I am now developing a firmware in Cypress AN2131QC which just allow 8Kbyte code size. But my application is quite complicated for which code size may need to use up to 15Kbyte. I found that external FLASH can help to solve this problem. But i am new in programming external FLASH. Does anyone have any idea to expand code size limitation other than FLASH? or does anybody knows how to use external FLASH to store program code for AN2131QC and the memory management? If you know how to do that and you have sample code for it, you can email the code or reference to me directly, eg_cwm@stu.ust.hk. Thanks very much.