Newhaven Display Forum

Newhaven Products => TFTs => Topic started by: JeffJway on July 06, 2015, 10:49:15 PM

Title: NHD-1.8-128160EF-CTXI-FT Wakeup from sleep
Post by: JeffJway on July 06, 2015, 10:49:15 PM
I have a question about the NHD-1.8-128160EF-CTXI-FT

I know that I can send the LCD to sleep with the command 0x10 to the LCD, but can you advise me if the Touchscreen is also disabled? Will I still be able to detect if the Touchscreen is touched during Sleep mode?

I have an external IC to handle the Touchscreen data (Semtech's SX8651) and I would like for the user to be able to wake the LCD from sleep mode with a tap on the touch screen.

Is this possible? Will sending the LCD to sleep mode with the 0x10 command cause the touchscreen layer to also turn off and thus not be able to detect screen touches? If I can still detect screen touches or there is a way to enable the touch detection even in sleep mode, is there any significant additional power consumption?

Title: Re: NHD-1.8-128160EF-CTXI-FT Wakeup from sleep
Post by: Michael_L on July 07, 2015, 01:57:29 PM
The resistive touch panel is completely separate from the display's controller.  Therefore, you can interpret touches even when the display is in sleep mode, because the 4 lines for the resistive touch panel are independent from the display, and fed directly into your Semtech touch controller.