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BQ40Z50-R2: BQ40Z50R2 about enabling clock stretch function

Part Number: BQ40Z50-R2

Tool/software:

Hi:
In the design and application of BQ40Z50R2, the customer has special requirements for the communication clock and needs to extend the clock response time; Therefore, the FLASH-BUSYWAIT flag in SBS Configuration was enabled to extend the clock's response time. However, after adjusting the flag, the test results showed that the delay of the communication clock did not increase, and it is unclear where else it was not set properly. The experts helped to answer this question;

1. When the clock stretch function is turned on and the FLASH-BUSYWAIT flag is set to 1, how long is the delay for the clock?