at89c51cc03c-slsim ATMEL Corporation, at89c51cc03c-slsim Datasheet - Page 55

• Manufacturer Part Number: at89c51cc03c-slsim
• Description: At89c51cc03 Enhanced 8-bit Mcu With Can Controller And Flash Memory
• Manufacturer: ATMEL Corporation

Operation Cross Memory Access
Table 18. Cross Memory Access
Note:
4182N–CAN–03/08
or Code Roll Over
External memory
boot FLASH
EA = 0
FM0
1. RWW: Read While Write
Action
Read
Write
Read
Write
Read
Write
RAM
Space addressable in read and write are:
•
•
•
•
•
•
•
•
•
The table below provide the different kind of memory which can be accessed from differ-
ent code location.
RAM
ERAM (Expanded RAM access by movx)
XRAM (eXternal RAM)
EEPROM DATA
FM0 ( user flash )
Hardware byte
XROW
Boot Flash
Flash Column latch
XRAM
ERAM
Boot FLASH
OK
OK
-
-
-
-
OK (idle)
FM0
OK
OK
OK
-
-
(1)
E² Data
OK
OK
OK
OK
OK
OK
(1)
(1)
(1)
Hardware
Byte
OK
OK
OK
-
-
-
(1)
XROW
OK
OK
-
-
-
-
(1)
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