R8C datasheet(32/106 Pages) RENESAS

32 / 106 page

R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group

3. Memory

R01DS0011EJ0100 Rev.1.00

Page 32 of 102

Dec 21, 2010

Memory

Figure 3.1 is a Memory Map of each group. Each group has a 1-Mbyte address space from addresses 00000h to

FFFFFh. 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. The starting address of each interrupt

routine is stored here.

The internal ROM (data flash) is allocated addresses 03000h to 037FFh.

The internal RAM is allocated higher addresses, beginning with address 00400h. For example, a 3.5-Kbyte internal

RAM area is allocated addresses 00400h to 011FFh. 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 addresses 00000h to 002FFh and 02C00h to 02FFFh. Peripheral

function control registers are allocated here. All unallocated spaces within the SFRs are reserved and cannot be

accessed by users.

Figure 3.1

Memory Map

FFFFFh

0FFFFh

0YYYYh

0XXXXh

00400h

002FFh

00000h

Internal ROM

(program ROM)

Internal RAM

0FFFFh

0FFDCh

ZZZZZh

Internal ROM

(program ROM)

Undefined instruction

Overflow

BRK instruction

Address match

Single step

Watchdog timer, oscillation stop detection, voltage monitor

Address break

(Reserved)

Reset

037FFh

03000h

Internal ROM

(data flash) (1)

02C00h

02FFFh

Reserved area

0FFD8h

Part Number

Internal ROM

Internal RAM

Capacity

Address

0YYYYh

Capacity

Address

0XXXXh

Address

ZZZZZh

Data

Flash

Available

16 Kbytes

0C000h

0FFFFh

2 Kbytes

00BFFh

R5F2LA34ANFP, R5F2LA34ADFP,

R5F2LA54ANFP, R5F2LA54ADFP,

R5F2LA64ANFP, R5F2LA64ANFA, R5F2LA64ADFP, R5F2LA64ADFA,

R5F2LA84ANFP, R5F2LA84ANFA, R5F2LA84ADFP, R5F2LA84ADFA

SFR

(Refer to 4. Special

Function Registers

(SFRs))

SFR

(Refer to 4. Special

Function Registers

(SFRs))

8 Kbytes

0E000h

0FFFFh

2 Kbytes

00BFFh

R5F2LA32ANFP, R5F2LA32ADFP,

R5F2LA52ANFP, R5F2LA52ADFP

R5F2LA36ANFP, R5F2LA36ADFP,

R5F2LA56ANFP, R5F2LA56ADFP,

R5F2LA66ANFP, R5F2LA66ANFA, R5F2LA66ADFP, R5F2LA66ADFA,

R5F2LA86ANFP, R5F2LA86ANFA, R5F2LA86ADFP, R5F2LA86ADFA

R5F2LA67ANFP, R5F2LA67ANFA, R5F2LA67ADFP, R5F2LA67ADFA,

R5F2LA87ANFP, R5F2LA87ANFA, R5F2LA87ADFP, R5F2LA87ADFA

R5F2LA38ANFP, R5F2LA38ADFP,

R5F2LA58ANFP, R5F2LA58ADFP,

R5F2LA68ANFP, R5F2LA68ANFA, R5F2LA68ADFP, R5F2LA68ADFA,

R5F2LA88ANFP, R5F2LA88ANFA, R5F2LA88ADFP, R5F2LA88ADFA

32 Kbytes

08000h

0FFFFh

2 Kbytes

00BFFh

48 Kbytes

04000h

0FFFFh

3.5 Kbytes

011FFh

64 Kbytes

04000h

13FFFh

3.5 Kbytes

011FFh

Notes:

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

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

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