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Forum Index : Microcontroller and PC projects : SSD1963 Compatability

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Phil23
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Joined: 27/03/2016
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Posted: 12:06pm 10 Apr 2016
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Hi all,

Ordered this screen a week or so back.

Planning to playing with it on a MM+ with this

Neither have arrived yet, but wondering if they are compatible?

Resistive or Capacitive touch?

Links the seller provided for specs don't seem to work.

Cheers
 
disco4now

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Joined: 18/12/2014
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Posted: 01:46pm 10 Apr 2016
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The LCD is similiar to one I have,resistive touch with the correct decoder chip installed. Should be OK.

The SnadPIC is used by many on here as an MM2+ but you need to order with a 20 MHz crystal in lieu of 8MHz and with the MX470 chip. Just mention Micromite when ordering.

If you did not ask for 20MHz you can probably change the crystal over.

Regards
Gerry

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Phil23
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Posts: 1664
Posted: 02:15pm 10 Apr 2016
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  disco4now said   The SnadPIC is used by many on here as an MM2+ but you need to order with a 20 MHz crystal in lieu of 8MHz and with the MX470 chip. Just mention Micromite when ordering.

If you did not ask for 20MHz you can probably change the crystal over.

Regards
Gerry



From their drop down option I chose "PIC32MX470F512L", which currently shows as out of stock.

Is that the correct option? Or do I still need a different crystal?
If so, where's a good place to grab one quickly here in Aus?

Thanks

PhilEdited by Phil23 2016-04-12
 
disco4now

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Posted: 05:26pm 10 Apr 2016
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Pretty sure you will need to 20MHZ crystal

RS components online have some 20Mhz SMD crystals.e.g

RS Components 20MHz

I measured the size on my board, its about 3.0mm x 2.5mm and surface mount.
The load resistors required for this one seems to be 15pF, the circuit diagram indicates 22pF are currently in place so not sure if you need to change them.

RS Components deliver online orders free.

Picture of back of board.


Someone that's done the change themselves might chime in with more info.

Regards
Gerry.
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Phil23
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Posted: 05:35pm 10 Apr 2016
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LCD Panel arrived 1/2 an hour after my last post.

Haven't tried to lookup any data for it just yet, but here's a couple of pics.







Someone might instantly recognise it.

Cheers

Phil



 
paceman
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Joined: 07/10/2011
Location: Australia
Posts: 1329
Posted: 07:34pm 10 Apr 2016
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I have one of those Phil, it should be fine with the SnadPic board (with the correct Xtal). You'll have a lot of pins to connect up, I use mine on one of Matherp's 64 pin 'Ultimate Backpack" boards which has a header already wired for it. There are a few points you should check especially re the backlight control - see the last few posts on this thread which is about the 4.3" 480x240 board but it's applicable to your 5" 800x480 which uses the same ILI1963 controller. In case you don't already have it, here's the schematic for your display. 2016-04-11_053209_Schematic.pdf

Greg
 
Bill7300
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Joined: 05/08/2014
Location: Australia
Posts: 158
Posted: 09:22pm 10 Apr 2016
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  disco4now said   Pretty sure you will need to 20MHZ crystal

RS components online have some 20Mhz SMD crystals.e.g

RS Components 20MHz

I measured the size on my board, its about 3.0mm x 2.5mm and surface mount.
The load resistors required for this one seems to be 15pF, the circuit diagram indicates 22pF are currently in place so not sure if you need to change them.

RS Components deliver online orders free.

Picture of back of board.


Someone that's done the change themselves might chime in with more info.

Regards
Gerry.
Bill
 
Bill7300
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Joined: 05/08/2014
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Posted: 09:24pm 10 Apr 2016
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Those load "resistors" are actually capacitors, Gerry, hence the 15pF or 22pF - but I suspect you already know that?

Cheers
Bill
Bill
 
Phil23
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Posts: 1664
Posted: 09:38pm 10 Apr 2016
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  disco4now said   Pretty sure you will need to 20MHZ crystal

RS components online have some 20Mhz SMD crystals.e.g

RS Components 20MHz

I measured the size on my board, its about 3.0mm x 2.5mm and surface mount.
The load resistors required for this one seems to be 15pF, the circuit diagram indicates 22pF are currently in place so not sure if you need to change them.


The original listing does state an 8MHz Crystal.

Ordered a couple from RS earlier.

Hope I'm not biting off more than I can chew with this.

Crystal sounds small for someone with only an old TC201 iron.

Sound like it's way more complex to interface that the MM LCD Backpack.

 
Phil23
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Posted: 09:46pm 10 Apr 2016
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  paceman said   I have one of those Phil, it should be fine with the SnadPic board (with the correct Xtal). You'll have a lot of pins to connect up, I use mine on one of Matherp's 64 pin 'Ultimate Backpack" boards which has a header already wired for it.

Greg


Is that something I'm able to source somewhere?

Did a quick search but no hit.

Thanks.

Phil.


 
paceman
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Posted: 02:19am 11 Apr 2016
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  Phil23 said   Is that something I'm able to source somewhere?

You'll need to PM MatherP to see if he has one available, I think there were only 10 or so made. Peter built two versions for the Micromite Plus i.e. running on MX470 chips. One for the 44 pin chip and one for the 64 pinner, I have the latter. As far as I know there isn't one (at this stage) set up for the 100 pinner you're looking to use except the SnadPic board (or just a standard 100 pin breakout). Neither of these has a header set up for the parallel 40 pin ILI1963 panel.

Greg

 
paceman
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Posted: 02:47am 11 Apr 2016
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Phil,
You probably already know this but just correcting my earlier post. At 3:34pm I said "(with the 20 MHz xtal)". That's true but as 'disco4now' noted earlier you of course also have to have the MX470 processor (PIC32MX470F512L-120/PF or PIC32MX470F512L-I/PF), not the MX795 that is standard on the SnadPIC board if you intend to use that board.

Greg
 
Phil23
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Posts: 1664
Posted: 06:00pm 18 Apr 2016
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Received the board today,

It has an 8.0MHz Oscillator on it.

Ordered the 20Mhz ones mentioned above, but they are much smaller.

This one is 5 x 3mm roughly.

Does this one look like the correct replacement?





Thanks.

Phil
 
disco4now

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Joined: 18/12/2014
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Posted: 07:23pm 18 Apr 2016
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Hi Phil,
I think I may have given you some misinformation on my first posting of a link to a suitable crystal.It seems I pointed out a crystal oscillator unit where as you need just a crystal.

The 4 pin SMD crystals seem to all have the crystal between 1 and 3, the other pins for shielding I guess. The board seems to have 4 pins, so I guess you need a 4 pin one.

The one I originally linked to and the one you link to are crystal oscillator units, these take VCC + GRN and output the 20Mhz. This is not what is required here.

The link below is for a 4 pin crystal. I am guessing this would do the job and that the pin layout on the SMD crystals are a standard.

20MHz SMD Crystal

Someone who really knows may confirm?


Regards
Gerry
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palcal

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Joined: 12/10/2011
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Posted: 08:58pm 18 Apr 2016
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The crystal on the board is similar to the 8MHz on on your board, it has the marking
FXC 20.0 and XU06. The best bet would be to email the guy at SnadPic and I am sure he will be happy to set you right.
Paul
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
Phil23
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Posted: 12:53am 19 Apr 2016
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So the one I mentioned above, from RS components may not be correct?
Ordered one today on the off chance....

Thanks
 
Phil23
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Posts: 1664
Posted: 04:32pm 21 Apr 2016
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  Phil23 said   Received the board today,

It has an 8.0MHz Oscillator on it.

Ordered the 20Mhz ones mentioned above, but they are much smaller.

This one is 5 x 3mm roughly.

Does this one look like the correct replacement?





Thanks.

Phil


Hi All,

Received the crystal I ordered today.

Is someone able to confirm it is correct? Wasn't 100% sure.

Also any advice on replacement would be appreciated.
Only have a TC201 Weller, 0.8mm my smallest tip.



Anything else? Someone mentioned the value of the caps may differ.


Thanks

Phil
 
disco4now

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Posted: 05:46pm 21 Apr 2016
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Hi Phil

The datasheet for what you have is here. See it has VCC ,GRN ,control and Output
for the 4 pins.

datasheet

As I posted above I think this is not what you want. You just need the crystal.i.e.

Crystal

If you scroll down on the above link you see that even though it has 4 tabs ,it just has the crystal between tabs 1 and 3.

For removal, I would used a bit of solder on the tip of the iron, and place against each pad in turn while slightly levering up. Repeat for otherpads. Once off, clean up the pads.
When replacing, use plenty of flux and solder will wick underneath the pad ok.

You could take it off and poke around with a meter between the pads to verify what you have looks like what is taken off. Pretty sure you need to get just the crystal.

Regards
Gerry




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Phil23
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Posted: 09:03pm 28 Apr 2016
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So I finally got the correct Crystal (I hope) and replaced the 8MHz one with a 20MHz.

Presume I also have to remove the 32.768k one as well?





Is that all then good to go?

Someone mentions capacitors....


Thanks

Phil
 
Bill7300
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Posted: 09:26pm 28 Apr 2016
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Coming into the discussion totally cold but I would imagine the 32.768MHz crystal is for a Real Time Clock and therefore needn't be removed?

There will be two padding capacitors with the crystal but these would only require changing if the 20 MHz rock's requirements differ from the 8 MHz rock's. Do you have specs on the 20 MHz's requirements?
Bill
 
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