Cypress Perform CY7C1370D User Manual
Page 10
CY7C1370D
CY7C1372D
Document #: 38-05555 Rev. *F
Page 10 of 28
Partial Write Cycle Description
[1, 2, 3, 8]
Function (CY7C1370D)
WE
BW
d
BW
c
BW
b
BW
a
Read
H
X
X
X
X
Write – No bytes written
L
H
H
H
H
Write Byte a – (DQ
a
and
DQP
a
)
L
H
H
H
L
Write Byte b – (DQ
b
and
DQP
b
)
L
H
H
L
H
Write Bytes b, a
L
H
H
L
L
Write Byte c – (DQ
c
and
DQP
c
)
L
H
L
H
H
Write Bytes c, a
L
H
L
H
L
Write Bytes c, b
L
H
L
L
H
Write Bytes c, b, a
L
H
L
L
L
Write Byte d – (DQ
d
and
DQP
d
)
L
L
H
H
H
Write Bytes d, a
L
L
H
H
L
Write Bytes d, b
L
L
H
L
H
Write Bytes d, b, a
L
L
H
L
L
Write Bytes d, c
L
L
L
H
H
Write Bytes d, c, a
L
L
L
H
L
Write Bytes d, c, b
L
L
L
L
H
Write All Bytes
L
L
L
L
L
Function (CY7C1372D)
WE
BW
b
BW
a
Read
H
x
x
Write – No Bytes Written
L
H
H
Write Byte a – (DQ
a
and
DQP
a
)
L
H
L
Write Byte b – (DQ
b
and
DQP
b
)
L
L
H
Write Both Bytes
L
L
L
Note:
8. Table only lists a partial listing of the byte write combinations. Any Combination of BW
X
is valid Appropriate write will be done based on which byte write is active.