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參數(shù)資料
| 型號(hào)： | MB90495G |
| 廠商： | Fujitsu Limited |
| 英文描述： | 16-bit Proprietary Microcontroller CMOS |
| 中文描述： | 16位微控制器專有的CMOS |
| 文件頁(yè)數(shù)： | 19/92頁(yè) |
| 文件大?。?/td> | 450K |
| 代理商： | MB90495G |
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MB90495G Series
19
I
MEMORY MAP
The memory access modes of the MB90495G Series can be set to single chip mode, internal ROM - external
bus mode, and external ROM - external bus mode.
1.
Memory Allocation of the MB90495G
The MB90495G Series has 24-bit internal address bus and 24-bit external address bus output, enabling it to
access up to 16 Mbytes of external access memory. The enable/disable time of the ROM mirror function is shown
graphically in the memory map.
Memory Map
2.
Note : When the internal ROM is operational, the ROM data in the upper address of bank 00 of the F
2
MC-16LX is
visible in an image. This is called the ROM mirror function, and takes advantage of the small C compiler model.
With the F
2
MC-16LX, the lower 16-bit address of bank FF and the lower 16-bit address of bank 00 are set
identical to one another. This allows the ROM-internal table to be referenced without specifying a far pointer.
For example, say the address “00C000
H
” is accessed. In actuality, the “FFC000
H
” address inside ROM will
be accessed. However, as the ROM space in bank FF exceeds 48 Kbytes, the entire space cannot be viewed
on bank 00’s image. And so, since “FF4000
H
” to “FFFFFF
H
” ROM data will be visible on the “004000
H
” to
“00FFFF
H
” image, save the ROM data table in the “FF4000
H
” to “FFFFFF
H
” space.
Address #3
000000
H
0000C0
H
000100
H
003900
H
010000
H
FFFFFF
H
Single chip mode
(ROM mirror function available)
Periphery
Periphery
Periphery
RAM space
Register
RAM space
Register
RAM space
Register
Extention
IO space
ROM space
(image of
bank FF)
Extention
IO space
ROM space
(image of
bank FF)
Extention
IO space
ROM space
ROM space
Internal ROM
External bus mode
External ROM
External bus mode
Address #1
002000
H
Address #2
Internal access memory
External access memory
Access prohibited
003800
H
* : Addresses #1 and #3 are product-specific.
Product
Address #1
*
Address #2
Address #3
*
MB90V495G
001900
H
004000
H
(FC0000
H
)
MB90F497G
000900
H
004000
H
FF0000
H
MB90497G
000900
H
004000
H
FF0000
H
MB90F498G
000900
H
004000
H
FE0000
H
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB90495G_09 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90497 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller CMOS |
| MB90497G | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90497GPF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90497GPFM | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller CMOS |
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