Lpc2000

Hi Gennady,

> 2. Update data only in RAM. On power-down create sufficient VDD delay
> and store the whole RAM user data array to the on-chip flash. Not
> sure how long storing of 2K of data will take. And I believe that
> according to one of the previous discussions I can write data to the
> on-chip flash providing interrupts are disabled (?)

There are some notes when using IAP on page 294 of the LPC214x user manual.
 
> 3. Update data in RAM and in on-chip flash on a fly. As far as I
> understand, there is no byte-write provision for flash in lpc, so I
> will need to save a page - 256 bytes. The question here is, of
> coarse, time to store a page, and, second - flash endurance. How many
> times can I write to the flash (I couldn't find information on that)?

Page 6 of the LPC214x user manual:
" The LPC2141/2/4/6/8 Flash memory provides minimum of 100,000 erase/write
cycles and 20 years of data-retention."

This is a demo posted by Phillips apps that you might be interested in:
http://groups.yahoo.com/group/lpc2000/files/EE_demo.zip 


Joel