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CY7C1347G
Document #: 38-05516 Rev. *E
Page 9 of 21
Partial Truth Table for Read/Write
The partial read/write truth table for CY7C1347G follows.[2, 7]
Function
GW
BWE
BWD
BWC
BWB
BWA
Read
H
H
XXXX
Read
H
L
HHHH
Write Byte A – DQA
H
L
HHH
L
Write Byte B – DQB
HL
H
H
L
H
Write Bytes B, A
H
L
H
H
L
L
Write Byte C– DQC
HL
HL
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– DQD
H
L
L
HHH
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
LLLL
H
Write All Bytes
H
LLLLL
Write All Bytes
L
XXXXX
Note
7. Table is only a partial listing of the byte write combinations. Any combination of BWx is valid. Appropriate write is based on which byte write is active.
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