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K9F4008W0A- Datasheet(PDF) 8 Page - Samsung semiconductor |
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K9F4008W0A- Datasheet(HTML) 8 Page - Samsung semiconductor |
8 / 24 page K9F4008W0A-TCB0, K9F4008W0A-TIB0 FLASH MEMORY 8 AC Characteristics for Operation NOTE : 1. The time to Ready depends on the value of the pull-up resistor tied R/B pin. Parameter Symbol Min Max Unit Data Transfer from Cell to Register tR - 15 µs ALE to RE Delay(ID Delay) tAR1 20 - ns ALE to RE Delay(Read Cycle) tAR2 250 - ns CE low to RE low (ID read) tCR 250 - ns CLE to RE Delay tCLR 50 - ns Ready to RE Low tRR 100 - ns RE Pulse Width tRP 60 - ns WE High to Busy tWB - 200 ns Read Cycle Time tRC 120 - ns RE Access Time tREA - 50 ns RE High to Output Hi-Z tRHZ 0 30 ns CE High to Output Hi-Z tCHZ - 50 ns RE High Hold Time tREH 40 - ns Output Hi-Z to RE Low tIR 0 - ns CE High to Ready(in case of interception by CE at read) tCRY - 100+tr(R/B)(1) ns RE Low to Status Output tRSTO - 60 ns CE Low to Status Output tCSTO - 70 ns WE High to RE Low tWHR 50 - ns RE access time(Read ID) tWHRID 100 - ns Device Resetting Time(Read/Program/Erase) tRST - 5/10/500 µs AC Timing Characteristics for Command / Address / Data Input Parameter Symbol Min Max Unit CLE Set-up Time tCLS 50 - ns CLE Hold Time tCLH 50 - ns CE Setup Time tCS 50 - ns CE Hold Time tCH 50 - ns WE Pulse Width tWP 60 - ns ALE Setup Time tALS 50 - ns ALE Hold Time tALH 50 - ns Data Set-up Time tDS 40 - ns Data Hold Time tDH 20 - ns Write Cycle Time tWC 120 - ns WE High Hold Time tWH 40 - ns |
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