MBM29F400TC
-55/-70/-90
/MBM29F400BC
-55/-70/-90
Table 2
Operation
Auto-Select Manufacturer Code (1)
Auto-Select Device Code (1)
Read (3)
Standby
Output Disable
Write
Enable Sector Protection (2)
Verify Sector Protection (2)
Temporary Sector Unprotection
Reset (Hardware)/Standby
MBM29F400TC/BC User Bus Operation (BYTE = V
IH
)
CE
L
L
L
H
L
L
L
L
X
X
OE
L
L
L
X
H
H
V
ID
L
X
X
H
X
X
WE
H
H
H
X
H
L
A
0
L
H
A
0
X
X
A
0
X
L
X
X
A
1
L
L
A
1
X
X
A
1
X
H
X
X
A
6
L
L
A
6
X
X
A
6
L
L
X
X
A
9
V
ID
V
ID
A
9
X
X
A
9
V
ID
V
ID
X
X
DQ
0
to
DQ
15
Code
Code
D
OUT
HIGH-Z
HIGH-Z
D
IN
X
Code
X
HIGH-Z
RESET
H
H
H
H
H
H
H
H
V
ID
L
Table 3
Operation
MBM29F400TC/BC User Bus Operation (BYTE = V
IL
)
CE
L
L
L
H
L
L
L
L
X
X
OE
L
L
L
X
H
H
V
ID
L
X
X
H
X
X
15
WE DQ
-1
/A
A
0
L
H
A
0
X
X
A
0
X
L
X
X
A
1
L
L
A
1
X
X
A
1
X
H
X
X
A
6
L
L
A
6
X
X
A
6
L
L
X
X
A
9
V
ID
V
ID
A
9
X
X
A
9
V
ID
V
ID
X
X
DQ
0
to DQ
7
RESET
Code
Code
D
OUT
HIGH-Z
HIGH-Z
D
IN
X
Code
X
HIGH-Z
H
H
H
H
H
H
H
H
V
ID
L
Auto-Select Manufacturer Code (1)
Auto-Select Device Code (1)
Read (3)
Standby
Output Disable
Write
Enable Sector Protection (2)
Verify Sector Protection (2)
Temporary Sector Unprotection
Reset (Hardware)/Standby
Legend:
L = V
IL
, H = V
IH
, X = V
IL
or V
IH
,
H
H
H
X
H
L
L
L
A
-1
X
X
A
-1
L
L
X
X
= Pulse input. See DC Characteristics for voltage levels.
Notes:
1. Manufacturer and device codes may also be accessed via a command register write sequence. Refer
to Table 7.
2. Refer to the section on Sector Protection.
3. WE can be V
IL
if OE is V
IL
, OE at V
IH
initiates the write operations.
8
FUJITSU [ FUJITSU COMPONENT LIMITED. ]
