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參數(shù)資料
| 型號(hào)： | M37641M8 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機(jī) |
| 文件頁數(shù)： | 120/149頁 |
| 文件大?。?/td> | 1997K |
| 代理商： | M37641M8 |
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120
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
Status Register
The status register indicates status such as whether an erase op-
eration or a program ended successfully or in error. It can be read
under the following conditions.
(1) In the read array mode when the read status register command
(70
16
) is written and the block address is subsequently read.
(2) When reading the User ROM area, in the period from when the
program write or block erase starts to when the read array
command (FF
16
) is written.
The status register is cleared in the following situations.
(1) By writing the clear status register command (50
16
)
(2) In the deep power down mode
(3) In the power supply off state
Table 31 lists the definition of each status register bit. When power
is turned on or returning from the deep power down mode, the sta-
tus register becomes
“
80
16
”
.
G
Sequencer Status (SR7)
The sequencer status indicates the operating status of the flash
memory. This bit is set to
“
0
”
(busy) during write or erase operation
and is set to
“
1
”
(ready) when these operations end.
After power-on, the sequencer status is set to
“
1
”
(ready).
G
Erase Status (SR5)
The erase status indicates the operating status of erase operation.
If an erase error occurs, it is set to
“
1
”
. When the erase status is
cleared, it is set to
“
0
”
.
G
Program Status (SR4)
The program status indicates the operating status of write opera-
tion. When a write error occurs, it is set to
“
1
”
.
The program status is set to
“
0
”
when it is cleared.
Table 31 Status register
Each bit of
SRD0 bits
SR7 (DB
7
)
SR6 (DB
6
)
SR5 (DB
5
)
SR4 (DB
4
)
SR3 (DB
3
)
SR2 (DB
2
)
SR1 (DB
1
)
SR0 (DB
0
)
Sequencer status
Reserved
Erase status
Program status
Reserved
Reserved
Reserved
Reserved
“
1
”
Ready
-
Ended in error
Ended in error
-
-
-
-
Status name
“
0
”
Busy
-
Ended successfully
Ended successfully
-
-
-
-
Definition
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| M37641M8-100FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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| M37641M8-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37641M8-XXXHP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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