UPD784907 Datasheet, PDF (24/98 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLER

When the LOCATION 0
instruction is executed
FFFFFH
External memory
(896 Kbytes)^{Note 1}
20 0 0 0H
1FFFFH
Internal ROM
10 0 0 0H
(65,536 bytes)
0FFFFH
0FFDFH
0FFD0H
0FF 0 0H
Special function registers (SFRs)
Note 1
(256 bytes)
0FEFFH
Internal RAM
(4,352 bytes)
0EE0 0H
0EDF FH
Internal ROM
(60,928 bytes) ^{Note 4}
00 0 0 0H
Figure 7-2. µPD784908 Memory Map
0FEFFH
General-purpose
registers (128 bytes)
0FE8 0H
0FE 7 FH
FFEFFH
When the LOCATION 0FH
instruction is executed
FF F F FH
F F F D F H ^{Special function registers (SFRs)}
F F F D 0 H Note 1
FFF 0 0H
(256 bytes)
FFEFFH
Internal RAM
(4,352 bytes)
FFE8 0H FEE0 0H
FFE7 FH FEDFFH
0FE 3 9H _{Macro service control}
0FE 0 6H ^{word area (42 bytes)}
FFE3 9H
FFE0 6H
Data area (512 bytes)
0FD0 0H
0FCFFH
Program/data area
(3,840 bytes)
0EE0 0H
FFD0 0H
FFCFFH
FEE0 0H
External memory
(912,896 bytes)^{Note 1}
1FFFFH
10 0 0 0H
Note 2
1FFFFH
0EDF FH
01 0 0 0H
0 0 F F FH
00 8 0 0H
00 7FFH
00 0 8 0H
00 0 7FH
00 0 4 0H
00 0 3FH
00 0 0 0H
Program/data area^{Note 3}
CALLF entry area
(2 Kbytes)
CALLT table area
(64 bytes)
Vector table area
(64 bytes)
20 0 0 0H
1FFFFH
Internal ROM
(128 Kbytes)
Note 4
00 0 0 0H
Notes 1. Accessed in external memory expansion mode.
2. This 4,608-byte area can be used as an internal ROM area only when the LOCATION 0FH instruction is executed.
3. When the LOCATION 0 instruction is executed: 126,464 bytes
When the LOCATION 0FH instruction is executed: 131,072 bytes
4. Base area and entry area based on a reset or interrupt. However, internal RAM is not used as a reset entry area.