M30302FAPFP datasheet(17/57 Pages) RENESAS

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M16C/30P Group

3. Memory

Rev.1.22

Mar 30, 2007

Page 17 of 53

REJ03B0088-0122

Memory

Figure 3.1 is a Memory Map of the M16C/30P group. The address space extends the 1 Mbyte from address 00000h to

FFFFFh.

The internal ROM is allocated in a lower address direction beginning with address FFFFFh. For example, a 64-Kbyte

internal ROM is allocated to the addresses from F0000h to FFFFFh.

The fixed interrupt vector table is allocated to the addresses from FFFDCh to FFFFFh. Therefore, store the start

address of each interrupt routine here.

The internal RAM is allocated in an upper address direction beginning with address 00400h. For example, a 5-Kbyte

internal RAM is allocated to the addresses from 00400h to 017FFh. In addition to storing data, the internal RAM also

stores the stack used when calling subroutines and when interrupts are generated. The SFR is allocated to the addresses

from 00000h to 003FFh. Peripheral function control registers are located here. Of the SFR, any area which has no

functions allocated is reserved for future use and cannot be used by users.

The special page vector table is allocated to the addresses from FFE00h to FFFDBh. This vector is used by the JMPS

or JSRS instruction. For details, refer to the M16C/60 and M16C/20 Series Software Manual.

Figure 3.1

Memory Map

00000h

XXXXXh

External area

Internal ROM

(program area) (5)

SFR

Internal RAM

Reserved area (1)

Reserved area (2, 4)

FFFDCh

NOTES:

1. During memory expansion and microprocessor modes, can be used.

2. In memory expansion mode, can be used.

3. As for the flash memory version, 4-Kbyte space (block A) exists.

4. Shown here is a memory map for the case where the PM10 bit in the PM1 register is “1” .

5. When using the masked ROM version, write nothing to internal ROM area.

6. When the PM13 bit is set to "0", the address of Internal ROM becomes D0000h, and when

the PM13 bit is set to "1", the address becomes C0000h.

Undefined instruction

Overflow

BRK instruction

Address match

Single step

Watchdog timer

Reset

Special page

vector table

DBC

NMI

Reserved area

External area

00400h

10000h

27000h

28000h

D0000h

YYYYYh

FFFFFh

FFE00h

FFFFFh

Internal ROM

(data area) (3, 4)

0FFFFh

0F000h

01BFFh

017FFh

Address XXXXXh

6 Kbytes

5 Kbytes

Size

Address YYYYYh

Size

E8000h

E0000h

128 Kbytes

96 Kbytes

D8000h

160 Kbytes

192 Kbytes

D0000h

Internal RAM

Internal ROM (5)

256 Kbytes

C0000h(6)

033FFh

12 Kbytes

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