CHAPTER 3 CPU FUNCTION
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User’s Manual U14359EJ4V0UM
(2) Internal RAM area
The 12 KB area of addresses FFFC000H to FFFEFFFH are reserved for the internal RAM area. The 12 KB
area of 3FFC000H to 3FFEFFFH can be seen as an image of FFFC000H to FFFEFFFH.
In the
µ
PD703103A and 703105A, the 4 KB area of addresses FFFC000H to FFFCFFFH are provided as
physical internal RAM.
In the
µ
PD703106A, 703107A, and 70F3107A, the 10 KB area of addresses FFFC000H to FFFE7FFH are
provided as physical internal RAM.
Caution
The following areas are access-prohibited.
µµµµ
PD703103A, 703105A:
Addresses FFFD000H to FFFEFFFH
µµµµ
PD703106A, 703107A, 70F3107A: Addresses FFFE800H to FFFEFFFH
PD703103A, 703105A
Internal RAM area (4 KB)
FFFEFFFH
FFFD000H
FFFCFFFH
FFFC000H
µ
PD703106A, 703107A, 70F3107A
Internal RAM area (10 KB)
FFFEFFFH
FFFE800H
FFFE7FFH
FFFC000H
µ
Access prohibited
Access prohibited