Datasheet

Rev.1.20 Jan 27, 2006 page 9 of 27
REJ03B0069-0120
R8C/13 Group 3. Memory
3. Memory
Figure 3.1 is a memory map of this MCU. This MCU provides 1-Mbyte address space from addresses
0000016 to FFFFF16.
The internal ROM (program ROM) is allocated lower addresses beginning with address 0FFFF16. For
example, a 16-Kbyte internal ROM is allocated addresses from 0C00016 to 0FFFF16.
The fixed interrupt vector table is allocated addresses 0FFDC16 to 0FFFF16. They store the starting
address of each interrupt routine.
The internal ROM (data flash) is allocated addresses from 0200016 to 02FFF16.
The internal RAM is allocated higher addresses beginning with address 0040016. For example, a 1-Kbyte
internal RAM is allocated addresses 0040016 to 007FF16. The internal RAM is used not only for storing
data, but for calling subroutines and stacks when interrupt request is acknowledged.
Special function registers (SFR) are allocated addresses 0000016 to 002FF16. The peripheral function
control registers are located them. All addresses, which have nothing allocated within the SFR, are re-
served area and cannot be accessed by users.
Figure 3.1 Memory Map
00000 16
0YYYY 16
0FFFF 16
002FF 16
0040016
Internal ROM
(program ROM)
SFR
(See Chapter 4 for details.)
0FFDC 16
0FFFF 16
Undefined instruction
Overflow
BRK instruction
Address match
Single step
Watchdog timer,Oscillation stop detection,Voltage detection
Reset
(Reserved)
Type name
0XXXX 16
Internal RAM
FFFFF16
Address 0XXXX 16
005FF 16
Internal RAM
Size
007FF 16
512 bytes
1K bytes
006FF
16
768 bytes
Address 0YYYY
16
0E000 16
Internal ROM
Size
0C000 16
8K bytes
16K bytes
0D000
16
12K bytes
Expansion area
(Reserved)
R5F21134FP, R5F21134DFP
R5F21133FP, R5F21133DFP
R5F21132FP, R5F21132DFP
02000 16
02FFF16
Internal ROM
(data flash)
(1)
NOTES:
1. The data flash block A (2K bytes) and block B (2K bytes) are shown.
2. Blank spaces are reserved. No access is allowed.