R5F21143SP View Datasheet(PDF) - Renesas Electronics

Part Name

Description

View to exact match

R5F21143SP

R8C/14 Group, R8C/15 Group SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Renesas Electronics 

R8C/14 Group, R8C/15 Group

3. Memory

3.2 R8C/15 Group

Figure 3.2 is a Memory Map of R8C/15 Group. The R8C/15 group provides 1-Mbyte address space from

addresses 00000h to FFFFFh.

The internal ROM (program ROM) is allocated lower addresses beginning with address 0FFFFh. For

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

The fixed interrupt vector table is allocated addresses 0FFDCh to 0FFFFh. They store the starting

address of each interrupt routine.

The internal ROM (data flash) is allocated addresses 02400h to 02BFFh.

The internal RAM is allocated higher addresses beginning with address 00400h. For example, a 1-

Kbyte internal RAM is allocated addresses 00400h to 007FFh. The internal RAM is used not only for

storing data but for calling subroutines and stacks when interrupt request is acknowledged.

Special function registers (SFR) are allocated addresses 00000h to 002FFh. The peripheral function

control registers are allocated them. All addresses, which have nothing allocated within the SFR, are

reserved area and cannot be accessed by users.

00000h

002FFh

SFR

(See 4. Special Function

Register (SFR))

00400h

0XXXXh

Internal RAM

02400h

02BFFh

Internal ROM

(Data Flash)(1)

0YYYYh

0FFFFh

Internal ROM

(Program ROM)

0FFDCh

0FFFFh

Undefined Instruction

Overflow

BRK Instruction

Address Match

Single Step

Watchdog Timer • Oscillation Stop Detection • Voltage Monitor 2

Address Break

(Reserved)

Reset

Expansion Area

FFFFFh

NOTES:

1. The data flash block A (1 Kbyte) and block B (1 Kbyte) are shown.

2. Blank spaces are reserved. No access is allowed.

Part Number

R5F21154SP, R5F21154DSP

R5F21153SP, R5F21153DSP

R5F21152SP, R5F21152DSP

Internal ROM

Size

16K bytes

12K bytes

8K bytes

0YYYYh

0C000h

0D000h

0E000h

Internal RAM

Size

1K byte

768 bytes

512 bytes

0XXXXh

007FFh

006FFh

005FFh

Figure 3.2 Memory Map of R8C/15 Group

Rev.2.10 Jan 19, 2006 Page 14 of 253

REJ09B0164-0210

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