R5F2M131BNFP datasheet(13/51 Pages) RENESAS

13 / 51 page

R8C/M13B Group

3. Address Space

R01DS0005EJ0100 Rev.1.00

Page 13 of 48

Mar 14, 2011

Address Space

3.1

Memory Map

Figure 3.1 shows the Memory Map. The R8C/M13B Group have a 1-Mbyte address space from addresses 00000h

to FFFFFh. The internal ROM (program ROM) is allocated at lower addresses, beginning with address 0FFFFh.

For example, an 8-Kbyte internal ROM area is allocated at addresses 0E000h to 0FFFFh.

The fixed interrupt vector table is allocated at addresses 0FFDCh to 0FFFFh. The start address of each interrupt

routine is stored here.

The internal ROM (data flash) is allocated at addresses 03000h to 037FFh.

The internal RAM is allocated at higher addresses, beginning with address 00400h. For example, a 512-byte

internal RAM area is allocated at addresses 00400h to 005FFh. The internal RAM is used not only for data storage

but also as a stack area when a subroutine is called or when an interrupt request is acknowledged.

Special function registers (SFRs) are allocated at addresses 00000h to 002FFh. Peripheral function control registers

are allocated here. All unallocated spaces within the SFRs are reserved and cannot be accessed by users.

Figure 3.1

Memory Map

Notes:

1. Data flash indicates block A (1 Kbyte) and block B (1 Kbyte).

2. The blank areas are reserved. No access is allowed.

0XXXXh

00000h

Internal ROM

(program ROM)

Internal RAM

SFR

(See 3.2 Special

Function Registers

(SFRs))

Internal ROM

(data flash) (1)

Expanded area

002FFh

03000h

037FFh

0YYYYh

0FFFFh

FFFFFh

00400h

0FFFFh

0FFDCh

0FFD8h

Watchdog timer, oscillation stop detection, voltage monitor 1

Undefined instruction

Overflow

BRK instruction

Address match

Single-step

(Reserved)

Reset

Reserved area

Part Number

R5F2M131BNFP, R5F2M131BDFP

R5F2M132BNFP, R5F2M132BDFP

R5F2M134BNFP, R5F2M134BDFP

Size

Address 0YYYYh

4 Kbytes

8 Kbytes

16 Kbytes

0F000h

0E000h

0C000h

Internal ROM

Address 0XXXXh

Size

384 bytes

512 bytes

1 Kbytes

0057Fh

005FFh

007FFh

Internal RAM

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