Regarding the WSON package, other than the different package dimensions (PCB change to accommodate the FL-L), would I need to change firmware, software or power supply to migrate to the FL-L? Are the FL-S and FL-L electrically and functionally equivalent? Besides package, they seem electrically and functionally the same.
Thank you for contacting Cypress Semiconductor.
Please go through this guide for migration from S25FL-S to S25FL-L family of devices - https://www.cypress.com/file/334026/download . It describes the similarities and differences in specifications to facilitate this conversion.