Hi,
![](/cfs-file/__key/communityserver-discussions-components-files/73/pastedimage1691739230117v1.png)
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Hi,
As a starting point, can you please send me your schematic?
Hi Sanjay,
Due to confidentiality, I cannot share the complete design but whatever is related to the Touchscreen IC, I have shared below. I hope this helps you to understand.
Microcontroller section
Touch screen IC section
LCD Touch screen connector
Let me know any queries,
Regards,
Vihang Waze
1.Are the inductances in the schematic ferrite beads?
2. Are you using the PENIRQ to initiate operation? Have you seen the PENIRQ waveform when a touch is initiated?
Hi Sanjay,
1.Are the inductances in the schematic ferrite beads? Yes, the inductance in the schematics are ferrite beads - 742792693 - Descrp: 2.2 kOhms @ 100 MHz Signal Line Ferrite Bead 50mA 800mOhm
2. Are you using the PENIRQ to initiate operation? Yes, we are using PENIRQ to initiate operation.
Have you seen the PENIRQ waveform when a touch is initiated? Yes, we see the waveform when the we touch the resistive touch screen. But to get the waveform we have to apply a considerable amount of pressure on touch screen using finger to get the interrupt.
Regards,
Vihang Waze