20-101-1105 Rabbit Semiconductor, 20-101-1105 Datasheet - Page 46

• Manufacturer Part Number: 20-101-1105
• Description: MODULE RCM4100 RABBITCORE
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-1105

• Module/board Type: MPU Core Module
• Data Bus Width: 8 bit
• For Use With/related Products: RCM4100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1121

4.6 Memory
4.6.1 SRAM
RCM4100 series modules have 256K–512K of data SRAM installed at U10. In addition,
the RCM4100 and RCM4120 have 512K of fast program-execution SRAM installed at U12.
4.6.2 Flash EPROM
All RCM4100 modules also have 512K of flash EPROM installed at U11.
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
Designer’s Handbook
42
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.
for additional information.
Rabbit 4000 Microprocessor
RabbitCore RCM4100