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. ?

[Turbo J]

Nope, more than 8 MHz is not possible.

[Wojtek]

@Turbo J Are You sure? I was sceptical about this question too, but specification says: "The actual maximum data rate depends on the slave's CLK to MISO and MOSI setup and hold timings."

Also, FREQUENCY register allows up to 32M. Also, for modules SPIM0-2, it is stated that: "Not supported: > 8 Mbps data rate", but for SPIM3 it is not stated. So, I would wait for some confirmation from Nordic guys. Ofc we are talking about nRF52840.

[Sigurd]

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).

[jayaram]

ok. Thank you very much for the info. May I know what would be the approximate release date of the latest chip.?

[Sigurd]

The production variant is expected in Q4 2017.