MX29F200T/B
TABLE 2. MX29F200T/B BUS OPERATION
Pins
CE OE
WE A0
A1
L
A6
X
A9
Q0 ~ Q15
Mode
Read Silicon ID
L
L
L
L
H
H
L
VID(2)
VID(2)
C2H(Byte mode)
Manfacturer Code(1)
Read Silicon ID
Device Code(1)
Read
00C2H(Word mode)
H
L
X
51H/57H(Byte mode)
2251H/2257H(Word mode)
L
H
L
L
L
L
H
X
H
L
A0
X
A1
X
A6
X
A9
X
DOUT
Standby
X
H
H
HIGH Z
HIGH Z
DIN(3)
X
Output Disable
Write
X
X
X
X
A0
X
A1
X
A6
L
A9
VID(2)
Sector Protect with 12V
system(6)
VID(2) L
Chip Unprotect with 12V
system(6)
L
L
L
L
L
VID(2) L
X
X
X
X
X
X
H
X
X
H
H
X
L
VID(2)
VID(2)
H
X
Verify Sector Protect
with 12V system
Sector Protect without 12V
system (6)
L
H
L
Code(5)
H
H
L
X
Chip Unprotect without 12V
system (6)
L
H
X
H
X
Verify Sector Protect/
Unprotect without 12V
system (7)
H
H
Code(5)
Reset
X
X
X
X
X
X
X
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/0000Hmeansunprotected.
Code=01H/0001H means protected.
A16~A12=Sector address for sector protect.
6. Refer to sector protect/unprotect algorithm and waveform.
Must issue "unlock for sector protect/unprotect" command before "sector protect/unprotect without 12V system"
command.
7. The "verify sector protect/unprotect without 12V sysytem" is only following "Sector protect/unprotect without 12V
system" command.
P/N:PM0549
REV. 1.3 , DEC. 24, 2001
7
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