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  • ADS7843: resistive screen controller data readings affected by varying pressure

    TI Thinks Resolved
    Part Number: ADS7843 On my ADS7843 based systems, I notice that the raw X value changes with pressure. Specifically, near the left edge of the screen, increasing pressure causes the raw X value to decrease, when near the right edge of the screen, increasing…
    • Answered

  • ADS7843: Initial settings

    Resolved
    Part Number: ADS7843 Hi support team. I have some question from my customer below. - Are settings immediately after startup of PD0 / PD1 "00" or "11"? I would like to know the initial settings of PDx. - Is there a limit to the VCC…
    • Resolved

  • ADS7843: ADS7843 giving improper touch coordinates

    Part Number: ADS7843 We are using ADS7843 as a touchscreen controller. The IC does not give proper touch co-ordinates at least 1 time per 20 detection cycles. We have made sure that the routing of the IC is according to the application note provided by…
    • Answered

  • ADS7843: ADS7843 EVB

    Resolved
    Part Number: ADS7843 Other Parts Discussed in Thread: ADS7845 Hi, I would like to ask a few questions about the ADS7843 EVB circuit: 1. Are the Analog and Digital Workspace in the EVB circuit connected to the breadboard? 2. The Analog part of the circuit…
    • Resolved

  • ADS7843: issue with some resistive touch screens that are being controlled by ADS7843 component

    Part Number: ADS7843 Hello, We have an issue with some resistive touch screens that are being controlled by the Texas Instrument ADS7843 component. The touch screens being tested are faulty: the resistive values of the X axis on the right side got higher…

  • RE: ADS7843: calibration in ads7843

    Hi Kanchan, So to confirm, you're receiving random outputs from the ADS7843, even when holding your finger/pen in a constant location? Could you share a capture of the SPI communication while this is happening? Also, you may want to consider a slightly…

  • ADS7843: recommendation for display controller

    TI Thinks Resolved
    Part Number: ADS7843 Other Parts Discussed in Thread: ADS7845 , TSC2004 , TSC2005 , TSC2007 , TSC2003 Hello team, I'm looking for a controller for resistivity touch screen with 4/5 wires which has Linux drivers (welcome are also for Windows EC7 ARM and X86…
    • Answered

  • ADS7843：ADS7843 IN3 & IN4

    Resolved
    Part Number: ADS7843 ADS7843 IN3 & IN4 not use. IN3 & IN4 Whether floating
    • Resolved

  • ADS7843: Conflict of SPI and PENIRQ

    Part Number: ADS7843 I use ADS7843in my scheme. When I working with it, there were problems: at some moment the pin PENIRQ stops working (does not respond to touch press). I use ATmega88PA and Mikroc Pro for AVR. The code for the conversion is as follows…

  • Compiler/ADS7843: ADS7843

    TI Thinks Resolved
    Part Number: ADS7843 Tool/software: TI C/C++ Compiler Dear all, I have some questions about ADS7843 need to solve,description is as follows: I am using ADS7843 connecting four-wire resistive screen, When using interrupt configuration can be read…

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