ILI9341 TFT display controler

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Anybody know if this thing has a low power shut down mode? Perhaps I should provide a PFET to turn the thing off?

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Anybody know if this thing has a low power shut down mode?

Didja look in the datasheet?

 

 

 

Interestingly, I cannot seem to finsd a number for sleep mode current.  Standby is 100uA

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Does this command affect the LCD screen backlight LEDs, or only the controller, or both?  Often this TFT controller is found on the 2.2" 320x240 modules (and possibly other inch-board sizes).  It uses Adafruit TFTv2 library.   The SPI versions of this TFT board have an LED pin that *I believe* is internally connected to a transistor that controls the brightness background LED(s).  If this proves to be the case, then using a PWM signal on this pin (LEDBK) would control the screen's power usage if the sleep command only turns off the controller IC. 

 

Anyone here know more about this stuff?

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As Lee pointed out it has sleep mode that you can use for your job.

 

You are right Simonetta BUT:

What do you mean "internally"?

within the IC controller?

or on board?

if on board, there is no transistor. totally you need to control the background LEDs separately.

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I could have looked all day and not seen something that obvious

 

The backlight LEDs, at least on this display, are controlled by the processor, not the ILI chip. I know not why, but that's how this display is built.

The largest known prime number: 282589933-1

In my humble opinion, I'm always right. 

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It's the same on the display I use, the back-light is not controlled by the controller, I think that it's simply a sandwich: back light , display with controller, and touch.

I can see it on my flex-cable back-light and touch are soldered on to the display tail.