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?
1) you need static memory not DRAM 2) if you need 12Mbyte, I think you are in deep doo-doo Erik
Yeah I know 12M is an odd number but I thought maybe someone is making it. Why do I need SRAM? DRAM is cheaper.........
Yeah I know 12M is an odd number but I thought maybe someone is making it. ONCE MORE if you need 12Mbyte, you have chosen the wrong processor Why do I need SRAM? DRAM is cheaper because this chip does not have a refresh controller. Erik
The 166/XC16x architecture has 16MB address space. So 12MB is just fine. However it should be static SRAM (since the CPU does not offer a DRAM interface). Reinhard
ONCE MORE if you need 12Mbyte, you have chosen the wrong processor Here we go again! The XC167 is a fairly powerful 16-bit processor. It is not inconceivable to imagine this processor working on applications requiring 12Mbyte of RAM. It's unfortunate that you don't even attempt to learn more about an application before dismissing the designers choice of components. -Walt
Thanks guys! We may not need all 12Megs but we want it there during development and as an option during production. As far as DRAM goes, I thought self-refreshing DRAM would work. However, I cant find anything less than 64Meg anyway. I'm assuming there are other people further along in their development that would have researched the memory available and could save me some time in maybe finding the best price etc........Anyone?
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