AT42QT2120 Touch interfacing with AVR

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Hello,

 

I have some issues related ATMEL's Touch IC.

 

Controller used - ATMEGA4809

Touch IC AT42QT2120

Communication interfacing - TWI

IDE used - Microchip Studio

 

1. How to wake up controller from sleep mode using touch IRQ?

2. Power optimization method for this IC.

 

If anyone has already worked on it, please suggest me the solutions and references for this.

 

Thanks  & Regards

Ekta