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AT89C51CC03U-RDTIM Fiches technique(PDF) 56 Page - ATMEL Corporation

No de pièce AT89C51CC03U-RDTIM
Description  Enhanced 8-bit MCU with CAN Controller and Flash Memory
PDF  183 Pages
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Fabricant  ATMEL [ATMEL Corporation]
Site Internet  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C51CC03U-RDTIM Fiches technique(HTML) 56 Page - ATMEL Corporation

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56
AT89C51CC03
4182B–CAN–09/03
Operation Cross Memory Access
Space addressable in read and write are:
•RAM
•
ERAM (Expanded RAM access by movx)
•
XRAM (eXternal RAM)
•
EEPROM DATA
•
FM0 ( user flash )
•
Hardware byte
•XROW
•Boot Flash
•
Flash Column latch
The table below provide the different kind of memory which can be accessed from differ-
ent code location.
Table 18. Cross Memory Access
Action
RAM
XRAM
ERAM
Boot FLASH
FM0
E² Data
Hardware
Byte
XROW
boot FLASH
Read
OK
OK
OK
OK
-
Write
-
OK (RWW)
OK (RWW)
OK (RWW)
OK (RWW)
FM0
Read
OK
(confidential)
OK
OK
-OK
-
Write
-
OK (idle)
OK(RWW)
-
-OK
External
memory
EA = 0
or Code Roll
Over
Read
-
-
OK
-
-
Write
-
-
OK(RWW)
-
-



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