Cypress S29JL032J allows 100K P/E(Program/Erae) cycles.
So, it is defined as a typical specification with chip erase time of 39 seconds.
Therefore, for several erases, chip erase time doesn't require 39 seconds.
Thanks and regards,
39 seconds is the typical chip erase time of the device S29JL032J. We recommend you to implement the data polling algorithm mentioned in the datasheet to know the completion status of program and erase operations.
Thanks and Regards,