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FM25H20-G Datasheet(PDF) 11 Page - Ramtron International Corporation |
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FM25H20-G Datasheet(HTML) 11 Page - Ramtron International Corporation |
11 / 15 page FM25H20 - 2Mb SPI FRAM Rev. 2.2 Sept. 2010 Page 11 of 15 AC Parameters (TA = -40 °C to + 85°C, VDD = 2.7V to 3.6V, CL = 30pF) Symbol Parameter Min Max Units Notes fCK C Clock Frequency 0 40 MHz tCH Clock High Time 11 ns 1 tCL Clock Low Time 11 ns 1 tSU Chip Select Setup 10 ns tSH Chip Select Hold 10 ns tOD Output Disable Time 12 ns 2 tODV Output Data Valid Time 9 tOH Output Hold Time 0 ns tD Deselect Time 40 ns tR Data In Rise Time 50 ns 2,3 tF Data In Fall Time 50 ns 2,3 tSU Data Setup Time 5 ns tH Data Hold Time 5 ns tHS /HOLD Setup Time 10 ns tHH /HOLD Hold Time 10 ns tHZ /HOLD Low to Hi-Z 20 ns 2 tLZ /HOLD High to Data Active 20 ns 2 Notes 1. tCH + tCL = 1/fCK. 2. This parameter is characterized but not 100% tested. 3. Rise and fall times measured between 10% and 90% of waveform. AC Test Conditions Input Pulse Levels 10% and 90% of VDD Input rise and fall times 3 ns Input and output timing levels 0.5 VDD Output Load Capacitance 30 pF Capacitance (TA = 25 ° C, f=1.0 MHz, VDD = 3.3V) Symbol Parameter Min Max Units Notes CO Output Capacitance (Q) - 8 pF 1 CI Input Capacitance - 6 pF 1 Notes 1. This parameter is characterized and not 100% tested. Data Retention (TA = -40 °C to +85°C) Symbol Parameter Min Units Notes TDR Data Retention 10 Years |
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