參數資料
型號: R5F6451MJFD
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP144
封裝: 20 X 20 MM, 0.50 MM PITCH, PLASTIC, LQFP-144
文件頁數: 33/121頁
文件大?。?/td> 813K
代理商: R5F6451MJFD
REJ03B0230-0110
Rev.1.10
Page 19 of 116
Sep 06, 2010
R32C/151 Group
3. Memory
3.
Memory
Figure 3.1 shows the memory map of the R32C/151 Group.
The R32C/151 Group provides a 4-Gbyte address space from 00000000h to FFFFFFFFh.
The internal ROM is mapped to the end of the memory map with the ending address fixed at FFFFFFFFh.
Therefore, the 1-Mbyte internal ROM is mapped from FFF00000h to FFFFFFFFh.
The fixed interrupt vector table which contains each start address of interrupt handlers is mapped from
FFFFFFDCh to FFFFFFFFh.
The internal RAM is mapped to the beginning of the memory map with the starting address fixed at
00000400h. Therefore, the 48-Kbyte internal RAM is mapped from 00000400h to 0000C3FFh. Besides
being used for data storage, the internal RAM functions as a stack(s) for subroutines and/or interrupt
handlers.
Special Function Registers (SFRs), which are control registers for peripheral functions, are mapped from
00000000h to 000003FFh, and from 00040000h to 0004FFFFh. Unoccupied SFR locations are reserved.
No access is allowed.
Figure 3.1
Memory Map
Internal RAM
SFR1
SFR2
Internal ROM
00000000h
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 oscillator stop detection interrupt and low
voltage detection interrupt.
YYYYYYYYh
00000400h
0000C400h
Reserved
00040000h
Internal ROM
(Data space) (1)
00060000h
00062000h
Reserved
00050000h
Reserved
Internal ROM
Capacity
YYYYYYYYh
768 Kbytes FFF40000h
1 Mbyte
FFF00000h
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