T89C51CC01 Atmel, T89C51CC01 Datasheet - Page 48

• Manufacturer Part Number: T89C51CC01
• Description: Enhanced 8-Bit Microcontroller
• Manufacturer: Atmel

Operation Cross
Memory Access
Table 28. Cross Memory Access
Note:
48
boot FLASH
or Code Roll
External
memory
EA = 0
Over
FM0
1. RWW: Read While Write
T89C51CC01
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.
XRAM
ERAM
RAM
ERAM (Expanded RAM access by movx)
XRAM (eXternal RAM)
EEPROM DATA
FM0 (user flash)
Hardware byte
XROW
Boot Flash
Flash Column latch
Boot FLASH
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)
4129K–CAN–01/05
XROW
OK
OK
-
-
-
-
(1)