I read somewhere that half of the internal ram may be preserved with a battery during power down.
I have searched through my documentation for this but can't find anything.
Is this true or am I dreaming?
If so, what half is preserved?
"Vstby backs up the first 16K of SRAM and the RTC when the main power is shut down".
See https://community.freescale.com/thread/51895 and also page 5 of the Data Sheet for the M52259.
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