Renesas R8C/15 Manual de usuario descargar pdf (Pagina 11)

Rev.0.10 Mar 4, 2004 Page 11 of 16

REJ03B0078-0010Z

Under development

R8C/15 Group 3. Memory

Preliminary specification

Specications in this manual are tentative and subject to change.

3. Memory

Figure 3.1 is a memory map of this MCU. The address space extends the 1M bytes from address 00000h

to FFFFFh.

The internal ROM (program area) is allocated in a lower address direction beginning with address 0FFFFh.

For example, a 16-Kbyte internal ROM is allocated to the addresses from 0C000h to 0FFFFh.

The fixed interrupt vector table is allocated to the addresses from 0FFDCh to 0FFFFh. Therefore, store the

start address of each interrupt routine here.

The internal ROM (data area) is allocated to the addresses from 02400h to 02BFFh.

The internal RAM is allocated in an upper address direction beginning with address 00400h. For example,

a 1-Kbyte internal RAM is allocated to the addresses from 00400h to 007FFh. In addition to storing data,

the internal RAM also stores the stack used when calling subroutines and when interrupts are generated.

Special function registers (SFR) are allocated to the addresses from 00000h to 002FFh. Peripheral function

control registers are located here. Of the SFR, any space which has no functions allocated is reserved for

future use and cannot be used by users.

Figure 3.1 Memory Map

Undefined instruction

Overflow

BRK instruction

Address match

Single step

Watchdog timer•Oscillation stop detection•Voltage detection

(Reserved)

Reset

Type name

Internal ROM Internal RAM

S iz e Address 0YYYYh

R5F21154SP, R5F21154DSP, R5F21154DD, R5F21154DDD

R5F21153SP, R5F21153DSP, R5F21153DD, R5F21153DDD

R5F21152SP, R5F21152DSP, R5F21152DD, R5F21152DDD

16K bytes

12K bytes

8K bytes

0C000h

0D000h

0E000h

1K bytes

768 bytes

512 bytes

007FFh

006FFh

005FFh

FFFFFh

0FFFFh

0YYYYh

0XXXXh

00400h

002FFh

00000h

Internal ROM

(Program area)

Expanding area

Internal RAM

SFR

(See Chapter 4 for details.)

0FFFFh

0FFDCh

S iz e Address 0XXXXh

02BFFh

02400h

Internal ROM

(Data area)

(1)

NOTES:

1. The data flash ROM block A (1K bytes) and block B (1K bytes) are shown.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 17 18

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Renesas R8C/15 Manual de usuario Pagina 11

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