External Memory Area (When Expanded To 64 K, 256 K, Or 1 Mbytes) - NEC V850/SA1 mPD703015 Preliminary User's Manual

(4) External memory area
The V850/SA1 can use an area of up to 100000H to FFBFFFH (16 Mbytes) for external memory accesses.
64 K, 256 K, 1 M, or 4 Mbytes of physical external memory can be allocated when the external expansion mode is
specified. In the area of other than the physical external memory, the image of the physical external memory can
be seen.
The internal RAM area and on-chip peripheral I/O area are not subject to external memory access.
Figure 3-5. External Memory Area (when expanded to 64 K, 256 K, or 1 Mbytes)
Mask ROM Flash memory
internal version internal version
xxFFFFFFH xxFFFFFFH
xxFFDFFFH xxFFBFFFH
xx100000H xx100000H
xx000000H xx000000H
CHAPTER 3 CPU FUNCTIONS
On-chip peripheral I/O
Internal RAM
Image
Image
Image
Internal ROM
Physical external memory
External memory
67
xFFFFH
x0000H