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configuring SCI pin in the RA8M1

mukesh

Hello everyone, I am trying to configure the pin P113 and P112 in the SPI mode but i can't find the this pin in the SPI section to select it as MISO and MOSI .But I can able to configure then as MISO and MOSI in the simple SPI ,May I know what is the difference between Simple SPI and Normal SPI


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    Hi Mukesh,

    Thank you for reaching out to Renesas! The difference you're noticing is due to the way Simple SPI Mode and Standard SPI Mode handle pin configurations in the SCI module.

    • Simple SPI Mode allows more flexible pin selection because it operates similarly to clock synchronous mode, where the SSn pin is optional in single-master systems.
    • Standard SPI Mode follows the conventional SPI protocol, which requires specific dedicated pins for MISO, MOSI, SCK, and SS. Not all pins may be assignable in this mode, depending on the hardware restrictions.

    Since you can configure P113 and P112 in Simple SPI Mode but not in Standard SPI Mode, it likely means these pins are not mapped as SPI-functional pins in the standard mode for RA8M1. Let us know if you need further assistance!

    Kind regards,

    Payodhi