Content originally posted in LPCWare by xianghuiwang on Tue Dec 02 12:41:26 MST 2014
Hi, Chengyi,
The min erase size and write size with flash IAP operation is 256 bytes. See UM10732 section 27.6.2 (IAP copy ram to flash) and 27.6.10 (IAP Erase page) for details.
You might consider using the on chip EEPROM should you application require smaller size data storage and manipulation. EEPROM access allows byte level operation.
regards,