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參數(shù)資料
| 型號(hào)： | R5F64342JFD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 60 MHz, MICROCONTROLLER, PQFP144 |
| 封裝： | 20 X 20 MM, 0.50 MM PITCH, PLASTIC, LQFP-144 |
| 文件頁(yè)數(shù)： | 21/110頁(yè) |
| 文件大?。?/td> | 982K |
| 代理商： | R5F64342JFD |
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REJ03B0244-0030 Rev.0.30 Feb 14, 2008
Page 18 of 108
Under development
Preliminary Specification
Specifications in this preliminary version are subject to change.
R32C/134 Group
3. Memory
3.
Memory
Figure 3.1 shows a memory mapping of the R32C/134 Group.
The R32C/134 Group provides 4-Gbyte address space from 00000000h to FFFFFFFFh.
The internal ROM is allocated from address FFFFFFFFh to lower. For example, a 512-Kbyte internal ROM
is addressed from FFF80000h to FFFFFFFFh.
The fixed interrupt vectors are allocated from address FFFFFFDCh to FFFFFFFFh in which the starting
address of each interrupt handler is stored.
The internal RAM is allocated from address 00000400h to higher. For example, a 32-Kbyte internal RAM is
addressed from 00000400h to 000083FFh. Besides being used for data storage, the internal RAM functions
as stack(s) for a subroutine and/or an interrupt handler.
Special Function Registers (SFR), consisting of control registers for peripheral functions, are allocated from
address 00000000h to 000003FFh and from 00040000h to 0004FFFFh. Any blank spaces within the SFR
are reserved. No access is allowed.
Figure 3.1
Memory Mapping
Internal RAM
SFR1
SFR2
Internal ROM
000 00000 h
FFFFFFFFh
Reset
NMI
Reserved
Watchdog timer (2)
Reserved
BRK instruction
Overflow
Undefined instruction
FFFFFFFFh
FFFFFFDCh
Notes:
1. Additional two 4-Kbyte spaces (blocks A and B) for storing data are provided in the flash memory version.
2. The watchdog timer interrupt shares the vector table with the oscillation stop detection interrupt.
YYYYYYYYh
0000 0400h
XXXXXXXXh
Reserved
0004 0000h
Internal ROM
(Data space) (1)
0006 0000h
0006 2000h
Reserved
000 50000 h
Reserved
Internal RAM
Capacity
XXXXXXXXh
32 K bytes
00008400h
24 K bytes
00006400h
Internal ROM
Capacity
YYYYYYYYh
256 K bytes FFFC0000h
384 K bytes FFFA0000h
512 K bytes
FFF80000h
20 K bytes
00005400h
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