RabbitCore eDisplay OP7200, User Manual

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User’s Manual 39
3.6 Memory
3.6.1 SRAM
The OP7200’s RabbitCore module is designed to accept 128K to 512K of SRAM pack-
aged in an SOIC case. The standard OP7200’s RabbitCore modules come with 128K of
SRAM.
3.6.2 Flash Memory
The OP7200 is also designed to accept 128K to 512K of flash memory. The standard
OP7200’s RabbitCore modules comes with one 256K flash memory.
NOTE: Rabbit Semiconductor recommends that any customer applications should not be
constrained by the sector size of the flash memory since it may be necessary to change
the sector size in the future.
A Flash Memory Bank Select jumper configuration option based on 0
Ω
surface-mounted
resistors exists at header JP2 on the RabbitCore module. This option, used in conjunction
with some configuration macros, allows Dynamic C to compile two different co-resident
programs for the upper and lower halves of the 256K program flash in such a way that
both programs start at logical address 0000. This is useful for applications that require a
resident download manager and a separate downloaded program. See Technical Note 218,
Implementing a Serial Download Manager for a 256K Flash , for details.