AT89C51CC03CA-7CTUM ATMEL [ATMEL Corporation], AT89C51CC03CA-7CTUM Datasheet - Page 23
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AT89C51CC03CA-7CTUM
Manufacturer Part Number
AT89C51CC03CA-7CTUM
Description
Enhanced 8-bit MCU with CAN Controller and Flash Memory
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C51CC03CA-7CTUM.pdf
(197 pages)
- Current page: 23 of 197
- Download datasheet (3Mb)
Data Memory
4182K–CAN–05/06
The AT89C51CC03 provides data memory access in two different spaces:
1. The internal space mapped in three separate segments:
•
•
•
2. The external space.
A fourth internal segment is available but dedicated to Special Function Registers,
SFRs, (addresses 80h to
Figure 8 shows the internal and external data memory spaces organization.
Figure 7. Internal Memory - RAM
Figure 8. Internal and External Data Memory Organization ERAM-XRAM
the lower 128 Bytes RAM segment.
the upper 128 Bytes RAM segment.
the expanded 2048 Bytes RAM segment (ERAM).
00h
256 up to 2048 Bytes
Internal ERAM
Internal
EXTRAM = 0
FFh
FFh
80h
7Fh
00h
) accessible by direct addressing mode.
indirect addressing
direct or indirect
Internal RAM
Internal RAM
addressing
128 Bytes
128 Bytes
Upper
Lower
FFh or 7FFh
FFh
80h
direct addressing
FFFFh
0000h
Registers
Function
Special
AT89C51CC03
External XRAM
External
EXTRAM = 1
64K Bytes
23
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