Posted by GA on February 2, 2006, 15:36:47, in reply to "flash on 2329" GA --Previous Message--
62.73.170.19
It sounds like your code did not program the flash correctly. Did you remember to use the program-verify feature of the programming algorithm and the erase-verify feature of the erase algorithm. If the contents were not versified correctly as given in the algorithm the data retension cannot be assumed to be that specified in the hardware manual. Also check that the re-program and additional re-program data is being correctly calculated. Apps note 125 from the link below should help.
: I made a program on 2329 boards, to
: manage a message display leds, this
: program has a feature that allows to
: change firmware at run time, erasing
: and writing 2329 flash memory, the
: program runs perfectly. these
: hardware had been stored during 6
: mounths, (there are 400 hardware
: cpus), and now, 6 mounths later 50
: cpus seem to be lost their flash
: program, seems as flash memory was
: erased.
:
: do you know why flash lost its data?
:
: thank you, very much in advance.
: JoanCarles
:
Message Thread:
« Back to thread