LFSTBEB865X Freescale Semiconductor, LFSTBEB865X Datasheet - Page 40

• Manufacturer Part Number: LFSTBEB865X
• Description: Acceleration Sensor Development Tools EVB FOR MMA865xQ
• Manufacturer: Freescale Semiconductor

Specifications of LFSTBEB865X

• Rohs: yes
• Tool Is For Evaluation Of: MMA8652FC, MMA8653FC
• Acceleration: 2 g, 4 g, 8 g
• Sensing Axis: Triple Axis
• Interface Type: USB

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Transient
Settings
Screen
frame
Default Transient
Settings
Bypass HPF
Threshold
Debounce
• Enable X SP
• Enable Y SP
• Enable Z SP
Enable Latch
Decrement
Debounce
Clear Debounce
Set
Reset
Field or option
Table 11. Directional Shake – Active/Standby screens (Continued)
Returns the demo parameters for detecting shakes to the default settings (configured at the
factory).
HPF = High-Pass Filter
Sends the raw accelerometer data to the shake application, bypassing the high-pass filter.
Sets the threshold for flick events to be detected. Flicks at a smaller g-force than this value
are filtered out.
Sets the amount of time that the configured conditions must be in place to trigger the main
flick event. Any event whose duration does not exceed this time will not trigger an interrupt.
(Enable Single Pulse)
Allows flicks along these axes to trigger the “Event Detected” Indicator on the Demo Screen.
Note: Only the Y axis will move the pictures and correctly trigger the direction indicator.
Causes any triggered event to remain until the Status register is read.
If the Enable Latch checkbox is not enabled, then:
Select to decrement the Debounce timer each time that an event fails to reach the debounce
time.
Select to reset the timer set by the Debounce slider each time that an event fails to reach
the debounce time.
Saves the new configuration of the Threshold and Debounce sliders.
After changing the values of the Threshold and Debounce sliders,
click Set to implement the settings.
Enables a new configuration of the Threshold and Debounce sliders.
Before changing the settings of the Threshold and Debounce sliders,
click Reset.
• Normally, the Bypass HPF option button should be cleared.
• Enabling the Bypass HPF can cause non-shake events (such as tilting the device) to be
• Before using the Threshold slider, you must first click the Reset button.
• After using the Threshold slider, click the Set button to change the setting.
• Before using the Debounce slider, you must first click the Reset button.
• After using the Debounce slider, click the Set button to change the setting.
• the interrupt will only last as long as the event
• the Status register will represent the most-recent event
MMA865xFC Sensor Toolbox User’s Guide, Rev. 0
registered as shakes.
If enabled, the X and Z axes will trigger only the Event Detected indicator on the
Demo screen.
Description
Freescale Semiconductor, Inc.