CY7C1386D, CY7C1386F
CY7C1387D, CY7C1387F
Document Number: 38-05545 Rev. *E
Page 10 of 30
Truth Table for Read/Write
[6, 9]
Function (CY7C1386D/CY7C1386F)
GW
BWE
BW
D
BW
C
BW
B
BW
A
Read
H
H
X
X
X
X
Read
H
L
H
H
H
H
Write Byte A – (DQ
A
and DQP
A
)
H
L
H
H
H
L
Write Byte B – (DQ
B
and DQP
B
)
H
L
H
H
L
H
Write Bytes B, A
H
L
H
H
L
L
Write Byte C – (DQ
C
and DQP
C
)
H
L
H
L
H
H
Write Bytes C, A
H
L
H
L
H
L
Write Bytes C, B
H
L
H
L
L
H
Write Bytes C, B, A
H
L
H
L
L
L
Write Byte D – (DQ
D
and DQP
D
)
H
L
L
H
H
H
Write Bytes D, A
H
L
L
H
H
L
Write Bytes D, B
H
L
L
H
L
H
Write Bytes D, B, A
H
L
L
H
L
L
Write Bytes D, C
H
L
L
L
H
H
Write Bytes D, C, A
H
L
L
L
H
L
Write Bytes D, C, B
H
L
L
L
L
H
Write All Bytes
H
L
L
L
L
L
Write All Bytes
L
X
X
X
X
X
Truth Table for Read/Write
[6, 9]
Function (CY7C1387D/CY7C1387F)
GW
BWE
BW
B
BW
A
Read
H
H
X
X
Read
H
L
H
H
Write Byte A – (DQ
A
and DQP
A
)
H
L
H
L
Write Byte B – (DQ
B
and DQP
B
)
H
L
L
H
Write All Bytes
H
L
L
L
Write All Bytes
L
X
X
X
Note
9. 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.
[+] Feedback
