MX29F022 查看數據表（PDF） - Macronix International
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MX29F022 Datasheet PDF : 46 Pages
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MX29F022/022NT/B
TABLE 2. MX29F022T/B BUS OPERATION
Pins
CE OE
WE A0 A1
Mode
Read Silicon ID
L
L
H
L
L
Manufacturer Code(1)
Read Silicon ID
L
L
H
H
L
Device Code(1)
Read
L
L
H
A0 A1
Standby
H
X
X
X
X
Output Disable
L
H
H
X
X
Write
L
H
L
A0 A1
Chip Protect with 12V
system (6)
L
VID(2) L
X
X
Chip Unprotect with 12V
system (6)
L
VID(2) L
X
X
Verify chip Protect
L
L
H
X
H
with 12V system
Chip Protect without 12V
L
H
L
X
X
system (6)
Chip Unprotect without 12V
L
H
L
X
X
system (6)
Verify Chip Protect/Unprotect L
L
H
X
H
without 12V system (7)
Reset
X
X
X
X
X
A6 A9
X
VID(2)
X
VID(2)
A6 A9
X
X
X
X
A6 A9
L
VID(2)
H
VID(2)
X
VID(2)
L
H
H
H
X
H
X
X
Q0~Q7
C2H
36H/37H
DOUT
HIGH Z
HIGH Z
DIN(3)
X
X
Code (5)
X
X
Code(5)
HIGH Z
NOTES:
1. Manufacturer and device codes may also be accessed via a command register write sequence. Refer to Table 1.
2. VID is the Silicon-ID-Read high voltage, 11.5V to 12.5V.
3. Refer to Table 1 for valid Data-In during a write operation.
4. X can be VIL or VIH.
5. Code=00H means unprotected.
Code=01H means protected.
6. Refer to chip protect/unprotect algorithm and waveform.
Must issue "unlock for chip protect/unprotect" command before "chip protect/unprotect without 12V system"
command.
7. The "verify chip protect/unprotect without 12V system" is only following "chip protect/unprotect without 12V sys-
tem"
command.
P/N:PM0556
REV. 1.3, NOV. 11, 2002
6
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