R01DS0012EJ0110_15 Datasheet, PDF (25/70 Pages) Renesas Technology Corp – RENESAS MCU

R8C/34W Group, R8C/34X Group, R8C/34Y Group, R8C/34Z Group
3. Memory
3.3 R8C/34Y Group
Figure 3.3 is a Memory Map of R8C/34Y Group. The R8C/34Y Group has a 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 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 03FFFh.
The internal RAM is allocated higher addresses, beginning with address 00400h. For example, a 4-Kbyte internal
RAM area is allocated addresses 00400h to 013FFh. 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 (the SFR areas
for the DTC and other modules). Peripheral function control registers are allocated here. All unallocated spaces
within the SFRs are reserved and cannot be accessed by users.
00000h
002FFh
00400h
0XXXXh
SFR
(Refer to 4. Special
Function Registers
(SFRs))
Internal RAM
02C00h
02FFFh
03000h
03FFFh
SFR ⁽²⁾
(Refer to 4. Special Function
Registers (SFRs))
Internal ROM
(data flash) ⁽¹⁾
0YYYYh
0FFFFh
Internal ROM
(program ROM)
ZZZZZh
Internal ROM
(program ROM)
0FFDCh
0FFFFh
Undefined instruction
Overflow
BRK instruction
Address match
Single step
Watchdog timer, oscillation stop detection, voltage monitor
Address break
(Reserved)
Reset
FFFFFh
Notes:
1. The Data Flash memory indicates blocks A (1 Kbyte), B (1 Kbyte), C (1 Kbyte), and D (1 Kbyte).
2. The SFR areas for the DTC and other modules are allocated to addresses 02C00h to 02FFFh.
3. The blank areas are reserved and cannot be accessed by users.
Part Number
Internal ROM
Size
Address 0YYYYh Address ZZZZZh
Internal RAM
Size
Address 0XXXXh
R5F21346YJFP, R5F21346YKFP
R5F21347YJFP, R5F21347YKFP
R5F21348YJFP, R5F21348YKFP
R5F2134AYJFP, R5F2134AYKFP
32 Kbytes
48 Kbytes
64 Kbytes
96 Kbytes
08000h
04000h
04000h
04000h
13FFFh
1BFFFh
2.5 Kbytes
4 Kbytes
6 Kbytes
8 Kbytes
00DFFh
013FFh
01BFFh
023FFh
R5F2134CYJFP, R5F2134CYKFP
128 Kbytes
04000h
23FFFh
10 Kbytes
02BFFh
Figure 3.3 Memory Map of R8C/34Y Group
R01DS0012EJ0110 Rev.1.10
Jan 31, 2013
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