i am using p89c51rd2 for my project.i use the feature of in application programming for event logging .each event log takes 9 locations of flash.i store my first event at 0c000h and my 999th event is finished storing at 0e217h .after i finish 999 events i want to overwrite the first event without deleting the other events stored in the 0cxxx location.the datasheet says that we can program bytes only after erazing them.the bytes can not be overwritten or erazedlike i want to erase onlythese 9 bytes and reprogramm them.is there any way of doing these.what is the minimum no of bytes that can be erased.can anything less than a block be erased
please reply
regards
harshada