Figure 460. Mode2 And Mode B Read Access Waveforms; Figure 461. Mode2 Write Access Waveforms - STMicroelectronics STM32F405 Reference Manual

Flexible memory controller (FMC)
Mode 2/B - NOR Flash
1. NBL[3:0] are driven low during the read access
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Figure 460. Mode2 and mode B read access waveforms

Figure 461. Mode2 write access waveforms

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