58.6.6.2 On-Demand Refresh

A refresh sequence can be launched any time by writing QSPI_CR.STPCAL to ‘1’. This minimizes the latency of the first access as the first calibration is always longer than the one generated by a refresh. To avoid conflicts with an automatic refresh, automatic refresh must be disabled, or the on-demand refresh process should be started only when the QSPI is disabled. The QSPI_ISR.RFRSHD flag indicates the end of the refresh process.

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