4.6 Memory
4.6.1 SRAM
All RCM4510W modules have 512K of battery-backed data SRAM installed at U4.
4.6.2 Flash EPROM
All RCM4510W modules also have 512K of flash EPROM installed at U3.
NOTE: Rabbit recommends that any customer applications should not be constrained by
the sector size of the flash EPROM since it may be necessary to change the sector size
in the future.
Writing to arbitrary flash memory addresses at run time is discouraged. Instead, define a
“user block” area to store persistent data. The functions writeUserBlock and
readUserBlock are provided for this. Refer to the Rabbit 4000 Microprocessor
Designer ’s Handbook for additional information.
User ’s Manual
43
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