r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 46

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
3.
3.1
Figure 3.1
Figure 3.1 is a Memory Map of R8C/34M Group. The R8C/34M Group has a 1-Mbyte address space from addresses
00000h to FFFFFh. For example, a 32-Kbyte internal ROM area is allocated addresses 08000h 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 2.5-Kbyte internal
RAM area is allocated addresses 00400h to 00DFFh. 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.
R5F21344MNFP, R5F21344MDFP
R5F21345MNFP, R5F21345MDFP
R5F21346MNFP, R5F21346MDFP
0XXXXh
0YYYYh
02C00h
0FFFFh
ZZZZZh
FFFFFh
02FFFh
03FFFh
Memory
002FFh
00000h
00400h
03000h
Notes:
1. Data flash indicates block A (1 Kbyte), block B (1 Kbyte), block C (1 Kbyte), and block D (1 Kbyte).
2. The blank areas are reserved and cannot be accessed by users.
R8C/34M Group
(Refer to 4. Special Function
Part Number
(program ROM)
(program ROM)
Function Registers
(Refer to 4. Special
Internal ROM
Internal ROM
Internal RAM
Registers (SFRs))
(data flash)
Internal ROM
Memory Map of R8C/34M Group
(SFRs))
SFR
SFR
(1)
16 Kbytes
24 Kbytes
32 Kbytes
Size
0FFDCh
0FFFFh
0FFD8h
Address 0YYYYh
0C000h
0A000h
08000h
Internal ROM
Watchdog timer, oscillation stop detection, voltage monitor
Undefined instruction
Address ZZZZZh
BRK instruction
Address match
Reserved area
Address break
Single step
(Reserved)
Overflow
Reset
−
−
−
1.5 Kbytes
2.5 Kbytes
2 Kbytes
Size
Internal RAM
Address 0XXXXh
00BFFh
00DFFh
009FFh
Page 14 of 740
3. Memory