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TSC2007:21/12/25

Shinya Matsui
Prodigy 10 points
Part Number: TSC2007
I'm using TSC2007 for LCD operation
While touching the touch panel of the LCD and moving it
There is a phenomenon that the coordinates are raised differently from the swiping point. Please give us your opinion on what kind of problem you have.
For example, can you think that the reference voltage is unstable due to insufficient GND?

Also, TSC2007 can calculate the touch pressure. Is this applicable to all 4-wire resistance film touch screens?

Also, looking at the waveform, it seems that the coordinate data is acquired as if it were 20ms. Can you tell me the measurement order of each voltage of X coordinate, Y coordinate, Z1 value, Z2 value?
  • 0
    TI__Genius 13610 points

    Hello,

    Right now our experts are out of office until Dec. 28th due to Holidays.

    We will get back to your question as soon as possible when we resume operations.

    Happy Holidays

    LPA Applications Team

  • 0
    TI__Mastermind 23030 points

    Do you mean that the Touch coordinates obtained are different from what you expect from touching a particular point on the screen?

    Sometimes external components connected to the touch screen connections can also impact the performance.

    Can you please send me the X,Y Coordinates obtained on the  4 corners of the screen? 

    Can you also send me the schematic?