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Altera_Forum
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15 years ago

LCD interfacing with the de1 board

Is any one having the datasheet of 16x2 lcd shipped from terasic. I bought the lcd with de1 but I did not get any manuals or datasheet. Can any one tell me how to interface or is there a datasheet av...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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