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graphic display with PIC16F877A or others PIC?

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patrick772

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ks0108 192x64

a 192x64 graphic lcd is used. how is the interface and the schematic for the connection to a PIC16F877A. any sample u guys can have? please help me. thanks for ur help...:D
 

pic16f877 graphic display

Hi,

I'm afriad without much more information, I can be of little help here. Most (but not all) graphic LCD's have an in-built controller, with display RAM and sometimes a font generator. Could you please specify the LCD part number. Also, search google for the datasheet, that'll have the pinout. The pinout really depends on the actual LCD, there is no real 'standard' apart from the fact they usually have D7-D0, for parallel interfaces, plus R/W, C/D, and a strobe line, usually 'E'.

For a 192x64 I'm only aware of two possible contorller chips: SED1330, and the T6369C. Both have a very similar interface. It is also possible for a 192x64 to use the KS0108, but I doubt it, that contorller has no font ram, and although simple, can be troublesome. All the above can be controlled with a PIC, no problem. The only real limitation is memory, as larger displays require you to store bitmaps, 192x64 = 12kbytes.

Find the part number (on the LCD), oogle it, and try and find the datasheet, that has all the info you need. Most even give you initialization sequence, and the appropriate commands.

Regards,

BuriedCode.
 

pic16f877 - graphic display

patrick772 said:
a 192x64 graphic lcd is used. how is the interface and the schematic for the connection to a PIC16F877A. any sample u guys can have? please help me. thanks for ur help...:D
The solution to this depends entirely on the lcd interface. Is it a parallel interface or does it use some kind of asynchronous serial interface such as RS-232? Can you please give us some details about this?
 
t6369c

thank for the info. i dunno what kind of the lcd model is. cox i plan to buy one. any suggestion? i attach the doc below. the one i wan to buy is the lcd 192x64. izzit possible to know the part number from the spec below? thanks lot
 

graphics display for pic16f877a

Would you please provide a link to the document?
 

read data from t6369c

hi again,

izzit possible to know the part number from the spec below?

Not really. Most manufacturers give a link to the datasheet, or at least tell you what controller they use. That table appears to give neither. The only time I've never seen additional information is when companies sell large quantaties..ie: to distributors, not end users. Basically, it might be that you can't simply buy one, they might have a minimum of 500 or so. I've emailed several companies in the pas...and very few sell 'just one'. Most likely you would have to go to a distributor, there are plenty on the web.

If 192x64 is what you want, search google. And even ebay (I have got many displays from there, very cheap). 240x64 is more common, the extra width doesn't increase the complexity at all, only physical size (and number of dots).

At a guess....assuming that all those LCD's in the table are from the same company, they use the T6369C..as I said, its purely a guess. Its just that controller is used in all of the sizes you provided.

A word of warning...although they are rare, some LCD's do not have an in built controller....which makes using them a whole lot harder. I've had one 320x240 LCD, that didn't have a master controller, I spent over 5 months looking for a chip to use, I ended up building a board the same size as the LCD just so I could use my microcontroller. As I said, controllerless displays are very rare, especially at the size you want.

What country are you in? I may know some cheap distributors..

BuriedCode.
 

rs232 graphic lcd 192x64

Looking at that link you provided...it looks like, you might have to buy 'blind'.

That is, buy it, then look at the part no. on the LCD, search google and try and get a data sheet. I would say that you should have no trouble interfacing a PIC to a graphic LCD, especially one with so many pins (the 877A has lots and lots :D ) but without a part number..or more information, I cannot really say anything.

Good luck,

BuriedCode.
 

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