Datasheet

R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group 3. Memory
R01DS0011EJ0101 Rev.1.01 Page 32 of 102
Oct 28, 2011
3. Memory
Figure 3.1 shows 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 higher addresses, beginning with address 03000h.
For example, two 1-Kbyte internal ROM (data flash) areas are allocated addresses 03000h to 037FFh. Two 2-Kbyte
internal RAM (data flash) areas are allocated addresses 03000h to 03FFFh.
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
0WWWWh
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
1 Kbyte × 2
16 Kbytes 0C000h 0FFFFh 2 Kbytes 00BFFh
SFR
(Refer to 4. Special
Function Registers
(SFRs))
SFR
(Refer to 4. Special
Function Registers
(SFRs))
8 Kbytes 0E000h 0FFFFh 2 Kbytes
00BFFh
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 and block B.
2. Blank spaces are reserved. No access is allowed.
128 Kbytes 04000h 23FFFh 5.5 Kbytes
019FFh
96 Kbytes 04000h 1BFFFh 5.5 Kbytes
019FFh
R5F2LA34ANFP, R5F2LA34ADFP,
R5F2LA54ANFP, R5F2LA54ADFP,
R5F2LA64ANFP, R5F2LA64ANFA, R5F2LA64ADFP, R5F2LA64ADFA,
R5F2LA84ANFP, R5F2LA84ANFA, R5F2LA84ADFP, R5F2LA84ADFA
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
Capacity
Address
0WWWWh
R5F2LA6AANFP, R5F2LA6AANFA, R5F2LA6CADFP, R5F2LA6CADFA,
R5F2LA8AANFP, R5F2LA8AANFA, R5F2LA8CADFP, R5F2LA8CADFA
R5F2LA6AANFP, R5F2LA6AANFA, R5F2LA6CADFP, R5F2LA6CADFA,
R5F2LA8AANFP, R5F2LA8AANFA, R5F2LA8CADFP, R5F2LA8CADFA
2 Kbytes × 2
037FFh
03FFFh