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HYB314171BJL-60 Datasheet(PDF) 7 Page - Siemens Semiconductor Group |
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HYB314171BJL-60 Datasheet(HTML) 7 Page - Siemens Semiconductor Group |
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7 / 24 page  HYB 314171BJ/BJL-50/-60/-70 3.3V 256 K x 16-DRAM Semiconductor Group 7 AC Characteristics 5)6) T A = 0 to 70 °C; VSS = 0 V; VCC = 3.3 V ± 0.3 V, tT = 5 ns Parameter Symbol Limit Values Unit Note -50 - 60 - 70 min. max. min. max. min. max. Common Parameters Random read or write cycle time t RC 95 – 110 – 130 – ns RAS precharge time t RP 35 – 40 – 50 – ns RAS pulse width t RAS 50 10k 60 10k 70 10k ns CAS pulse width t CAS 15 10k 15 10k 20 10k ns Row address setup time t ASR 0–0–0–ns Row address hold time t RAH 10 – 10 – 10 – ns Column address setup time t ASC 0–0–0–ns Column address hold time t CAH 10 – 15 – 15 – ns RAS to CAS delay time t RCD 20 35 20 45 20 50 ns RAS to column address delay time t RAD 15 25 15 30 15 35 ns RAS hold time t RSH 15 – 15 – 20 – ns CAS hold time t CSH 50 – 60 – 70 – ns CAS to RAS precharge time t CRP 5–5–5–ns Transition time (rise and fall) t T 350 3 50 350 ns 7 Refresh period t REF –16 – 16 –16 ms Refresh period (L-version) t REF – 128 – 128 – 128 ms Read Cycle Access time from RAS t RAC –50 – 60 –70 ns 8, 9 Access time from CAS t CAC –15 – 15 –20 ns 8, 9 Access time from column address t AA –25 – 30 –35 ns 8,10 OE access time t OEA –15 – 15 –20 ns Column address to RAS lead time t RAL 25 – 30 – 35 – ns Read command setup time t RCS 0–0–0–ns Read command hold time t RCH 0–0–0–ns 11 Read command hold time ref. to RAS t RRH 0–0–0–ns 11 CAS to output inlow-Z t CLZ 0–0–0–ns 8 |
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