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參數(shù)資料
| 型號： | M37643M8-XXXHP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80 |
| 文件頁數(shù)： | 114/120頁 |
| 文件大?。?/td> | 1253K |
| 代理商： | M37643M8-XXXHP |
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93
7643 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to
change.
Symbol
Table 22 Definition of each bit in status register (SRD)
Status Register (SRD)
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 (7016)
(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 (FF16) is input.
Also, the status register can be cleared by writing the clear status
register command (5016).
After reset, the status register is set to “8016”.
Table 22 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 (5016) and clear the status register.
Also, if any commands are not correct, both SR5 and SR4 are set
to “1”.
SR7 (bit7)
SR6 (bit6)
SR5 (bit5)
SR4 (bit4)
SR3 (bit3)
SR2 (bit2)
SR1 (bit1)
SR0 (bit0)
Definition
“1”
“0”
Status name
Sequencer status
Reserved
Erase status
Program status
Reserved
Ready
-
Terminated in error
-
Busy
-
Terminated normally
-
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M3764A-12 | 制造商:OK International 功能描述: |
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| M37702E2LGP | 制造商:Mitsubishi Electric 功能描述: |
| M37702E4BFS | 制造商:Renesas Electronics Corporation 功能描述:EPROM MCU/8BIT CMOS EMULATION CHIP - Bulk |
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