參數(shù)資料
型號: M30201
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述: 單片16位CMOS微機
文件頁數(shù): 137/159頁
文件大小: 2319K
代理商: M30201
Appendix Parallel I/O Mode
Peimnay
Unde
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
137
Read
only
Read/
Write
Read
Output disabled
Stand by
Write
Read
Output disabled
Stand by
Data output
Hi-Z
Hi-Z
Data output
Hi-Z
Hi-Z
Data input
V
IL
V
IL
V
IH
V
IL
V
IL
V
IH
V
IL
V
IL
V
IH
X
V
IL
V
IH
X
V
IH
V
IH
V
IH
X
V
IL
V
IL
V
IL
V
IH
V
IH
V
IH
V
IH
V
IH
V
IH
X
Mode
Pin name
CE
OE
WE
V
RFY
D
0
to D
7
Note: X can be V
IL
or V
IH
.
V
PPH
V
PPH
V
PPH
V
PP
V
PPH
V
PPH
V
PPH
V
PPH
V
IL
User ROM and Boot ROM Areas
In parallel I/O mode, the user ROM and boot ROM areas shown in Figure CC-1 can be rewritten.
In the boot ROM area, an erase block operation is applied to only one 4 K byte block. The boot ROM area
has had a standard serial I/O mode control program stored in it when shipped from the Mitsubishi factory.
Therefore, using the device in standard serial input/output mode, the user does not need to write to the
boot ROM area.
Functional Outline (Parallel I/O Mode)
In parallel I/O mode, bus operation modes—Read, Output Disable, Standby, and Write—are selected by
_____
_____
_____
the status of the CE, OE, WE, V
RFY
, and CNV
SS
input pins.
The contents of erase, program, and other operations are selected by writing a software command. The
data in memory can only be read out by a read after software command input.
Program and erase operations are controlled using software commands.
Table CC-3. Relationship between control signals and bus operation modes
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