MX29F022TQC-70 View Datasheet(PDF) - Macronix International
Part Name
Description
MFG CO.
'MX29F022TQC-70' PDF : 46 Pages View PDF
MX29F022/022NT/B
TIMING WAVEFORM FOR CHIP PROTECTION/UNPROTECTION FOR SYSTEM WITHOUT 12V
6th command
cycle : 555H
A1 X
'0'
7th command
cycle
A6 X
'1'
X
(Note 2)
'0'
A6,A9 & sector address are don't care
during toggle bit polling period, or just
be kept valid value in read window.
X=Don't care
Protected Verify
'1'
Reset to Read Mode
X
tACC
X
A9 X
'0'
XX
X
OE
tAS tAH
WE
CE
tCEP
(Q0-Q7)
20H
tOE
A6,A9 and Sector Addr. should be latched on the falling e
dge of WE or CE , ehich occurs last, for WSM reference
Toggle Bit Polling
tCE
X(2)
Dout Dout
Dout
Dout
F0H
Note1: Don't care except F0H.
Note2: Protection:7th command cycle A6 goes low.
Unprotection: 7th command cycle A6 goes high.
Note3: Protection verify:01H
Un-protection verify:00H
Note4: Must issue "unlock for chip protection/unprotection" command before chip protection/un-protection for a
system without 12V provided.
P/N:PM0556
REV. 1.3, NOV. 11, 2002
35
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