FT80X: Standard serial interfaces to the host MCU include: SPI up to 30MHz or I²C clocked up to 3.4MHz.
FT81X: Standard serial interfaces to the host MCU include: QSPI up to 30MHz.
FT80X: Standard serial interfaces to the host MCU include: SPI up to 30MHz or I²C clocked up to 3.4MHz.
FT81X: Standard serial interfaces to the host MCU include: QSPI up to 30MHz.