CHAPTER 3 CPU ARCHITECTURE
User’s Manual U16899EJ2V0UD
51
Figure 3-6. Memory Map (
µ
PD78F0138HD)
FFFFH
FF00H
FEFFH
FEE0H
FEDFH
F800H
F7FFH
F400H
F3FFH
F000H
EFFFH
0000H
0040H
003FH
0000H
0800H
07FFH
1 0 0 0 H
0FFFH
EFFFH
Special function registers
(SFR)
256
×
8 bits
Internal high-speed RAM
1024
×
8 bits
General-purpose
registers
32
×
8 bits
Reserved
Flash memory
61440
×
8 bits
Program
memory space
Data memory
space
Vector table area
CALLT table area
CALLF entry area
Program area
Reserved
Internal expansion RAM
1024
×
8 bits
Note 2
RAM space in
which instruction
can be fetched
Note 1
FB00H
FAFFH
0080H
007FH
Program area
Option byte area
0081H
Note 2
Reserved for option byte
0084H
0083H
0190H
018FH
Notes 1. During on-chip debugging, 9 bytes of this area are used as the user data backup area for
communication.
2. During on-chip debugging, use of this area is disabled because it is used as the communication
command area (0084H to 018FH: debugger’s default setting).