R5F2M121ANDD datasheet(14/48 Pages) RENESAS

14 / 48 page

R8C/M11A Group, R8C/M12A Group

3. Address Space

Under development Preliminary document

Specifications in this document are tentative and subject to change.

R01DS0010EJ0010 Rev.0.10

Page 14 of 45

Aug 25, 2010

Address Space

3.1

Memory Map

Figure 3.1 shows the Memory Map. The R8C/M11A Group and R8C/M12A 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 02FFFh. 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

R5F2M110ANSP, R5F2M110ANDD, R5F2M110ADSP,

R5F2M120ANSP, R5F2M120ANDD, R5F2M120ADSP

R5F2M111ANSP, R5F2M111ANDD, R5F2M111ADSP,

R5F2M121ANSP, R5F2M121ANDD, R5F2M121ADSP

R5F2M112ANSP, R5F2M112ANDD, R5F2M112ADSP,

R5F2M122ANSP, R5F2M122ANDD, R5F2M122ADSP

Capacity

Address 0YYYYh

2 Kbytes

4 Kbytes

8 Kbytes

0F800h

0F000h

0E000h

Internal ROM

Address 0XXXXh

Capacity

256 bytes

384 bytes

512 bytes

004FFh

0057Fh

005FFh

Internal RAM

R5F2M121ANDD 데이터시트(PDF) 14 Page - Renesas Technology Corp

R5F2M121ANDD 데이터시트(HTML) 14 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

데이터시트 다운로드

링크 URL