ADUC7019/20 Rev. C Page 69 datasheet points out that spi speed limit is 3.48 Mb in master mode with CD =0 and SPIDIV = 5.
What is this limit?
What will happen if I set SPIDIV = 4?
I need higher speed.
If you don't need to receive back data from a slave connected, than it may work down to SPIDIV = 3 properly, I just tested on the bench, but this is only typical and you must test worst case on your own.
MISO has shown with higher speeds errors receiving data.
With the ADuC702x we have seen problems on the MISO with higher speeds. The newer parts in the family, like ADuC7023, ADuC7121, ADuC7122, ADuC7124 and ADuC7126 have been improved and can run up to half the core clock, which means approximate 20MHz @ CD = 0.
Please, clarify. Problems on MISO? I m only using MOSI pin for data output in ,master mode. Is the behavior of this pin correct with SPIDIV = 4?
Thank you for reply.
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