LFSTBEB865X Freescale Semiconductor, LFSTBEB865X Datasheet - Page 61

• 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

Freescale Semiconductor, Inc.
Screen frame
configuration
indicator
(Read only)
FIFO mode
FIFO status
FIFO data
Disabled
option button
Fill Buffer
option button
Circular Buffer
option button
Trigger Mode
option button
Set Watermark
Reset Watermark
Watermark slider
Trigger source
• Trigger Transient
• Tripper LP
• Trigger Tap
• Trigger MFF
Trigger event
indicator
• Transient
• LP
• Tap
• MFF
Current FIFO Count Displays the number of samples currently stored in the FIFO.
Overflow Flag
Watermark Flag
• View 8-Bit Data
• View 12-Bit Data
Data Display textbox Displays data dumped from the FIFO.
Clear
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Field or option
Table 19. Full-System Evaluation – FIFO screen
MMA865xFC Sensor Toolbox User’s Guide, Rev. 0
Disables the FIFO.
Enable the FIFO and choose Fill mode.
Fills the FIFO with data, dumps that data to the text field on the right, and begins filling
the FIFO again.
Enable the FIFO and choose Circular mode.
Fills the FIFO with data until it is full, and then begins overwriting the oldest data, each
time that new data is received.
Enable the FIFO and choose Trigger mode.
Collects data in the Circular mode up to the watermark. When the trigger event occurs,
the device fills the rest of the FIFO with data, and then stops taking data.
(The trigger source is listed under Trigger source.)
Click Set Watermark to register the new settings with the device.
Click Reset Watermark to enable a new configuration.
Sets the FIFO count after which the Watermark Flag activates.
When the Trigger Mode option button is selected, choose one of these trigger sources to
trigger the FIFO to store accelerometer data:
• Transient (shake)
• LP (landscape/portrait)
• Tap
• MFF (Motion/Freefall)
The indicators switch from red to green to indicate that the following events have been
detected:
• Transient (shake)
• LP (landscape/portrait)
• Tap
• MFF (Motion/Freefall)
The indicator switches from red to green to indicate that the FIFO has begun overwriting
data in the Circular Buffer mode.
The indicator switches from red to green to indicate that a watermark event has occurred.
Specifies the bit resolution to be used when reading data from the FIFO and displayed in
the text field.
A higher bit count produces more-precise values, but requires more time and power.
• 8-Bit — Dumps only the 8 bits stored in the X, Y, and Z MSB registers
• 12-Bit — Dumps the 8 MSB bits and the 4 bits stored in the X, Y, and Z LSB registers.
Clear the FIFO data from the textbox.
Copy all the FIFO data that has been running under the current configuration to the
clipboard. You can access this data by copying them to an Excel spreadsheet.
Description
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