UPD784907 Datasheet, PDF (23/98 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLER

When the LOCATION 0
instruction is executed
F FF F FH
External memory
(928 Kbytes)^{Note 1}
1 8000H
1 7FFFH
Internal ROM
1 0000H
(32,768 bytes)
0 FFFFH
0 FFDFH
Special function registers (SFRs)
0 FFD0H ^{Note 1}
0 FF 0 0H
(256 bytes)
0 FEFFH
Internal RAM
(3,584 bytes)
0 F1 0 0H
0 F0FFH
Internal ROM _{Note 4}
(61,696 bytes)
0 0000H
Figure 7-1. µPD784907 Memory Map
0 FEFFH
General-purpose
registers (128 bytes)
0 FE8 0H
0 FE7FH
F FEF FH
FFE8 0H
F FE 7 FH
When the LOCATION 0FH
instruction is executed
F FF F FH
F FFDFH
F FFD0H
Special function registers (SFRs)
Note 1
F FF 0 0H
(256 bytes)
F FEF FH
Internal RAM
(3,584 bytes)
F F1 0 0H
F F 0 F FH
0 FE 3 9H Macro service control
0 FE 0 6H ^{word area (42 bytes)}
Data area (512 bytes)
0 FD0 0H
0 FCFFH
Program/data area
(3,072 bytes)
0 F1 0 0H
FFE3 9H
FFE0 6H
F FD0 0H
F FCFFH
F F1 0 0H
External memory
(946,432 bytes)^{Note 1}
1 7FFFH
1 0000H
Note 2
0 F0FFH
0 1000H
0 0FFFH
0 0800H
0 07FFH
0 0080H
0 00 7FH
0 0040H
0 00 3FH
0 0000H
Program/data area^{Note 3}
CALLF entry area
(2 Kbytes)
CALLT table area
(64 bytes)
Vector table area
(64 bytes)
1 7FFFH
1 8000H
1 7FFFH
0 0000H
Internal ROM _{Note 4}
(96 Kbytes)
Notes 1. Accessed in external memory expansion mode.
2. This 3,840-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: 94,464 bytes
When the LOCATION 0FH instruction is executed: 98,304 bytes
4. Base area and entry area based on a reset or interrupt. However, internal RAM is not used as a reset entry area.