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?
Yeah I'm starting to get a headache over this much memory.......Apparently the software engineer was told he may need upto 2MB just for fonts for multiple languages (Korean type fonts?). He wants all of it there for development though. RE fonts; I have yet to see an app with fonts in SRAM, I have seen a plethora of apps with fonts in Flash. I have - among several others - done a limited Japanese which took about 400k. Now I have a question based on your experience using this processor. Basically I'm not far enough along to know how fast you can actually access memory, i.e. how many instruction cycles? I'm sorry, but here you will need to refer to the data sheet, so many factors influence this. Is fast sram (10ns) much faster than standard sram with a 70ns response time? Well, I'll take a guess that it is 7 times faster :) I know the memory itself is much faster, but is there really a big difference in this application? I do not recall if the 167 is one of the chips with a software programmable memory timing, if it is this will be a need vs cost decision Get at this "programmer"s butt and get it clear what (s)he need in flash (program, fonts and other permanent storage) and how much in SRAM. I would not be surprised if you end up with just one SRAM chip Erik PS in Flash you can get much more memory per chip than with SRAM (unless someone know about some chips I have not heard about)