I am using 3.2' TFT LCD with touch pad. LCD has pins RD and WR. What is RD and WR pin?
Is WR for RD also ( for both write as well as read )?
Where to connect RD pin of LCD?
Please see attached pinout of LCD.
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The datasheet is the only real answer.
It looks like this LCD has a combination of interfaces:
A parallel interface with separate RW en WR pins (8080 style) requires that one of those pins is made active to do a read or write cycle. Often an alternative 'format' is provided where one pin selects between read and write, and another pin is activated to do a cycle (6800 style).