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STM32F40x @ 168MHz wait states and execution from RAM

Question asked by krueger.arne on Jan 16, 2013
Latest reply on Jan 21, 2013 by fm

our institute is currently using STM32F103 devices in a distributed control system. However we are evaluating a switch-over to STM32F40x devices for the sake of its FPU and higher clock speed at comparable current consumption (according to datasheet).

Toying with the Clock Configuration Tool (AN3988) I stumbled across the Wait States mentioned at full 168MHz clock speed. Can someone point me at relevant documentation to understand how these affect performance (who is waiting for whom and what to do about it)?

Also, suspecting the Flash may be the bottleneck (wild guess here), would running the program from RAM improve performance in general purpose applications?

Thanks in advance.