Memory Map - Renesas M16C Series Hardware Manual

R8C/11 Group

17.2 Memory Map

The ROM in the flash memory version is separated between a user ROM area and a boot ROM area
(reserved area). Figure 17.1 shows the block diagram of flash memory.
The user ROM area is divided into several blocks. The user ROM area can be rewritten in CPU rewrite
and standard serial input/output modes. Block 1 and Block 0 are enabled for rewrite in CPU rewrite mode
by setting the FMR02 bit in the FMR0 register to "1" (rewrite enabled).
The rewrite program for standard serial I/O mode is stored in the boot ROM area before shipment. The
boot ROM area and the user ROM area share the same address, but have an another memory.
1 6 K b y t e s R O M P r o d u c t
0 C 0 0 0
1 6
B l o c k 1 : 8 K b y t e s
0 D F F F
1 6
0 E 0 0 0
1 6
B l o c k 0 : 8 K b y t e s
0 F F F F
1 6
User ROM area
NOTES:
1. When setting the FMR02 bit in the FMR0 register to "1" (rewrite enabled) and the FMR15 bit in the FMR1 register to "0" (rewrite enabled), the Block 0
is rewritable. When setting the FMR16 bit to "0" (rewrite enabled), the Block 1 is rewritable (only for CPU rewrite mode).
2. This area is to store the boot program provided by Renesas Technology.
Figure 17.1 Flash Memory Block Diagram
Rev.1.20 Jan 27, 2006
REJ09B0062-0120
12 Kbytes ROM Product
(1 )
0 D 0 0 0
1 6
Block 1 : 4 Kbytes
0 D F F F
1 6
0 E 0 0 0
1 6
( 1 )
Block 0 : 8 Kbytes
0 F F F F
1 6
User ROM area
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(1)
8 Kbytes ROM Product
0 E 0 0 0
1 6
(1)
Block 0 : 8 Kbytes
0 F F F F
1 6
User ROM area
17. Memory Map
0 E 0 0 0
1 6
8 K b y t e s
(1)
0 F F F F
1 6
Boot ROM area
(reserved area) (2)