Hi Alberto, With regards to your question about single-chip QSPI, there's no problem with that (provided that you correctly configure the RZ's QSPI peripheral when you boot.) There are many compatible QSPI Flash IC's with large capacities, so memory size in of itself shouldn't be an issue. However, there is the issue of bandwidth. 2 chips is 2x the bandwidth (i.e. the RZ can cache 2x the code/data it needs per QSPI clock.) This decision is application dependent. I suggest you test using a demo/development board that has 2 chips. It's then easy to disable one, and just use the other to see if you're OK. Just for your info: we use a single QSPI 16Mb in 1 application, and it works very well. However, there's no audio/video in this application, so the QSPI bandwidth was not critical in this case. Jean-Luc
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