First, I'm mostly an analog engineer just now getting into microcontroller design. I'll be using the XC167 and am have trouble finding external memory. I have 12MB of external memory area and am therefore looking for 12MB of memory. Ive been looking for synchronous DRAM but can only find 64MB and greater. Does anybody have recommendations for external memory?
Is there anyway to still use 3.3V mem on a 5v uP? The data bus should be fine, I just have to worry about the other inputs........Is there anything wrong with using a resister array to lower the voltage? Would it be better to use a 3V3 buffer with 5v Input? There's not much of a selection of memory at 5v.
3V3 and 5V mixing is an issue with many answers. I would be very hesitant to use anything but something like 74LVC4245 for a memory bus. Erik
Yeah, thats exactly what I was thinking of..........