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CY7C1338G
Document #: 38-05521 Rev. *D
Page 7 of 17
Partial Truth Table for Read/Write[2, 7]
Function
GW
BWE
BWD
BWC
BWB
BWA
Read
H
H
XXXX
Read
H
L
HHHH
Write Byte A
H
L
HHH
L
Write Byte B
H
L
H
H
L
H
Write Bytes B, A
H
L
H
H
L
L
Write Byte C
H
LH
LH
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
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, B
H
L
L
L
H
H
Write Bytes D, B, A
H
L
L
L
H
L
Write Bytes D, C, A
H
LLLL
H
Write All Bytes
H
LLLLL
Write All Bytes
L
XXXXX
Note:
7. Table only lists a partial listing of the byte write combinations. Any combination of BWX is valid. Appropriate write will be done based on which byte write is active.
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