MX29LV400T/B
mand through the command register without requiring
VID, as shown in table4.
To verify whether or not sector being protected, the sec-
tor address must appear on the appropriate highest or-
der address bit (see Table 1 and Table 2). The rest of
address bits, as shown in table3, are don't care. Once
all necessary bits have been set as required, the pro-
gramming equipment may read the corresponding iden-
tifier code on Q7~Q0.
TABLE 3. MX29LV400T/B AUTOSELECT MODE OPERATION
A17 A11 A9 A8 A6 A5 A1 A0
Description
Mode CE
OE WE RESET
|
|
|
A7
X
|
A2
X
Q15~Q0
A12 A10
Read Silicon ID
Manfacturer Code
Read Silicon ID
(Top Boot Block)
Device ID
L
L
H
H
X
X
VID
L
L
L
C2H
Word
Byte
Word
Byte
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
X
X
X
X
X
X
X
VID
VID
VID
VID
X
X
X
X
L
L
L
L
X
X
X
X
L
L
L
L
H
H
H
H
22B9H
XXB9H
22BAH
(Bottom Boot Block)
XXBAH
XX01H
Sector Protection
Verification
L
L
H
H
SA
X
VID
X
L
X
H
L
(protected)
XX00H
(unprotected)
NOTE:SA=Sector Address, X=Don't Care, L=Logic Low, H=Logic High
P/N:PM0710
REV. 1.4, NOV. 23, 2001
6
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