R5F36CAMNFB datasheet(18/99 Pages) RENESAS

18 / 99 page

R01DS0034EJ0200 Rev.2.00

Page 18 of 95

Feb 07, 2011

M16C/6C Group

3. Address Space

3.2

Memory Map

Special function registers (SFRs) are allocated from address 00000h to 003FFh and from 0D000h to

0D7FFh. Peripheral function control registers are located here. All blank areas within SFRs are reserved.

Do not access these areas.

Internal RAM is allocated from address 00400h and higher, with 10 KB of internal RAM allocated from

00400h to 02BFFh. Internal RAM is used not only for data storage, but also for the stack area when

subroutines are called or when an interrupt request is accepted.

The internal ROM is flash memory. Three internal ROM areas are available: data flash, program ROM 1,

and program ROM 2.

The data flash is allocated from 0E000h to 0FFFFh. This data flash area is mostly used for data storage, but

can also store programs.

Program ROM 2 is allocated from 10000h to 13FFFh. Program ROM 1 is allocated from FFFFFh and lower,

with the 64-KB program ROM 1 area allocated from address F0000h to FFFFFh.

The special page vectors are allocated from FFE00h to FFFD7h. They are used for the JMPS and JSRS

instructions. Refer to the M16C/60, M16C/20, M16C/Tiny Series Software Manual for details.

The fixed vector table for interrupts is allocated from FFFDCh to FFFFFh.

The 256 bytes beginning with the start address set in the INTB register compose the relocatable vector table

for interrupts.

Figure 3.2 shows the Memory Map.

Figure 3.2

Memory Map

Notes:

1. Do not access reserved areas.

2. The figure above applies under the following conditions:

- Memory expansion mode

- The PM10 bit in the PM1 register is 1

(addresses 0E000h to 0FFFFh are used as data flash)

- The PRG2C0 bit in the PRG2C register is 0 (program ROM 2 enabled)

- The PM13 bit in the PM1 register is 1

(all areas in internal RAM, and the program ROM 1 area from 80000h are usable)

3. Do not change the data from FFh.

00000h

XXXXXh

0D000h

00400h

0D800h

0E000h

10000h

14000h

80000h

YYYYYh

FFFFFh

28000h

27000h

FFFFFh

FFFDCh

FFE00h

FFFD8h

13FFFh

13FF0h

13000h

Internal RAM

Size

12 KB

20 KB

31 KB

Address XXXXXh

033FFh

053FFh

07FFFh

Program ROM 1

Size

128 KB

256 KB

384 KB

Address YYYYYh

E0000h

C0000h

A0000h

512 KB

80000h

On-chip debugger

monitor area

User boot code area

Relocatable vector table

256 bytes beginning with the

start address set in the INTB

Special page vector table

Reserved area (3)

Fixed vector table

Address for ID code stored

OFS1 address

SFR

Internal RAM

Reserved area (1)

SFR

External area

Internal ROM

(data flash)

Internal ROM

(program ROM 2)

External area

Reserved area (1)

External area

Reserved area (1)

Internal ROM

(program ROM 1)

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