AT89C51CC03U-S3SIM ATMEL [ATMEL Corporation], AT89C51CC03U-S3SIM Datasheet - Page 56

• Manufacturer Part Number: AT89C51CC03U-S3SIM
• Description: Enhanced 8-bit MCU with CAN Controller and Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

Operation Cross Memory Access
Table 18. Cross Memory Access
Note:
56
or Code Roll Over
External memory
boot FLASH
EA = 0
FM0
1. RWW: Read While Write
AT89C51CC03
Action
Read
Read
Read
Write
Write
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)
4182I–CAN–06/05
XROW
OK
OK
-
-
-
-
(1)