MBM29F400TC-55/-70-90/MBM29F400BC-55/-70-90
■ DEVICE BUS OPERATION
MBM29F400TC/BC User Bus Operation (BYTE = VIH)
DQ15 to
Operation
CE
OE
WE
A0
A1
A6
A9
RESET
DQ0
Code
Code
DOUT
High-Z
High-Z
DIN
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
H
H
H
H
H
H
H
H
VID
L
L
A1
X
A6
X
X
A6
L
Standby
X
H
H
VID
L
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
Legend: L = VIL, H = VIH, X = VIL or VIH,
= Pulse input. See ■ DC CHARACTERISTICS for voltage levels.
*1 : Manufacturer and device codes may also be accessed via a command register write sequence. Refer to
“MBM29F400TC/BC Command Definitions” in ■DEVICE BUS OPERATION.
*2 : Refer to the section on Sector Protection.
*3 : WE can be VIL if OE is VIL, OE at VIH initiates the write operations.
MBM29F400TC/BC User Bus Operation (BYTE = VIL)
DQ15
Operation
CE OE WE
A0
A1
A6
A9 DQ7 to DQ0 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
High-Z
High-Z
DIN
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
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.
*1 : Manufacturer and device codes may also be accessed via a command register write sequence. Refer to
“MBM29F400TC/BC Command Definitions” in ■DEVICE BUS OPERATION.
*2 : Refer to the section on Sector Protection.
*3 : WE can be VIL if OE is VIL, OE at VIH initiates the write operations.
7
SPANSION [ SPANSION ]
