UPD784938 Datasheet, PDF (72/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

Figure 3-4. µPD784938, 78F4938 Memory Map
When LOCATION 0 instruction is executed
FFFFFH
External memory^{Note 1}
(832 Kbytes)
40000H
3FFFFH
Internal ROM
(196,608 bytes)
10000H
0FFFFH
0FFDFH
Special function registers (SFRs)
0 F F D 0 H ^{Note 1}
0FF00H
(256 bytes)
0FEFFH
Internal RAM
(10,240 bytes)
0D600H
0D5FFH
Internal ROM
Note
(54,768 bytes)
4
00000H
0FEFFH
0FE80H
0FE7FH
General-purpose
register
(128 bytes)
FFEFFH
FFE80H
FFE7FH
When LOCATION 0FH instruction is executed
F F F F F H Special function registers (SFRs)
FFFDFH
FFFD0H
Note 1
FFF00H
(256 bytes)
FFEFFH
Internal RAM
(10,240 bytes)
FD600H
FD5FFH
0 F E 3 9 H _{Macro service control}
0 F E 0 6 H ^{word area (42 bytes)}
FFE39H
FFE06H
0FD00H
0FCFFH
0D600H
Data area (512 bytes)
Program/data area
(9,728 bytes)
FFD00H
FFCFFH
FD600H
3FFFFH
10000H
0DEFFH
01000H
00FFFH
00800H
007FFH
00080H
0007FH
00040H
0003FH
00000H
Note 2
Program/data area
Note 3
CALLF entry area
(2 Kbytes)
CALLT table area
(64 bytes)
Vector table area
(64 bytes)
3FFFFH
External memory^{Note 1}
(843,520 bytes)
40000H
3FFFFH
Internal ROM
Note
(256 Kbytes)
4
00000H
Notes 1. Accessed in external memory expansion mode.
2. The 10,496 bytes of this area can be used as internal ROM only when the LOCATION 0FH instruction is executed.
3. 251,647 bytes when the LOCATION 0 instruction is executed, and 262,143 bytes when the LOCATION 0FH instruction is
executed.
4. Base area, reset or interrupt entry area, excluding internal RAM in the case of reset.
5. In the case of µPD78F4938: Flash memory