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MF82M1-GMCAVXX Datasheet(PDF) 6 Page - Mitsubishi Electric Semiconductor

Part No. MF82M1-GMCAVXX
Description  8/16-bit Data Bus Flash Memory Card
Download  22 Pages
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Maker  MITSUBISHI [Mitsubishi Electric Semiconductor]
Homepage  http://www.mitsubishichips.com
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MF82M1-GMCAVXX Datasheet(HTML) 6 Page - Mitsubishi Electric Semiconductor

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MITSUBISHI MEMORY CARD
FLASH MEMORY CARDS
MITSUBISHI
ELECTRIC
6/22
Feb.1999 Rev2.0
Erase Suspend/Erase Resume
The erase suspend command B0h (B0B0h for 16
bit operation) is a command to generate erase
interruption and to read data from another block
of selected memory zone. By writing in the
control register erase resume command D0h
(D0D0h for 16 bit operation), the memory block will
continue the erase operation.
These commands must be executed in erase
algorithm.
(For details please refer to the algorithm)
Read Status Register
The Read status register is a command to read the
status register ’ s data and to make sure programme
or erase operations complete successfully. The data
of status register can be read after writing 70h
(7070h for 16 bit operation) in the control register.
The register ’ s read data is latched on the falling
edge of OE#. At programme or erase, the status
register ’ s data must be read to verify the results.
Clear Status Register
The clear status register command will clear data of
status register. It is applied when 50h (5050h for 16
bit operation) is written to the control
register. If an error occurred during programme or
erase, the status register must be cleared before
retrying programme or erase.
Read Device Identifier Codes
The read device identifier codes command is
implemented by writing 90h (9090h for 16 bit
operation) to the command register. After writing
the command, manufacturer code can be read at the
address of 000000h of the zone and device code can
be read at the address 000002h of the zone. Each
card uses the same type of memory throughout and
each memory zone will respond the same code.
(Do not apply high voltage to A10 pin in order to try
and read the device identifier codes as this will
result in the card being destroyed.)
STATUS REGISTER
When operating programme or erase, it is necessary
to read status register data and to transact these bit.
Each memory IC used in this
card has internal status register to make sure
programme or erase operations complete
successfully.
7 (15) BIT
6 (14) BIT
5 (13) BIT
4 (12) BIT
3 (11) BIT
2 (10) BIT
1,0 (9,8) BIT
Programme/
Erase Status Bit
Erase
Suspend Bit
Erase Error
Bit
Programme
Error Bit
Vcc Error
Bit
Programme
Suspend Bit
Reserved
Note 4: ( ) ; for 16 bit operation
Bit ; Field name
Bit ; Field name
7(15) BIT ; Programme/Erase Status Bit
6(14) BIT ; Erase Suspend Bit
0=Busy (in programming/erasing) 1=Ready
1=Erase Suspended
5(13) BIT ; Erase Error Bit
4(12) BIT ; Programme Error Bit
1=Erase Error
1=Programme Error
3(11) BIT ; Vcc Error
2(10) BIT ; Programme Suspend Bit
1=Error of voltage at Vcc
1=Programme Suspended
1,0(9,8) BIT ; Reserved for future


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