I would like to know what is the minimum value of the parameter shown in figure.
I suppose it is zero, but why is it not written in the datasheet?
I checked several AD5235 trimmers. Someone has150uS other instead 0uS.
Its a interesting question. Let me explain why.
In your case you want to know why the minimum time of CS raise time to RDY fall time is not specified. After CS go high, the SPI transaction is completed. The instruction passed in the SPI transaction is decoded and RDY pin goes low during the execution of the instruction. There can be be several combinational circuits that could result in RDY pin going low based on the instruction sent. So giving a minimum time specification will not make any sense. That is why we give typical and maximum time specification.
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