You can read status register and check WIP continuously to know the completion status of internal erase cycles. When, WIP bit 0, it indicate the internal erase operation is finished. Then the device will be ready to accept next command.
Please refer "9.10Embedded Algorithm Performance Tables" for the maximum time for internal algorithms to finish. Datasheet: http://www.cypress.com/file/445866/download
Thanks and Regards,
Thank you so much!
That really helps a lot!