MBM29F400TC-55/-70/-90/MBM29F400BC-55/-70/-90
Table 2 MBM29F400TC/BC User Bus Operation (BYTE = VIH)
DQ0 to
DQ15
Operation
CE
OE
WE
A0
A1
A6
A9
RESET
Auto-Select Manufacturer Code (1)
Auto-Select Device Code (1)
Read (3)
L
L
L
H
L
L
L
L
X
X
L
L
H
H
H
X
H
L
L
H
A0
X
L
L
L
L
VID
VID
A9
X
Code
Code
DOUT
H
H
H
H
H
H
H
H
VID
L
L
A1
X
A6
X
X
A6
L
Standby
X
H
H
VID
L
HIGH-Z
HIGH-Z
DIN
Output Disable
X
X
X
Write
A0
X
A1
X
A9
VID
VID
X
Enable Sector Protection (2)
Verify Sector Protection (2)
Temporary Sector Unprotection
Reset (Hardware)/Standby
X
H
X
X
L
H
X
L
Code
X
X
X
X
X
X
X
X
X
HIGH-Z
Table 3 MBM29F400TC/BC User Bus Operation (BYTE = VIL)
DQ15
Operation
CE OE WE
A0
A1
A6
A9 DQ0 to DQ7 RESET
/A-1
Auto-Select Manufacturer Code (1)
Auto-Select Device Code (1)
Read (3)
L
L
L
H
L
L
L
L
X
X
L
L
H
H
H
X
H
L
L
L
H
A0
X
L
L
L
L
VID
VID
A9
X
Code
Code
DOUT
H
H
H
H
H
H
H
H
VID
L
L
L
A-1
X
A1
X
A6
X
X
A6
L
Standby
X
H
H
VID
L
HIGH-Z
HIGH-Z
DIN
Output Disable
X
X
X
X
Write
A-1
L
A0
X
A1
X
A9
VID
VID
X
Enable Sector Protection (2)
Verify Sector Protection (2)
Temporary Sector Unprotection
Reset (Hardware)/Standby
X
H
X
X
L
L
H
X
L
Code
X
X
X
X
X
X
X
X
X
X
X
HIGH-Z
Legend: L = VIL, H = VIH, X = VIL or VIH,
= 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 VIL if OE is VIL, OE at VIH initiates the write operations.
8
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