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DS1244P Datasheet(PDF) 11 Page - Dallas Semiconductor |
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DS1244P Datasheet(HTML) 11 Page - Dallas Semiconductor |
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11 / 19 page  DS1244/DS1244P 11 of 19 MEMORY AC ELECTRICAL CHARACTERISTICS Over the operating range (3.3V) DS1244W-120 PARAMETER SYMBOL MIN MAX UNITS NOTES Read Cycle Time tRC 120 ns Access Time tACC 120 ns OE to Output Valid tOE 60 ns CE to Output Valid tCO 120 ns OE or CE to Output Active tCOE 5ns 5 Output High-Z from Deselection tOD 40 ns 5 Output Hold from Address Change tOH 5ns Write Cycle Time tWC 120 ns Write Pulse Width tWP 90 ns 3 Address Setup Time tAW 0ns Write Recovery Time tWR 20 ns 10 Output High-Z from WE tODW 40 ns 5 Output Active from WE tOEW 5ns 5 Data Setup Time tDS 50 ns 4 Data Hold Time from WE tDH 20 ns 4 PHANTOM CLOCK AC ELECTRICAL CHARACTERISTICS Over the operating range (3.3V) PARAMETER SYMBOL MIN TYP MAX UNITS NOTES Read Cycle Time tRC 120 ns CE Access Time tCO 100 ns OE Access Time tOE 100 ns CE to Output Low-Z tCOE 5ns OE to Output Low-Z tOEE 5ns CE to Output High-Z tOD 40 ns 5 OE to Output High-Z tODO 40 ns 5 Read Recovery tRR 20 ns Write Cycle Time tWC 120 ns Write Pulse Width tWP 100 ns 3 Write Recovery tWR 20 ns 10 Data Setup Time tDS 45 ns 4 Data Hold Time tDH 0ns 4 CE Pulse Width tCW 105 ns RESET Pulse Width tRST 120 ns |
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