R5F21346UDFP RENESAS [Renesas Technology Corp], R5F21346UDFP Datasheet - Page 14

• Manufacturer Part Number: R5F21346UDFP
• Manufacturer: RENESAS [Renesas Technology Corp]

R8C/34U Group
R01DS0039EJ0100 Rev.1.00
Feb 25, 2011
3.
3.1
Figure 3.1
Notes:
Figure 3.1 is a Memory Map of R8C/34U Group. The R8C/34U 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 64-Kbyte internal ROM area is allocated addresses 04000h to 13FFFh.
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 8-Kbyte internal
RAM area is allocated addresses 00400h to 023FFh. 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.
0XXXXh
0YYYYh
ZZZZZh
0FFFFh
FFFFFh
02C00h
02FFFh
03FFFh
002FFh
00000h
00400h
03000h
R5F21346UNFP, R5F21346UDFP
R5F21346UNXXXFP, R5F21346UDXXXFP
R5F21348UNFP, R5F21348UDFP
R5F21348UNXXXFP, R5F21348UDXXXFP
Memory
1. The data flash indicates block A (1 Kbyte), block B (1 Kbyte), block C (1 Kbyte), and block 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.
R8C/34U Group
(Refer to 4. S pecial Function
(Refer to 4. S pecial Function
(program ROM)
(program ROM)
R egisters (SFRs))
R egisters (SFRs))
(data flash)
Internal ROM
Internal ROM
Internal ROM
Internal RAM
Part Number
Memory Map of R8C/34U Group
SFR
SFR
(2)
(1)
32 Kbytes
64 Kbytes
Size
0FFDCh
0FFFFh
Address 0YYYYh
Internal ROM
08000h
04000h
Watchdog timer, oscillation stop detection, voltage monitor
Address ZZZZZh
13FFFh
-
Undefined instruction
BRK instruction
Address match
Address break
Single step
(Reserved)
Overflow
Reset
4 Kbytes
8 Kbytes
Size
Internal RAM
Address 0XXXXh
013FFh
023FFh
Page 14 of 58
3. Memory