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rudy
Joined: 27 Apr 2008
Posts: 167
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| PIC controlling a notebook screen |
 Posted: Sun Dec 12, 2010 12:00 pm |
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A friend gave to me an old Toshiba notebook, and I want to make it work again. But, it have a nice LCD screen, SHARP LQ150X1LH66. Is there any possibility to control this LCD with a PIC? I am very excited to do a big wall clock with this.
Best regards. |
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FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
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| Posted: Sun Dec 12, 2010 12:54 pm |
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| TFT displays have either digital parallel or serial high speed (LVDS) interfaces for the video data. In either case, the image has to be output repeatedly from a frame buffer, with a repetition rate similar to an analog video display. You need a standard TFT controller, or a custom designed video generator (e.g based on FPGA programmable logic). A PIC can neither handle the data rate nor the amount of video memory. |
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bkamen
Joined: 07 Jan 2004
Posts: 1615
Location: Central Illinois, USA
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| Posted: Sun Dec 12, 2010 1:26 pm |
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| FvM wrote: | | TFT displays have either digital parallel or serial high speed (LVDS) interfaces for the video data. In either case, the image has to be output repeatedly from a frame buffer, with a repetition rate similar to an analog video display. You need a standard TFT controller, or a custom designed video generator (e.g based on FPGA programmable logic). A PIC can neither handle the data rate nor the amount of video memory. |
Oh Contrare mon frair (spelling?)
Look at the PIC24FJ256DA210
The 16bit PIC with integrated display controller w/frame buffer.
http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en547869
Granted, it's max rez might be less than a notebook though (640x480)...
But -- just an FYI.
-Ben
EDIT: I looked up the LQ150X1LH66 and it's definitely outside the max supported size of the PIC's. You could always tack on an external graphics controller IC and then have the PIC control it... but it would probably be in the PIC16 or PIC32 bit land... depending on what you want to do.
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D |
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FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
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| Posted: Sun Dec 12, 2010 3:27 pm |
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| Quote: | | it's definitely outside the max supported size of the PIC's |
Yes, it's restricted to VGA resolution, but thank you for reminding this interesting device. You're completely right that I wasn't aware of it.
Frank |
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