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Can we configure SPIM3 (Instance 3) at SCK more than 8MHz?

jayaram

In datasheet it had been mentioned that in SPIM0,SPIM1,SPIM2 the SPI clock frequency should not exceed more that 8 Mhz. And SPIM3 nothing is mentioned. Can we understand that SPIM3 allows sck more that 8MHz. ?

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    Hi,

    SPIM3 is unfortunately not functional on the Engineering A revision of nRF52840 (The chip that is on the nRF52840 Preview DK). This will be added to the errata list as soon a possible. When the production ready chip is released later this year, the SPIM3 will be a high speed SPIM (supporting up to 32 MHz).

  • 0 in reply to Sigurd

    You can unfortunately not use the QSPI as a regular SPI master, it’s very targeted to be used for external flash devices. So an option is to develop your application for now using e.g. SPIM2, and then switch to SPIM3 when you have the production variant of the chip, and use 16/32 MHz. Switching from SPIM2 to SPIM3 should only be a matter for changing 2-3 lines of code when the production variant is ready.

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  • 0 in reply to Sigurd

    You can unfortunately not use the QSPI as a regular SPI master, it’s very targeted to be used for external flash devices. So an option is to develop your application for now using e.g. SPIM2, and then switch to SPIM3 when you have the production variant of the chip, and use 16/32 MHz. Switching from SPIM2 to SPIM3 should only be a matter for changing 2-3 lines of code when the production variant is ready.

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