Memory; Sfr - Renesas M16C/62P Series Hardware Manual

M16C/62P Group (M16C/62P, M16C/62PT)
3.

Memory

Figure 3.1 is a Memory Map of the M16C/62P group. The address space extends the 1M bytes from address 00000h to
FFFFFh.
The internal ROM is allocated in a lower address direction beginning with address FFFFFh. For example, a 64-Kbyte
internal ROM is allocated to the addresses from F0000h to FFFFFh.
As for the flash memory version, 4-Kbyte space (block A) exists in 0F000h to 0FFFFh. 4-Kbyte space is mainly for
storing data. In addition to storing data, 4-Kbyte space also can store programs.
The fixed interrupt vector table is allocated to the addresses from FFFDCh to FFFFFh. Therefore, store the start
address of each interrupt routine here.
The internal RAM is allocated in an upper address direction beginning with address 00400h. For example, a 10-Kbyte
internal RAM is allocated to the addresses from 00400h to 02BFFh. In addition to storing data, the internal RAM also
stores the stack used when calling subroutines and when interrupts are generated.
The SRF is allocated to the addresses from 00000h to 003FFh. Peripheral function control registers are located here.
Of the SFR, any area which has no functions allocated is reserved for future use and cannot be used by users.
The special page vector table is allocated to the addresses from FFE00h to FFFDBh. This vector is used by the JMPS
or JSRS instruction. For details, refer to the M16C/60 and M16C/20 Series Software Manual.
In memory expansion and microprocessor modes, some areas are reserved for future use and cannot be used by users.
Use M16C/62P (80-pin version) and M16C/62PT in single-chip mode. The memory expansion and microprocessor
modes cannot be used
.
Internal RAM
Size Address XXXXXh
4 Kbytes 013FFh
5 Kbytes 017FFh
10 Kbytes 02BFFh
12 Kbytes 033FFh
16 Kbytes 043FFh
20 Kbytes 053FFh
24 Kbytes 063FFh
31 Kbytes 07FFFh
NOTES:
1. During memory expansion and microprocessor modes, can be used.
2. In memory expansion mode, can be used.
3. As for the flash memory version, 4-Kbyte space (block A) exists.
4. Shown here is a memory map for the case where the PM10 bit in the PM1 register is "1"
and the PM13 bit in the PM1 register is "1".
5. When using the masked ROM version, write nothing to internal ROM area.
Figure 3.1 Memory Map
Rev.2.41 Jan 10, 2006
REJ09B0185-0241
http://www.xinpian.net
00000h
00400h
XXXXXh
0F000h
0FFFFh
10000h
(3)
Internal ROM
Size Address YYYYYh
27000h
48 Kbytes
F4000h
64 Kbytes F0000h
28000h
96 Kbytes E8000h
128 Kbytes
E0000h
80000h
192 Kbytes
D0000h
256 Kbytes
C0000h YYYYYh
B0000h
320 Kbytes
A0000h
384 Kbytes
80000h
512 Kbytes
FFFFFh
Page 33 of 390
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SFR

Internal RAM
(1)
Reserved area
Internal ROM
(3)
(data area)
External area
Reserved area
External area
(2)
Reserved area
Internal ROM
(5)
(program area)
3. Memory
FFE00h
Special page
vector table
FFFDCh
Undefined instruction
Overflow
BRK instruction
Address match
Single step
Watchdog timer
DBC
NMI
Reset
FFFFFh
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