upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 75
upd70f3017ay
Manufacturer Part Number
upd70f3017ay
Description
V850/sa1tm 32-/16-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3017AY.pdf
(492 pages)
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(4) External memory area
The V850/SA1 can use an area of up to 16 MB (xx100000H to xxFFBFFFH) for external memory accesses (in
single-chip mode: during external expansion).
64 KB, 256 KB, 1 MB, or 4 MB 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.
xxFFFFFFH
xxFFBFFFH
xx100000H
xx000000H
Figure 3-13. External Memory Area (When Expanded to 64 KB, 256 KB, or 1 MB)
On-chip peripheral I/O
Internal ROM
Internal RAM
Image
Image
Image
CHAPTER 3 CPU FUNCTIONS
User’s Manual U12768EJ4V1UD
Physical external memory
External memory
xFFFFH
x0000H
75
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