accelerometer packet buzzer is turned on and a packet is sent from the Accelerometer
application on the Accelerometer board to the PC_Radio application on the PC_Radio board.
When the PC_Radio board receives the freefall indication from the Accelerometer Board, the
PC_Radio board’s buzzer and LED4 are turned on.
Detects movement in any of the X, Y, or Z axes.
On movement, the following occurs on the Accelerometer Board:
On movement in any axis, the Accelerometer Board sends a data packet to the PC_Radio Board
and the following occurs on the PC_Radio Board:
If the Accelerometer Board is tilted more than 15 degrees off of the default center position, the
buzzer is turned on and a data packet is sent to the PC_Radio Board which will then turn on its
buzzer and LED4.
The Battery Saver application shows how an application can take advantage of an accelerometer
being used as a power saving component on a battery operated board. The Accelerometer Board
simulates a board that is powered up by turning on its buzzer. When the Accelerometer Board is
not moved for at least 5 seconds, the board simulates powering down by turning off its buzzer.
Once the Accelerometer Board detects movement, the board simulates a power up and the
buzzer is again turned on. This is a good demonstration for a remote control board.
• For movement detected in the X axis, LED1 blinks once and the buzzer chirps once.
• For movement detected in the Y axis LED1 blinks twice and the buzzer chirps twice.
• For movement detected in the Z axis, LED1 blinks three times and the buzzer chirps three
• LED4 blinks once and the buzzer chirps once to indicate X axis movement.
• LED4 blinks twice and the buzzer chirps twice to indicate Y axis movement.
• LED4 blinks three times and the buzzer chirps three times to indicate Z axis movement.
Accelerometer Demonstration Application Note, Rev. 1.1
times.
Table 2. Standalone Accelerometer Applications
Description
Description
Freescale Semiconductor