I hate to beat a dead horse, but compact flash is... flash! flash eeprom,
its major difference from regular eeprom is that flash eeprom are
programmed a page at a time, whereas eeprom usually are byte programmable
and erasable. NV-SRAM still needs a power source to make a NV....
I write embedded compilers, and most of our targets are FLASH microcontrollers.
....
Compact Flash and SmartMedia use NV-SRAM which is Non-Volatile meaning once
written it remains in a readable state without needing electrical
refreshment like regular DRAM and therefore no power needed. NVSRAM can be
'erased' by being overwritten, I think the erasure of CF and SM cards is
done similarly to erasing files from a hard drive; the file directory is
changed to show 'space available' then the data in the cells is overwritten.
...
// richard http://www.imagecraft.com
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