Cypress CY7C1339G manual Partial Truth Table for Read/Write 2, Function, BWE BW D BW C BW B BW a

CY7C1339G

Partial Truth Table for Read/Write [2, 8]

Function	GW	BWE	BWD	BWC	BWB	BWA
Read	H	H	X	X	X	X
Read	H	L	H	H	H	H
Write Byte A – DQA	H	L	H	H	H	L
Write Byte B – DQB	H	L	H	H	L	H
Write Bytes B, A	H	L	H	H	L	L
Write Byte C– DQC	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– DQD	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

Note:

8.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 #: 38-05520 Rev. *F Page 7 of 18

[+] Feedback