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The Atmel® | SMART SAMA5D2 Series is a high-performance, powerefficient
embedded MPU based on the ARM® Cortex®-A5 processor. It
features 2 Quad SPI (QSPI) interfaces which enable booting from QSPI and
eXecuting In Place (XIP) with QSPI.
This Application Note describes how to run an RTOS from QSPI, measures
the real-time performance of the RTOS, and shows the factors which affect
performance. The purpose is to show the performance of QSPI and to
provide an option to run a DDR-less system on SAMA5D2.