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參數(shù)資料
| 型號： | M37641M8-XXXFP |
| 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 |
| 文件頁數(shù)： | 109/149頁 |
| 文件大小： | 1997K |
| 代理商： | M37641M8-XXXFP |
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109
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
Table 27 Definition of each bit in status register
Each bit of
SRD0 bits
SR7 (bit7)
SR6 (bit6)
SR5 (bit5)
SR4 (bit4)
SR3 (bit3)
SR2 (bit2)
SR1 (bit1)
SR0 (bit0)
Status Register
The status register shows the operating status of the flash
memory and whether erase operations and programs ended suc-
cessfully or in error. It can be read in the following ways:
(1) By reading an arbitrary address from the User ROM area after
writing the read status register command (70
16
)
(2) By reading an arbitrary address from the User ROM area in the
period from when the program starts or erase operation starts
to when the read array command (FF
16
) is input.
Also, the status register can be cleared by writing the clear status
register command (50
16
).
After reset, the status register is set to
“
80
16
”
.
Table 27 shows the status register. Each bit in this register is ex-
plained below.
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
”
when these operations ends.
After power-on, the sequencer status is set to
“
1
”
(ready).
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
”
.
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.
If
“
1
”
is written for any of the SR5 and SR4 bits, the program,
erase all blocks, and block erase commands are not accepted.
Before executing these commands, execute the clear status regis-
ter command (50
16
) and clear the status register.
Also, if any commands are not correct, both SR5 and SR4 are set
to
“
1
”
.
Definition
“
1
”
“
0
”
Ready
-
Terminated in error
Terminated in error
-
-
-
-
Sequencer status
Reserved
Erase status
Program status
Reserved
Reserved
Reserved
Reserved
Status name
Busy
-
Terminated normally
Terminated normally
-
-
-
-
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M37641M8-XXXHP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M376420RS | 制造商:OKI 功能描述:3764-20 NOTES |
| M3764-20RS | 制造商:OKI 功能描述:3764-20 NOTES 制造商: 功能描述:Dynamic RAM, Page Mode, 64K x 1, 16 Pin, Plastic, DIP 制造商:OK International 功能描述:Dynamic RAM, Page Mode, 64K x 1, 16 Pin, Plastic, DIP |
| M3-7643A-S | 制造商:Harris Corporation 功能描述: |
| M37643F8E8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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