Switching Between Flash Eproms
Switching Between Flash Eproms
(OP)
I need some help on a hobby project I'm doing. I'm trying to figure out the best way to switch between 2 or 3 flash eproms (AM29F400BB). Each one will hold a different set of data tables. The simplest way I can think of is to tie all the address pins/data pins together, and use the Ouput Enable pin of each device to select which eprom will supply the data to the Micro. When ouput is disable the pins are high impedance, I don't think that this will cause a problem but I'm not 100% sure. Can some one please tell me if I'm going in the right direction, and if not what is the right direction.
Thanks in Advance
Kurt.
Thanks in Advance
Kurt.





RE: Switching Between Flash Eproms
RE: Switching Between Flash Eproms
RE: Switching Between Flash Eproms
I'm going to tie all the CS lines to the original CS line, so things act as they did before. I thought that OE was a better option to switch because the time for OE to Data Ouput is only 30ns, and from CS to Data Ouput is 70ns. I don't know if it would really make a difference, but you never know.