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CY7C1444KV33 Folha de dados(PDF) 15 Page - Cypress Semiconductor |
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CY7C1444KV33 Folha de dados(HTML) 15 Page - Cypress Semiconductor |
15 / 22 page CY7C1444KV33 CY7C1445KV33 Document Number: 001-66678 Rev. *G Page 15 of 22 Figure 4. Write Cycle Timing [19, 20] Switching Waveforms (continued) tCYC tCL CLK ADSP tADH tADS ADDRESS tCH OE ADSC CE tAH tAS A1 tCEH tCES BWE, BWX ADV BURST READ BURST WRITE D(A2) D(A2 + 1) D(A2 + 1) D(A3) D(A3 + 1) D(A3 + 2) D(A2 + 3) A2 A3 Extended BURST WRITE D(A2 + 2) Single WRITE tADH tADS tADH tADS t OEHZ tADVH tADVS tWEH tWES t DH t DS GW tWEH tWES Byte write signals are ignored for first cycle when ADSP initiates burst ADSC extends burst ADV suspends burst DON’T CARE UNDEFINED D(A1) High-Z Data in (D) Data Out (Q) Notes 19. On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH or CE2 is LOW or CE3 is HIGH. 20. Full width write can be initiated by either GW LOW; or by GW HIGH, BWE LOW and BWX LOW. |
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