R5F212A7SDFP__ Ver la hoja de datos (PDF) - Renesas Electronics

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R5F212A7SDFP__

R8C/2A Group, R8C/2B Group RENESAS MCU

Renesas Electronics 

R8C/2A Group, R8C/2B Group

3. Memory

3.2 R8C/2B Group

Figure 3.2 is a Memory Map of R8C/2B Group. The R8C/2B group has 1 Mbyte of address space from addresses

00000h to FFFFFh.

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

48-Kbyte internal ROM area is allocated addresses 04000h 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 area is allocated higher addresses, beginning with address 00400h. For example, a 2.5-Kbyte

internal RAM is allocated addresses 00400h to 00DFFh. The internal RAM is used not only for storing data but

also for calling subroutines and as stacks when interrupt requests are acknowledged.

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

registers are allocated here. All addresses within the SFR, which have nothing allocated are reserved for future use

and cannot be accessed by users.

00000h

002FFh

SFR

(Refer to 4. Special

Function Registers

(SFRs))

00400h

0XXXXh

Internal RAM

02400h

02BFFh

03000h

0WWWWh

0YYYYh

0FFFFh

ZZZZZh

FFFFFh

Internal ROM

(data flash)(1)

Internal RAM

Internal ROM

(program ROM)

Internal ROM

(program ROM)

Expanded area

0FFDCh

0FFFFh

Undefined instruction

Overflow

BRK instruction

Address match

Single step

Watchdog timer, oscillation stop detection, voltage monitor

(Reserved)

(Reserved)

Reset

NOTES:

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

2. The blank regions are reserved. Do not access locations in these regions.

Part Number

Internal ROM

Internal RAM

Size Address 0YYYYh Address ZZZZZh Size Address 0XXXXh Address 0WWWWh

R5F212B7SNFP, R5F212B7SDFP, 48 Kbytes

R5F212B7SNFA, R5F212B7SDFA

R5F212B8SNFP, R5F212B8SDFP, 64 Kbytes

R5F212B8SNFA, R5F212B8SDFA

R5F212BASNFP, R5F212BASDFP, 96 Kbytes

R5F212BASNFA, R5F212BASDFA

R5F212BCSNFP, R5F212BCSDFP, 128 Kbytes

R5F212BCSNFA, R5F212BCSDFA

04000h

04000h

04000h

04000h

−

13FFFh

1BFFFh

23FFFh

2.5 Kbytes

3 Kbytes

7 Kbytes

7.5 Kbytes

00DFFh

00FFFh

011FFh

011FFh

−

−

03DFFh

03FFFh

Figure 3.2 Memory Map of R8C/2B Group

Rev.1.00 Feb 09, 2007 Page 18 of 55

REJ03B0182-0100

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