Cypress CY7C1462AV33 User Manual
Page 9
CY7C1460AV33
CY7C1462AV33
CY7C1464AV33
Document #: 38-05353 Rev. *D
Page 9 of 27
Write Cycle
(Begin Burst)
External
L
L
L
L
L
X
L
L-H
Data In (D)
Write Cycle
(Continue Burst)
Next
X
L
H
X
L
X
L
L-H
Data In (D)
NOP/WRITE ABORT
(Begin Burst)
None
L
L
L
L
H
X
L
L-H
Tri-State
WRITE ABORT
(Continue Burst)
Next
X
L
H
X
H
X
L
L-H
Tri-State
IGNORE CLOCK
EDGE
(Stall)
Current
X
L
X
X
X
X
H
L-H
-
SLEEP MODE
None
X
H
X
X
X
X
X
X
Tri-State
Truth Table
[1, 2, 3, 4, 5, 6, 7]
(continued)
Operation
Address
Used
CE
ZZ
ADV/LD
WE
BW
x
OE
CEN
CLK
DQ
Partial Write Cycle Description
[1, 2, 3, 8]
Function (CY7C1460AV33)
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
LL
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 (CY7C1462AV33)
[2,8]
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
Function (CY7C1464AV33)
[2,8]
WE
BW
x
Read
H
x
Write – No Bytes Written
L
H
Write Byte X
− (DQ
x
and
DQP
x)
L
L
Write All Bytes
L
All BW = L
Note:
8. Table only lists a partial listing of the byte write combinations. Any combination of BW
[a:d]
is valid. Appropriate write will be done based on which byte write is active.