Rabbit Semiconductor 101-0505 Datasheet

3.4 Memory

3.4.1 SRAM

The OP6800 module is designed to accept 128K to 512K of SRAM packaged in an SOIC case. The standard OP6800 modules come with 128K of SRAM.

3.4.2 Flash Memory

The OP6800 is also designed to accept 128K to 512K of flash memory. The standard

OP6800 modules comes with one 256K flash memory.

NOTE: Z-World 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 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 TN218,

Implementing a Serial Download Manager for a 256K Flash, for details.

User’s Manual 23