Lpc2000

Peter,

The following post contains answers to your questions

http://groups.yahoo.com/group/lpc2000/message/2681

Philips Apps

--- In lpc2000@yahoogroups.com, "embeddednut" <embeddednut@y...> 
wrote:
> 
> Does anyone know if it is allowed to program the same 512 byte 
sector 
> multiple times (assuming that with each call bits only get cleared 
> not set)?
> 
> I currently have my RAM 512 byte buffer filled with 0xFF and write 
a 
> string to the first 16 bytes, and program that into Flash (writing 
> all 512 bytes).
> 
> Works fine.
> 
> Next step I am only modifying bytes 16 to 31 (which were 0xFF 
before) 
> and try to write again to the same destination address. The call to 
> write flash produces no error, however, if I read back from Flash I 
> see that one of my just added bytes does not have the right value, 
> one bit too many got changed from one to zero. I see a 't' (in 
flash) 
> instead of a 'u' (which is in RAM).
> 
> I tried different addresses to verify that it is really not the 
Flash 
> memory, and yes, it happens also if I use a different address - 
same 
> bit.
> 
> Thanks,
> 
> Peter