Filter
Top Products
CY7C1471BV25
CY7C1473BV25, CY7C1475BV25
Document #: 001-15013 Rev. *E Page 12 of 30
Table 5. Truth Table for Read/Write
The read-write truth table for CY7C1471BV25 follows.
[1, 2, 8]
Function
WE BW
A
BW
B
BW
C
BW
D
Read HXXXX
Write No bytes written L H H H H
Write Byte A – (DQ
A
and DQP
A
) L LHHH
Write Byte B – (DQ
B
and DQP
B
)LHLHH
Write Byte C – (DQ
C
and DQP
C
)LHHLH
Write Byte D – (DQ
D
and DQP
D
)LHHHL
Write All Bytes LLLLL
Table 6. Truth Table for Read/Write
The read-write truth table for CY7C1473BV25 follows.
[1, 2, 8]
Function
WE BW
b
BW
a
Read HXX
Write – No Bytes Written L H H
Write Byte a – (DQ
a
and
DQP
a
)LHL
Write Byte b – (DQ
b
and
DQP
b
)LLH
Write Both Bytes L L L
Table 7. Truth Table for Read/Write
The read-write truth table for CY7C1475BV25 follows.
[1, 2, 8]
Function
WE BW
x
Read HX
Write – No Bytes Written L H
Write Byte X − (DQ
x
and
DQP
x)
LL
Write All Bytes L All BW
= L
Note
8. This table is only a partial listing of the byte write combinations. Any combination of BW
X
is valid. Appropriate write is based on which byte write is active.
[+] Feedback