R5F3640MNFB datasheet(38/398 Pages) RENESAS

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REJ09B0392-0064 Rev.0.64

Oct 12, 2007

Page 17 of 373

Under development

Preliminary Specification

Specification in this preliminary version is subject to change.

M16C/64 Group

3. Memory

Memory

Figure 3.1 is a memory map of the M16C/64 Group. The M16C/64 Group has 1 Mbyte address space from

address 00000h to FFFFFh.

The internal ROM is flash memory. Program ROM 1 is allocated from address FFFFFh to lower.

For example, a 64-Kbyte program ROM 1 is addressed from F0000h to FFFFFh. An 8-Kbyte data flash is

addressed from 0E000h to 0FFFFh. This data flash space is used not only for data storage but also for pro-

gram storage. Program ROM 2 is allocated addresses 10000h to 13FFFh. The user boot code area is

assigned addresses 13FF0h to 13FFFh in the program ROM 2.

The fixed interrupt vectors are addressed from FFFDCh to FFFFFh. They store the starting address of each

interrupt routine.

The internal RAM is allocated from address 00400h to higher. For example, a 10-Kbyte internal RAM is

addressed from 00400h to 02BFFh. The internal RAM is used not only for data storage but also for stack

area when subroutines are called or when interrupt request are acknowledged.

SFRs are allocated from address 00000h to 003FFh and from 0D000h to 0D7FFh. Peripheral function con-

trol registers are located here. All blank spaces within SFRs are reserved and cannot be accessed by users.

The special page vectors are addressed from FFE00h to FFFD7h. They are used for the JMPS instruction

and JSRS instruction. Refer to the M16C/60, M16C/20 Series Software Manual for details.

In memory expansion mode or microprocessor mode, some spaces are reserved and cannot be accessed

by users.

Figure 3.1

Memory Map

NOTES:

1. This memory map is based on the case that the PM10 bit in the PM1 register is 1, the PM13 bit in the PM1 register is 1,

and the PRG2C0 bit in the PRG2C register is 0.

2. Available as external area in microprocessor mode.

Internal RAM

Reserved area

00000h

XXXXXh

0D000h

SFR

00400h

SFR

0D800h

Internal ROM

(data flash)

0E000h

Internal ROM

(program ROM 2)

10000h

External area

Reserved area (2)

Internal ROM

(program ROM 1)

14000h

80000h

YYYYYh

FFFFFh

Reserved area

28000h

27000h

Reset

Watchdog timer

Single step

Address match

BRK instruction

Overflow

Undefined instruction

Special page

vector table

FFFFFh

FFFDCh

FFE00h

DBC

NMI

Size

Address YYYYYh

Size

Address XXXXXh

Internal RAM

Internal ROM

128 Kbytes

E0000h

12 Kbytes

033FFh

256 Kbytes

C0000h

16 Kbytes

043FFh

512 Kbytes

80000h

31 Kbytes

07FFFh

Reserved area

External area

FFFD8h

13FFFh

13FF0h

User boot code area

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