Cypress CY14B104LA Manual De Usuario
PRELIMINARY
CY14B104LA, CY14B104NA
Document #: 001-49918 Rev. *A
Page 16 of 23
Truth Table For SRAM Operations
HSB should remain HIGH for SRAM Operations.
For x8 Configuration
CE
WE
OE
Inputs/Outputs
[2]
Mode
Power
H
X
X
High Z
Deselect/Power down
Standby
L
H
L
Data Out (DQ
0
–DQ
7
);
Read
Active
L
H
H
High Z
Output Disabled
Active
L
L
X
Data in (DQ
0
–DQ
7
);
Write
Active
For x16 Configuration
CE
WE
OE
BHE
BLE
Inputs/Outputs
[2]
Mode
Power
H
X
X
X
X
High-Z
Deselect/Power down
Standby
L
X
X
H
H
High-Z
Output Disabled
Active
L
H
L
L
L
Data Out (DQ
0
–DQ
15
)
Read
Active
L
H
L
H
L
Data Out (DQ
0
–DQ
7
);
DQ
8
–DQ
15
in High-Z
Read
Active
L
H
L
L
H
Data Out (DQ
8
–DQ
15
);
DQ
0
–DQ
7
in High-Z
Read
Active
L
H
H
L
L
High-Z
Output Disabled
Active
L
H
H
H
L
High-Z
Output Disabled
Active
L
H
H
L
H
High-Z
Output Disabled
Active
L
L
X
L
L
Data In (DQ
0
–DQ
15
)
Write
Active
L
L
X
H
L
Data In (DQ
0
–DQ
7
);
DQ
8
–DQ
15
in High-Z
Write
Active
L
L
X
L
H
Data In (DQ
8
–DQ
15
);
DQ
0
–DQ
7
in High-Z
Write
Active