r5f21346ykfp Renesas Electronics Corporation., r5f21346ykfp Datasheet - Page 25

• Manufacturer Part Number: r5f21346ykfp
• Description: R8c/34w Group, R8c/34x Group, R8c/34y Group, R8c/34z Group Renesas Mcu
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/34W Group, R8C/34X Group, R8C/34Y Group, R8C/34Z Group
REJ03B0312-0010 Rev.0.10
Apr 09, 2010
3.3
Figure 3.3
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.
R5F21346YJFP, R5F21346YKFP
R5F21347YJFP, R5F21347YKFP
R5F21348YJFP, R5F21348YKFP
R5F2134AYJFP, R5F2134AYKFP
R5F2134CYJFP, R5F2134CYKFP
0XXXXh
0YYYYh
02C00h
0FFFFh
ZZZZZh
FFFFFh
02FFFh
03FFFh
002FFh
00000h
00400h
03000h
Notes:
R8C/34Y Group
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.
(Refer to 4. Special Function
Part Number
Function Registers
(Refer to 4. Special
(program ROM)
(program ROM)
Preliminary document
Specifications in this document are tentative and subject to change.
Memory Map of R8C/34Y Group
Registers (SFRs))
Internal RAM
Internal ROM
Internal ROM
Internal ROM
(data flash)
(SFRs))
SFR
SFR
(2)
(1)
128 Kbytes
32 Kbytes
48 Kbytes
64 Kbytes
96 Kbytes
Size
0FFDCh
0FFFFh
Address 0YYYYh
08000h
04000h
04000h
04000h
04000h
Internal ROM
Watchdog timer, oscillation stop detection, voltage monitor
Undefined instruction
Address ZZZZZh
BRK instruction
Address match
Address break
Single step
(Reserved)
Overflow
1BFFFh
13FFFh
23FFFh
Reset
2.5 Kbytes
10 Kbytes
4 Kbytes
6 Kbytes
8 Kbytes
Size
Internal RAM
Address 0XXXXh
00DFFh
01BFFh
02BFFh
013FFh
023FFh
Page 25 of 67
3. Memory