R8CSLASH15 datasheet(205/277 Pages) RENESAS

205 / 277 page

R8C/14 Group, R8C/15 Group

18. Flash Memory Version

Rev.2.10

Jan 19, 2006

Page 193 of 253

REJ09B0164-0210

18.2

Memory Map

The flash memory contains a user ROM area and a boot ROM area (reserved area). Figure 18.1 shows

the Flash Memory Block Diagram for R8C/14 Group. Figure 18.2 shows the Flash Memory Block

Diagram for R8C/15 Group.

The user ROM area of R8C/15 group contains an area (program ROM) which stores a microcomputer

operating program and the 1-Kbyte Block A and B (data flash).

The user ROM area is divided into several blocks. The user ROM area can be rewritten in CPU rewrite

and standard serial I/O and parallel I/O modes.

When rewriting the Block 0 and Block 1 in CPU rewrite mode, set the FMR02 bit in the FMR0 register to

“1” (rewrite enables), and when setting the FMR15 bit in the FMR1 register to “0” (rewrite enables),

Block 0 is rewritable. When setting the FMR16 bit to “0” (rewrite enables), Block 1 is rewritable.

The rewrite control program for standard serial I/O mode is stored in boot ROM area before shipment.

The boot ROM area and the user ROM area share the same address, but have an another memory.

Figure 18.1

Flash Memory Block Diagram for R8C/14 Group

0C000h

0DFFFh

0E000h

0FFFFh

Boot ROM Area

(Reserved Area)(2)

0E000h

0FFFFh

NOTES:

1. When setting the FMR02 bit in the FMR0 register to “1” (enables to rewrite) and the FMR15 bit in the FMR1 register to “0” (enable to rewrite),

Block 0 is rewritable. When setting the FMR16 bit to “0” (enables to rewrite), Block 1 is rewritable (only for CPU rewrite mode).

This area is to store the boot program provided by Renesas Technology.

0D000h

0DFFFh

0E000h

0FFFFh

0E000h

0FFFFh

12 Kbytes ROM Product

8 Kbytes ROM Product

16 Kbytes ROM Product

Block 1 : 8 Kbytes(1)

Block 0 : 8 Kbytes(1)

8 Kbytes

Block 1 : 4 Kbytes(1)

Block 0 : 8 Kbytes(1)

User ROM Area

Program ROM

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