參數(shù)資料
型號(hào): MB90F823PFM
廠商: Electronic Theatre Controls, Inc.
英文描述: Scan Test Devices With Octal Bus Transceivers 24-CDIP -55 to 125
中文描述: 16位微控制器專有
文件頁(yè)數(shù): 19/98頁(yè)
文件大?。?/td> 1415K
代理商: MB90F823PFM
MB90820 Series
19
I
MEMORY MAP
Note: The ROM data of bank FF is reflected to the upper address of bank 00, realizing effective use of the C
compiler small model. The lower 16-bit is assigned to the same address, enabling reference of the table on
the ROM without stating “far”. For example, if an attempt has been made to access 00C000
H
, the contents
of the ROM at FFC000
H
are accessed actually. Since the ROM area of the FF bank exceeds 32K bytes, the
whole area cannot be reflected in the image for the 00 bank. The ROM data at FF8000
H
to FFFFFF
H
looks,
therefore, as if it were the image for 008000
H
to 00FFFF
H
. Thus, it is recommended that the ROM data table
be stored in the area of FF8000
H
to FFFFFF
H
.
FFFFFF
H
010000
H
00FFFF
H
000100
H
0000FF
H
0000F0
H
0000EF
H
000000
H
Address #1 - 1
H
Address #1
Address #2 - 1
H
Address #2
Address #3
Address #3 + 1
H
ROM area
ROM area*
(FF bank image)
RAM
area
Register
Peripheral area
: Internal access memory
: Access not allowed
Parts no.
Address#1
Address#2
Address#3
MB90822
FF0000
H
008000
H
0010FF
H
MB90F822
FF0000
H
008000
H
0010FF
H
MB90F823
FE0000
H
008000
H
0010FF
H
MB90V820
(FE0000
H
)
008000
H
0040FF
H
* : In Single chip mode, the mirror function is supported.
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