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ADDRESS SPACES S3C8245/P8245/C8249/P8249
2-2
PROGRAM MEMORY (ROM)
Program memory (ROM) stores program codes or table data. The S3C8249 has 32K bytes internal mask-
programmable program memory, the S3C8245 has 16K bytes.
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
255
(HEX)
7FFFH (S3C8249)
0FFH
0H
0
Interrupt
Vector Area
32K-byte
3FFFH (S3C8245)
4000H
16383
16384
16K-byte
Figure 2-1. Program Memory Address Space