58.6.1.1 QSPI Supported Operation

The following table summarizes the supported operating modes (Single Data Rate, Double Data Rate, or none) of the QSPI peripheral as a function of the ratios between CPU_CLK, MCK, QSPI 2x MCK and QSCK frequencies. Frequencies are expressed in MHz.

Table 58-19. QSPI Operation
CPU_CLK MDIV MCK STH/WCS QSPI

2x MCK

 QSCK Supported Operation
600 3 200 STH 400 50 SDR and DDR
4 150 STH 300 75 SDR and DDR
540 3 180 STH 360 60 SDR and DDR
4 135 STH 270 67.5 SDR and DDR
420 3 140 WCS 280 70 SDR and DDR
4 105 WCS 210 52.5 SDR and DDR
Note: "–" means the operation is not supported.