Program Memory (Rom) - Samsung S3C84I8 User Manual

ADDRESS SPACES

PROGRAM MEMORY (ROM)

Program memory (ROM) stores program codes or table data. The S3C84I9/F84I9 has 32Kbytes of internal mask
programmable program memory and the S3C84I8/F84I8 has 8Kbytes of internal mask programmable program
memory. The program memory address range is therefore 0H-7FFFH and 0H-1FFFH (see Figure 2-1).
The first 256 bytes of the ROM (0H-0FFH) are reserved for interrupt vector addresses. Unused locations in this
address range can be used as normal program memory. If you use the vector address area to store a program
code, be careful not to overwrite the vector addresses stored in these locations.
The ROM address at which a program execution starts after a reset is 0100H.
(Decimal)
32,767
Internal
Program
Memory
(Flash)
ISP Sector
255
Interrupt Vector Area
Smart Option Rom Cell
0
S3F84I9
2-2
(HEX)
7FFFH
S3F84I9(32Kbyte)
07FFH
100H
03FH
03CH
00H
Figure 2-1. Program Memory Address Space
(Decimal)
8,192
Internal
Program
Memory
(Flash)
ISP Sector
255
Interrupt Vector Area
Smart Option Rom Cell
0
S3F84I8
S3C84I8/F84I8/C84I9/F84I9
(HEX)
1FFFH
S3F84I8(8Kbyte)
07FFH
100H
03FH
03CH
00H