M38K09RFS datasheet(231/328 Pages) RENESAS

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2.13 Flash memory

Rev.2.00

Oct 05, 2006

page 102 of 111

38K0 Group

REJ09B0337-0200

APPLICATION

Fig. 2.13.1 Memory map of flash memory version for 38K0 Group

2.13 Flash memory

This paragraph explains the registers setting method and the notes related to the flash memory version.

2.13.1 Overview

The functions of the flash memory version are similar to those of the mask ROM version except that the

flash memory is built-in and some of the SFR area differ from that of the mask ROM version (refer to

“2.13.2 Memory map”).

In the flash memory version, the built-in flash memory can be programmed or erased by using the following

three modes.

• CPU rewrite mode

• Parallel I/O mode

• Standard serial I/O mode

2.13.2 Memory map

38K0 group flash memory version has 32 Kbytes of built-in flash memory.

Figure 2.13.1 shows the memory map of the flash memory version.

Internal RAM

area

(2 Kbyte)

Not used

Built-in flash memory

area

(32 Kbytes)

000016

004016

083F16

084016

0FE016

100016

FFFF16

RAM

800016

FFFF16

32 Kbytes

User ROM area

Boot ROM area

FFFF16

F00016

4 Kbytes

0FFF16

Reserved ROM area

800016

808016

SFR area

Not used

Note: Access to boot ROM area

Pararell I/O mode

CPU rewrite mode

Standard serial mode

Read/Write avilable

Read only available

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