PD178046_15 Datasheet, PDF (17/42 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD178046, 178048
2. MEMORY SPACE
Figure 2-1 shows the memory map of the µPD178046 and 178048.
Figure 2-1. Memory Map
FFFFH
Special function register (SFR)
FF00H
256 × 8 bits
F E F F H _{General-purpose register}
FEE0H
32 × 8 bits
F E D F H _{Internal high-speed RAM}
512 × 8 bits
FD00H
FCFFH
Cannot be used
Data memory
space
F800H
F7FFH
F600H
F5FFH
Internal expansion RAM
512 × 8 bits
Cannot be used
nnnnH+1
nnnnH
Program
memory space
Internal ROM^{Note 1}
0000H
nnnnH
1000H
0FFFH
0800H
07FFH
0080H
007FH
0040H
003FH
0000H
Program area
CALLF entry area
Program area
CALLT table area
Vector table area
CROM^{Note 2}
(6912 byte)
VRAM^{Note 3}
(432 byte)
Notes 1. The internal ROM capacity differs depending on the model (refer to the table below).
Part Number
µPD178046
µPD178048
Internal ROM End Address
nnnnH
BFFFH
EFFFH
2. CROM cannot be read by software.
3. VRAM can be written via SFR.
Preliminary Product Information
15