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PC100-323-620 Datasheet(PDF) 8 Page - Siemens Semiconductor Group |
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PC100-323-620 Datasheet(HTML) 8 Page - Siemens Semiconductor Group |
8 / 17 page HYS64(72)V2200/4220GU-8/-10 SDRAM-Modules Semiconductor Group 8 AC Characteristics 3)4) T A = 0 to 70 °C; VSS = 0 V; VCC = 3.3 V ± 0.3 V, tT = 1 ns Parameter Symbol Limit Values Unit Note -8 PC100 2-2-2 -8-3 PC100 3-2-3 -10 PC66 2-2-2 min. max. min. max. min. max. Clock and Clock Enable Clock Cycle Time CAS Latency = 3 CAS Latency = 2 t CK 10 10 10 10 10 15 ns ns System Frequency CAS Latency = 3 CAS Latency = 2 f CK – – 100 100 – – 100 100 – – 100 66 MHz MHz Clock Access Time CAS Latency = 3 CAS Latency = 2 t AC – – 6 6 – – 6 7 – – 8 9 ns ns 4,5) Clock High Pulse Width t CH 3–3 – 3.5 – ns 6) Clock Low Pulse Width t CL 3–3 – 3.5 – ns 6) Input Setup time t CS 2–2 –3– ns 7) Input Hold Time t CH 1–1 –1– ns 7) CKE Setup Time (Power down mode) t CKSP 2.5 – 2.5 – 3 – ns 8) CKE Setup Time (Self Refresh Exit) t CKSR 8–8 –8– ns 9) Transition time (rise and fall) t T 1–1 –1– ns Common Parameters RAS to CAS delay t RCD 20 – 20 – 30 – ns Cycle Time t RC 70 120k 70 120k 75 120k ns Active Command Period t RAS 45 – 45 – 45 – ns Precharge Time t RP 20 – 30 – 30 – ns Bank to Bank Delay Time t RRD 16 – 20 – 20 – ns CAS to CAS delay time (same bank) t CCD 1–1 –1– CLK |
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