MF832M1-GMCAVXX Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC
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MF832M1-GMCAVXX Datasheet PDF : 22 Pages
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Write protect mode
The card has a write protect switch on the opposite
edge to the connector edge. When it is switched on,
the card will be placed into a write protect mode,
where data can be read from the card but it cannot
be written to it. The WP output pin is set to a high
level when the card is in write protect mode and VCC
MITSUBISHI MEMORY CARD
FLASH MEMORY CARDS
is applied. When the card is not in write protect
mode the WP output pin is set to a low level when
VCC is applied. By reading the state of the WP
output the host system can easily check whether the
card is in write protect mode or not.
FUNCTION TABLE (COMMON MEMORY)
Mode
REG# CE2# CE1# OE# WE# A 0
I/O
(D15 to D8)
Standby
H
H
H
X
X X High-Z
Read A(16-bit)
H
L
L
L
H X Odd byte data out
Read B(8-bit)
H
H
L
L
H L High-Z
H
H
L
L
H H High-Z
Read C(8-bit)
H
L
H
L
H X Odd byte data out
Write A(16-bit)
H
L
L
H
Command or odd byte data in
LX
Write B(8-bit)
High-Z
H
H
L
H
L
L
High-Z
H
H
L
H
LH
Write C(8-bit)
Command or odd byte data in
H
L
H
H
LX
Output disable
H
X
X
H
H X High-Z
Note 1 : H=VIH, L=VIL, X=VIH or VIL, High-Z= High-impedance
To operate refer to the command definition, algorithms and so on.
I/O
(D7 to D0)
High-Z
Even byte data out
Even byte data out
odd byte data out
High-Z
Command or even byte data in
Command or even byte data in
Command or odd byte data in
High-Z
High-Z
FUNCTION TABLE (ATTRIBUTE MEMORY )
GM series
Mode
REG# CE2# CE1# OE# WE# A 0
Standby
L
H
H
X
X
X
Read A(16-bit)
L
L
L
L
H
X
Read B
L
H
L
L
H
L
(8-bit)
L
H
L
L
H
H
Read C(8-bit)
L
L
H
L
H
X
Write A(16-bit) L
L
L
H
L
X
Write B
L
H
L
H
L
L
(8-bit)
L
H
L
H
L
L
Write C(8-bit)
L
L
H
H
L
X
Output disable
L
X
X
H
H
X
I/O
(D15 to D8)
High-Z
Data out(not valid)
High-Z
High-Z
Data out(not valid)
Odd byte data in (not valid)
High-Z
High-Z
Odd byte data in (not valid)
High-Z
GN series
Mode
REG# CE2# CE1# OE# WE# A 0
I/O
(D15 to D8)
Standby
L
H
H
X
X
X High-Z
Read A(16-bit)
L
L
L
L
H
X Data out(not valid)
Read B
L
H
L
L
H
L High-Z
(8-bit)
L
H
L
L
H
H High-Z
Read C(8-bit)
L
L
H
L
H
X Data out(not valid)
Output disable
L
X
X
H
H
X High-Z
Note 2 : H=VIH, L=VIL, X=VIH or VIL, High-Z= High-impedance
I/O
(D7 to D0)
High-Z
Even byte data out
Even byte data out
Data out(not valid)
High-Z
Even byte data in
Even byte data in
Odd byte data in (not valid)
High-Z
High-Z
I/O
(D7 to D0)
High-Z
Data out (FFh)
Data out (FFh)
Data out(not valid)
High-Z
High-Z
MITSUBISHI
ELECTRIC
4/22
Feb.1999 Rev2.0
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