I've recently bought HD44780 compatible LCD screen (16x2) from eBay. I want to use it with my Spartan 3 FPGA development board, but after I've thought a little about it, I'm not sure that I can use it.
The main thing that's bugging me is that the display that I've bought works on 5V, and all Spartan 3 I/Os can work at max. 3.3 V. So is there any way to use Spartan 3 and this display ? Is it possible that it will work with 0V and 3.3V as logical levels (or does it require TTL levels) ?
I don't have datasheet for it, so I'm not sure. I've searched it physically for some marks, and I've only found this: "1602ZFA", but when I google it, I don't get anything good.
I've also asked the seller to send me datasheets, but I think he sent me wrong ones ... Here's what he sent me:
I have only 16 pins on my display.
So, is there any chance that I can use this display with Spartan 3 FPGA ?