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CY7C1441KV33 Datasheet(PDF) 11 Page - Cypress Semiconductor |
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CY7C1441KV33 Datasheet(HTML) 11 Page - Cypress Semiconductor |
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11 / 32 page  CY7C1441KV33 CY7C1443KV33 CY7C1441KVE33 Document Number: 001-66677 Rev. *I Page 11 of 32 Partial Truth Table for Read/Write The partial truth table for read/write for CY7C1441KV33/CY7C1441KVE33 is as follows. [6, 7, 8] Function (CY7C1441KV33/CY7C1441KVE33) GW BWE BWD BWC BWB BWA Read H H XX XX Read H L HH HH Write Byte A (DQA, DQPA)H L H H H L Write Byte B (DQB, DQPB)H L H H L H Write Bytes A, B (DQA, DQB, DQPA, DQPB)H L H H L L Write Byte C (DQC, DQPC)H L H L H H Write Bytes C, A (DQC, DQA, DQPC, DQPA)H L H L H L Write Bytes C, B (DQC, DQB, DQPC, DQPB)H L H L L H Write Bytes C, B, A (DQC, DQB, DQA, DQPC, DQPB, DQPA) HL HL L L Write Byte D (DQD, DQPD)H L L H H H Write Bytes D, A (DQD, DQA, DQPD, DQPA)H L L H H L Write Bytes D, B (DQD, DQA, DQPD, DQPA)H L L H L H Write Bytes D, B, A (DQD, DQB, DQA, DQPD, DQPB, DQPA) HL LHL L Write Bytes D, B (DQD, DQB, DQPD, DQPB) H LLL H H Write Bytes D, B, A (DQD, DQC, DQA, DQPD, DQPC, DQPA) H LLL H L Write Bytes D, C, A (DQD, DQB, DQA, DQPD, DQPB, DQPA) H LLL L H Write All Bytes H L L L L L Write All Bytes L X X X X X Partial Truth Table for Read/Write The partial truth table for read/write for CY7C1443KV33 is as follows. [6, 7, 8] Function (CY7C1443KV33) GW BWE BWB BWA Read H H X X Read H L H H Write Byte A – (DQA and DQPA)H L H L Write Byte B – (DQB and DQPB)H L L H Write All Bytes H L L L Write All Bytes L X X X Notes 6. X = “Don't Care.” H = Logic HIGH, L = Logic LOW. 7. Table only lists a partial listing of the byte write combinations. Any Combination of BWX is valid Appropriate write is done based on which byte write is active. 8. BWx represents any byte write signal BW[A..H].To enable any byte write BWx, a Logic LOW signal should be applied at clock rise.Any number of bye writes can be enabled at the same time for any given write. |
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