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Oh thanks, but i'm still i bit confused about it. So i have to use the following pins: VSS, VDD, RW, E, and what else should i use? Am i even correct?
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Yes, for those listed.
VSS would be connected to ground.
VDD would be connected to (probably) +5V (or maybe +3.3V). Depends on your LCD module. You need a datasheet for it.
RS is an input; needs to connect to an FPGA output.
R/W is an input; needs to connect to an FPGA output.
E is an input; needs to connect to an FPGA output.
DB[0:3] are bidirectional; needs to connect to FPGA bidir.
DB[4:7] (optional) are bidirectional; needs to connect to FPGA bidir.
VO is an analog input / LCD contrast. Connect to the wiper pin on a 10K variable resistance. Other two pins to VDD and VSS.
Attached is a PDF datasheet of a pretty standard 8x2 character LCD display from CrystalFontz for reference.
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