Cypress CY7C1338G manual Partial Truth Table for Read/Write2, Function

CY7C1338G

Partial Truth Table for Read/Write[2, 7]

Function	GW	BWE	BWD	BWC	BWB	BWA
Read	H	H	X	X	X	X
Read	H	L	H	H	H	H
Write Byte A	H	L	H	H	H	L
Write Byte B	H	L	H	H	L	H
Write Bytes B, A	H	L	H	H	L	L
Write Byte 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	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, B	H	L	L	L	H	H
Write Bytes D, B, A	H	L	L	L	H	L
Write Bytes D, C, A	H	L	L	L	L	H
Write All Bytes	H	L	L	L	L	L
Write All Bytes	L	X	X	X	X	X

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.

Document #: 38-05521 Rev. *D Page 7 of 17