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CY7C1345G
Document Number: 38-05517 Rev. *E Page 9 of 20
Truth Table for Read or Write
The partial truth table for read or write follows.
[1, 6]
Function GW BWE BW
D
BW
C
BW
B
BW
A
Read HHXXXX
Read H L H H H H
Write Byte (A, DQP
A
)HLHHHL
Write Byte (B, DQP
B
)HLHHLH
Write Bytes (B, A, DQP
A
, DQP
B
)HLHHLL
Write Byte (C, DQP
C
)HLHLHH
Write Bytes (C, A, DQP
C
, DQP
A
)HLHLHL
Write Bytes (C, B, DQP
C
, DQP
B
)HLHLLH
Write Bytes (C, B, A, DQP
C
, DQP
B
, DQP
A
)HLHLLL
Write Byte (D, DQP
D
) HL LHHH
Write Bytes (D, A, DQP
D
, DQP
A
)HLLHHL
Write Bytes (D, B, DQP
D
, DQP
A
)HLLHLH
Write Bytes (D, B, A, DQP
D
, DQP
B
, DQP
A
)HLLHLL
Write Bytes (D, B, DQP
D
, DQP
B
)HLLLHH
Write Bytes (D, B, A, DQP
D
, DQP
C
, DQP
A
)HLLLHL
Write Bytes (D, C, A, DQP
D
, DQP
B
, DQP
A
)HLLLLH
Write All Bytes HLLLLL
Write All Bytes L XXXXX
Note
6. This table is only a partial listing of the byte write combinations. Any combination of BW
x
is valid. Appropriate write is done based on the active byte write.