Translation - Japanese: STM Accordo5でFL-S SPIフラッシュ メモリをクアッド モードで使用する– KBA220177- Community Translated (JA)
How can I use FL-S SPI Flash Memory with STM Accordo5 in Quad mode?
The SQIO controller supports Fast read in SPI mode and Fast read in QPI mode. The following are the supported quad lines protocols (the blue text indicates compatible modes):
Command sent on a single line, but address and data sent on quad lines (1-4-4, SQI Type1) – Use Quad I/O Read command (QIOR EBhor 4QIOR ECh)
Command, address sent on a single line but data sent and received on quad lines (1-1-4, SQI Type 2) – Use Quad Output Read Command (QOR 6Bh or 4QOR 6Ch)
The following are the SQI settings to be used when attaching the Flash to CS0# (the recommended settings are in blue):
Configuration registers base address:
SQI registers address offset and recommended settings: