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FM1808 Datasheet(PDF) 8 Page - List of Unclassifed Manufacturers |
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FM1808 Datasheet(HTML) 8 Page - List of Unclassifed Manufacturers |
8 / 12 page Ramtron FM1808-70 27 July 2000 8/12 Read Cycle AC Parameters TA = -40 ° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified Symbol Parameter -70 -120 Units Notes Min Max Min Max tCE Chip Enable Access Time (to data valid) 70 120 ns tCA Chip Enable Active Time 70 10,000 120 10,000 ns tRC Read Cycle Time 130 180 ns tPC Precharge Time 60 60 ns tAS Address Setup Time 5 5 ns tAH Address Hold Time 10 10 ns tOE Output Enable Access Time 10 10 ns tHZ Chip Enable to Output High-Z 15 15 ns 1 tOHZ Output Enable to Output High-Z 15 15 ns 1 Write Cycle AC Parameters TA = -40 ° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified Symbol Parameter -70 -120 Units Notes Min Max Min Max tCA Chip Enable Active Time 70 10,000 120 10,000 ns tCW Chip Enable to Write High 70 120 ns tWC Write Cycle Time 130 180 ns tPC Precharge Time 60 60 ns tAS Address Setup Time 0 0 ns tAH Address Hold Time 10 10 ns tWP Write Enable Pulse Width 40 40 ns tDS Data Setup 30 40 ns tDH Data Hold 5 5 ns tWZ Write Enable Low to Output High Z 15 15 ns 1 tWX Write Enable High to Output Driven 10 10 ns 1 tHZ Chip Enable to Output High-Z 15 15 ns 1 tWS Write Setup 0 0 ns 2 tWH Write Hold 0 0 ns 2 Notes 1 This parameter is periodically sampled and not 100% tested. 2 The relationship between /CE and /WE determines if a /CE- or /WE-controlled write occurs. There is no timing specification associated with this relationship. Power Cycle Timing TA = -40 ° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified Symbol Parameter Min Units Notes tPU VDD Min to First Access Start 1 µS tPD Last Acces s Complete to VDD Min 0 µS Capacitance TA = 25 ° C , f=1.0 MHz, VDD = 5V Symbol Parameter Max Units Notes CI/O Input Output Capacitance 8 pF CIN Input Capacitance 6 pF |
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