MX29LV320AT/B
Table 2. BUS OPERATION--1
Operation
CE OE WE RESET WP/ACC
Addresses
(Note 2)
AIN
Q0~Q7
Q8 ~ Q15
Byte=VIH
Byte=VIL
Q8-A14
Read
L
L
H
H
L/H
DOUT
DOUT
=High-Z
Q15=A-1
Write (Note 1)
Accelerate
Program
L
L
H
H
L
L
H
H
Note 3
VHH
AIN
AIN
DIN
DIN
DIN
DIN
Standby
VCC ± X
X
VCC ±
0.3V
H
H
X
High-Z
High-Z
High-Z
0.3V
Output Disable
Reset
L
X
L
H
X
H
H
X
L
L/H
L/H
L/H
X
X
High-Z
High-Z
High-Z
High-Z
X
High-Z
High-Z
X
L
Sector Group
Protect (Note 2)
Chip Unprotect
(Note 2)
VID
Sector Addresses, DIN, DOUT
A6=L, A1=H, A0=L
L
H
X
L
VID
VID
Note 3 Sector Addresses, DIN, DOUT
A6=H, A1=H, A0=L
X
X
Temporary Sector
Group Unprotect
X
X
Note 3
AIN
DIN
DIN
High-Z
Legend:
L=Logic LOW=VIL, H=Logic High=VIH, VID=12.0±0.5V, VHH=11.5-12.5V, X=Don't Care, AIN=Address IN, DIN=Data IN,
DOUT=Data OUT
Notes:
1. When the WP/ACC pin is at VHH, the device enters the accelerated program mode. See "Accelerated Program
Operations" for more information.
2.The sector group protect and chip unprotect functions may also be implemented via programming equipment. See
the "Sector Group Protection and Chip Unprotection" section.
3.If WP/ACC=VIL, the two outermost boot sectors remain protected. If WP/ACC=VIH, the two outermost boot sector
protection depends on whether they were last protected or unprotected using the method described in "Sector/
Sector Block Protection and Unprotection". If WP/ACC=VHH, all sectors will be unprotected.
4.DIN or Dout as required by command sequence, data polling, or sector protection algorithm.
5.Address are A20:A0 in word mode (BYTE=VIH), A20:A-1 in byte mode (BYTE=VIL).
P/N:PM1008
REV. 1.1, MAY 28, 2004
9
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