參數(shù)資料
型號： R5F2136CCNFP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP64
封裝： 10 X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64
文件頁數(shù)： 15/62頁
文件大?。?/td> 581K
代理商： R5F2136CCNFP
R8C/2A Group, R8C/2B Group
3. Memory
Rev.2.10
Nov 26, 2007
Page 20 of 60
REJ03B0182-0210
3.
Memory
3.1
R8C/2A Group
Figure 3.1 is a Memory Map of R8C/2A Group. The R8C/2A group has 1 Mbyte of address space from addresses
00000h to FFFFFh.
The internal 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. They store the starting address of each
interrupt routine.
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 storing data but also
for calling subroutines and as stacks when interrupt requests are acknowledged.
Special function registers (SFRs) are allocated addresses 00000h to 002FFh. The peripheral function control
registers are allocated here. All addresses within the SFR, which have nothing allocated are reserved for future use
and cannot be accessed by users.
Figure 3.1
Memory Map of R8C/2A Group
Undefined instruction
Overflow
BRK instruction
Address match
Single step
Watchdog timer, oscillation stop detection, voltage monitor
(Reserved)
Reset
Internal ROM
Internal RAM
Size
Address 0YYYYh
48 Kbytes
64 Kbytes
96 Kbytes
128 Kbytes
13FFFh
1BFFFh
23FFFh
00DFFh
00FFFh
011FFh
00400h
002FFh
00000h
Internal RAM
SFR
(Refer to 4. Special
Function Registers
(SFRs))
0FFFFh
0FFDCh
Address 0XXXXh
NOTE:
1. The blank regions are reserved. Do not access locations in these regions.
Address ZZZZZh
Size
2.5 Kbytes
3 Kbytes
7 Kbytes
7.5 Kbytes
04000h
FFFFFh
0FFFFh
0YYYYh
Internal ROM
(program ROM)
Expanded area
Internal ROM
(program ROM)
ZZZZZh
0XXXXh
03000h
Internal RAM
0WWWWh
03DFFh
03FFFh
Address 0WWWWh
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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