Configuring and Using QUADSPI on STM32H7 for External Serial NOR Flash
QSPI essentials Quad-SPI (QSPI) is an SPI extension that boosts throughput by transferring data over up to four data pins in parallel. STM32 MCUs expose this as the QUADSPI peripheral. Copmared to classic SPI: Pins: CS/NSS, SCK, IO0, IO1, IO2, IO3 (six lines total). Command/address phases are typica...