7
www.st.com/m icropsd
•8051 Architecture uses a separate address space for code and for data
•Allocate dual banks of Flash to meet Application Demands
– The Decode PLD controls where Flash memory resides
•You decide how to split the Flash memory
Flexible Memory Allocation
Flexible Memory Allocation
MAIN FLASH
MAIN FLASH
MAIN FLASH
2nd FLASH
2
2nd
nd FLASH
FLASH
DATA
DATA
DATA
CODE
CODE
CODE
Big Code
(complex
algorithms)
Big Data
(printers, big
GUI, tables)
MAIN FLASH
MAIN FLASH
MAIN FLASH
2nd FLASH
2
2nd
nd FLASH
FLASH
CODE
CODE
CODE
DATA
DATA
DATA
MAIN FLASH
MAIN FLASH
MAIN FLASH
2nd FLASH
2
2nd
nd FLASH
FLASH
CODE
CODE
CODE
CODE
CODE
CODE
All Code
(like typical
flash 8051s)
Can use
EEPROM
Emulation
-OR - -OR -