I need some tips about external memory which is conected on ATmega 128.
I was use IS63LV1024-12JL (3V) on STK501 board and everthing was fine..
Now I use IDT71024S12YG (5V)with 74HCT573 (Ti)latch on my board with same connections (only pinout is diferent)like on STK501, and I can write and read anything from it.
I was change CPU and memory, only latch was not changed (becouse I do not have it another).
Wait states and port pull-up's changed to but with no effects...
Any help is welcome.. :cry:
Thanks in advance.