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TSC2007: PENIRQ output oscillation No.2

Part Number: TSC2007

Tool/software:

Hi support team all.

I've tried following the advice I received in the post below, but it didn't improve, so I'm posting again in a new thread.

 TSC2007: PENREQ output oscillates 

I've recently discovered that when sending I2C commands, the X+ and Y- lines vibrate in sync with the communication cycle.

Has this ever happened before?
I'm sending four commands in the order below, and it appears to respond to commands No.1 and No.4.

Output PENIRQ oscillation.pdf

I'd really appreciate any help you can give me.

Best regards,

DH