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FM25640 Datasheet(PDF) 10 Page - Ramtron International Corporation |
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FM25640 Datasheet(HTML) 10 Page - Ramtron International Corporation |
10 / 13 page FM25640 Rev. 3.0 Mar. 2005 10 of 13 AC Parameters (TA = -40° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified) Symbol Parameter Min Max Units Notes fCK SCK Clock Frequency 0 5.0 MHz tCH Clock High Time 90 ns tCL Clock Low Time 90 ns tCSU Chip Select Setup 90 ns tCSH Chip Select Hold 90 ns tOD Output Disable 100 ns 2 tODV Output Data Valid 60 ns 3 tOH Output Data Hold 0 ns tD Deselect Time 100 ns tR Data In Rise Time 1 µs 1,2 tF Data In Fall Time 1 µs 1,2 tH Data In Hold Time 30 ns tSU Data In Setup Time 20 ns tHS /HOLD Input Setup Time 70 ns tHH /HOLD Input Hold Time 40 ns tHZ /HOLD Low to Data Out Hi-Z 100 ns 2 tLZ /HOLD High to Data Out Lo-Z 50 ns 2 Notes 1. Rise and fall times measured between 10% and 90% of waveform. 2. This parameter is characterized but not 100% tested. 3. For Clock High Time tCH ≤ 100 ns, the parameter tODV is extended such that tCH + tODV ≤ 160 ns. Capacitance (TA = 25° C, f=1.0 MHz, VDD = 5V) Symbol Parameter Max Units Notes CO Output Capacitance (SO) 8 pF 1 CI Input Capacitance 6 pF 1 Notes 1. This parameter is characterized and not 100% tested. AC Test Conditions Input Pulse Levels 10% and 90% of VDD Input rise and fall times 10 ns Input and output timing levels 0.5 VDD Output Load Capacitance 100 pF |
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