MBM29LV650UE/651UE-
90/12
s
DEVICE BUS OPERATION
Table2 MBM29LV650UE/651UE User Bus Operations
Operation
Auto-Select Manufacture Code (1)
Auto-Select Device Code (1)
Read (3)
Standby
Output Disable
Write (Program/Erase)
Enable Sector Group Protection (2), (4)
Verify Sector Group Protection (2), (4)
Temporary Sector Group Unprotection (5)
Reset (Hardware)/Standby
Outermost Sector Write Protection
Legend: L = V
IL
, H = V
IH
, X = V
IL
or V
IH
.
CE
L
L
L
H
L
L
L
L
X
X
X
OE
L
L
L
X
H
H
V
ID
L
X
X
X
H
X
X
X
WE
H
H
H
X
H
L
A
0
L
H
A
0
X
X
A
0
L
L
X
X
X
A
1
L
L
A
1
X
X
A
1
H
H
X
X
X
A
6
L
L
A
6
X
X
A
6
L
L
X
X
X
A
9
V
ID
V
ID
A
9
X
X
A
9
V
ID
V
ID
X
X
X
DQ
0
to DQ
15
RESET WP
Code
Code
D
OUT
HIGH-Z
HIGH-Z
D
IN
X
Code
X
HIGH-Z
X
H
H
H
H
H
H
H
H
V
ID
L
X
X
X
X
X
X
X
X
X
X
X
L
= Pulse input. See DC Characteristics for voltage levels.
Notes: 1. Manufacturer and device codes may also be accessed via a command register write sequence. See
Table 3.
2. Refer to the section on Sector Group Protection.
3. WE can be V
IL
if OE is V
IL
, OE at V
IH
initiates the write operations.
4. V
CC
= 3.3 V ±10%
5. It is also used for the extended sector group protection.
8
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