R5F2136CSDFP datasheet(15/61 Pages) RENESAS

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R8C/36T-A Group

3. Address Space

R01DS0055EJ0100 Rev.1.00

Page 15 of 58

Dec 09, 2011

Address Space

3.1

Memory Map

Figure 3.1 shows the Memory Map. The R8C/36T-A Group has a 1-Mbyte address space from addresses 00000h to

FFFFFh. Up to 32 Kbytes of the internal ROM (program ROM) is allocated at lower addresses, beginning with

address 0FFFFh. The area in excess of 32 Kbytes is allocated at higher addresses, beginning with address 10000h.

For example, a 64-Kbyte internal ROM is allocated at addresses 08000h to 17FFFh.

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 07000h to 07FFFh.

The internal RAM is allocated at higher addresses, beginning with address 00400h. For example, a 6-Kbyte

internal RAM is allocated at addresses 00400h to 01BFFh. 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 and addresses 06800h to 06FFFh.

Peripheral function control registers are allocated here. All unallocated locations within the SFRs are reserved and

cannot be accessed by users.

Figure 3.1

Memory Map

0XXXXh

00000h

Internal ROM

(program ROM)

Internal RAM

SFR

Internal ROM

(data flash)

(1)

002FFh

00400h

07000h

07FFFh

0YYYYh

0FFFFh

FFFFFh

Watchdog timer, oscillation stop detection, voltage monitor

Undefined instruction

Overflow

BRK instruction

Address match

Single-step

Address break

(Reserved)

Reset

0FFFFh

0FFDCh

Internal ROM

(program ROM)

ZZZZZh

06FFFh

06800h

SFR

(2)

Notes:

1. Data flash indicates block A (1 Kbyte), block B (1 Kbyte), block C (1 Kbyte), and block D (1 Kbyte).

2. Addresses 06800h to 06FFFh are used for the ELC, DTC, and TSCU SFR areas.

3. The blank areas are reserved. No access is allowed.

Part Number

Capacity

Address 0YYYYh

Internal ROM

Address 0XXXXh

Capacity

Internal RAM

Address ZZZZZh

64 Kbytes

96 Kbytes

128 Kbytes

08000h

17FFFh

1FFFFh

27FFFh

01BFFh

023FFh

02BFFh

6 Kbytes

8 Kbytes

10 Kbytes

R5F21368SNFP/FA, R5F21368SDFP/FA

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