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Forum Post: RE: TSC2007: Non-responsive TSC

Hello, we didn't any power cycle during our test. We only "played" with i2c commands for a while, trying different values in Command Byte. I cannot say precisely all the steps we did, but suddenly the touchscreen started to provide valid X&Y values. After this moment, the TSC2007 has kept providing correct information even after power cycles or with old source code. I2C runs at 85kbps. The VDD on ramp in our board is not satisfied (it's 1kV/s), but let me say 12kV/s is insane! VDD is by definition slow, as it's plenty of decoupling capacitors around the board. 12kV/s requires an external logic to drive separately the TSC2007 power supply: basically we should create an externally POR circuit to drive TSC2007 internal POR.. Is it possibile to force a software reset by I2C? Regards

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