參數(shù)資料
型號(hào)： MB90980
廠商： Fujitsu Limited
英文描述： 16-bit Proprietary Microcontroller
中文描述： 16位微控制器專有
文件頁(yè)數(shù)： 15/48頁(yè)
文件大小： 321K
代理商： MB90980
MB90980 Series
15
■
MEMORY MAP
*1 : No memory cells from FC0000
H
to FC7FFF
H
and FE0000
H
to FE7FFF
H
.
*2 : No memory cells from FE0000
H
to FEFFFF
H
. The upper part of the 00 bank is set up to mirror the image of
FF bank ROM, to enable efficient use of small model C compilers. Because the lower 16-bit address of the FF
bank and the lower 16-bit address of the 00 bank is the same, enabling reference to tables in ROM without
the “far” pointer declaration.
For example, in accessing address 00C000
H
it is actually the contents of ROM at FFC000
H
that are accessed.
If the MS bit in the ROMM register is set to “0”, the ROM area in the FF bank will exceed 48 Kbytes and it is
not possible to reflect the entire area in the image in the 00 bank. Therefore the image from FF4000
H
to FFFFFF
H
is reflected in the 00 bank and the area from FF0000
H
to FF3FFF
H
can be seen in the FF bank only.
Model
MB90F983
Address #1
FC0000
H
*
1
Address #2
Address #3
003100
H
004000
H
or 008000
H
,
selected by the MS bit in
the ROMM register
MB90982
FD0000
H
*
2
002900
H
FFFFFF
H
010000
H
000100
H
0000D0
H
000000
H
RAM
FC0000
H
Register
Address #1
Address #2
Address #3
ROM area
ROM area,
Image of FF bank
Peripheral
Internal access
No access
Single chip
相關(guān)PDF資料
PDF描述
MB90982 16-bit Proprietary Microcontroller
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