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Altera_Forum
Honored Contributor I
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LCD panel protocol description?

Many of the Altera developer kit contains a small Lumex LCD panel (16x2 line). The Altera kit manual says that one should consult the related documentation on www.lumex.com (http://www.lumex.com). However, on www.lumex.com (http://www.lumex.com) I'll find mechanical and electrical specifications in the datasheet, but no protocol description. Hence, my question is where can I find a protocol description for the LCD panel? 

 

Thanks!
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2 Replies
Altera_Forum
Honored Contributor I
43 Views

Per this thread: 

http://www.alteraforum.com/forum/showthread.php?t=29042 

 

Use the Optrex manual as a reference: 

 

http://www.optrex.com/pdfs/dmcman_full.pdf 

 

Lumex and Crytalfontz are the parts used by Terasic/Altera. These parts are compatible with the timing in the Optrex guide. 

 

warnings: 

 

1) There are several pinouts for LCD modules, with some, the only difference is that the 5V and GND pins are swapped. So make sure you know which pins are which before you power the LCD. Try finding the part number on your module, eg., Lumex LCM-1602DSR/F-Y, and then go find the data sheet. 

 

2) Do not interface to a non-5V compliant FPGA/CPLD directly. The LCD modules can drive the output bus to 5V for read accesses (this depends on the module and its configuration). 

 

Cheers, 

Dave 

http://www.alteraforum.com/proweb/buttons/edit.gif (http://www.alteraforum.com/forum/editpost.php?do=editpost&p=117108)
Altera_Forum
Honored Contributor I
43 Views

 

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These parts are compatible with the timing in the Optrex guide. 

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Thanks. That was the part of information I was missing. Also thank you forthe link to the Optrex manual