4 ms·
I wonder if read and write times on-par, or better than, DRAM's are achievable with such modern core memory. Cool project, btw :-)
by dexen 15y ago
I wonder if read and write times on-par, or better than, DRAM's are achievable with such modern core memory.
Cool project, btw :-)
- pixelbeat 15y agoI think it was tested at 200Kb/s throughput, but with tweaks that could be doubled
- dorianj 15y agoMost on-die embedded DRAM is one cycle away for a whole word (I'm not sure about arduino but I'll bet it's in the same ballpark). This uses a 500 ns pulse for each bit, so reading a 8-bit word would take 40 clock cycles (at 10 mHz)
- ChuckMcM 15y agoNo, you can't get anywhere close to modern DRAM with this type of core memory. FRAM chips [1] which use the principle of Ferrormagnetism to retain data while power is off are fairly quick however. They can replace the typical serial flash or EEPROMs you might use to save settings, and they have the benefit of unlimited write cycles and faster (than flash) write times. [1] http://www.ramtron.com/about-us/what-is-f-ram.aspx http://www.ramtron.com/about-us/what-is-f-ram.aspx
- westbywest 15y agoThe sheer size of the core memory, e.g. measured in millimeters, will prevent it from having access times in comparable orders of magnitude as silicon-based DRAMs, whose dimensions are measured in micrometers.