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HYB514400BJ-50 Datasheet(PDF) 6 Page - Siemens Semiconductor Group |
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HYB514400BJ-50 Datasheet(HTML) 6 Page - Siemens Semiconductor Group |
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6 / 24 page  HYB 514400BJ-50/-60 1M × 4 DRAM Semiconductor Group 6 1998-10-01 Capacitance T A = 0 to 70 °C; VCC = 5 V ± 10 %; f = 1 MHz Parameter Symbol Limit Values Unit min. max. Input capacitance (A0 to A9) C I1 –5 pF Input capacitance (RAS, CAS, WE, OE) C I2 –7 pF Output capacitance (IO1 to IO4) C IO –7 pF AC Characteristics 5, 6 T A = 0 to 70 °C, VCC = 5 V ± 10 %, tT = 5 ns Parameter Symbol Limit Values Unit Note -50 -60 min. max. min. max. Common Parameters Random read or write cycle time t RC 95 – 110 – ns RAS precharge time t RP 35 – 40 – ns RAS pulse width t RAS 50 10k 60 10k ns CAS pulse width t CAS 13 10k 15 10k ns Row address setup time t ASR 0– 0 – ns Row address hold time t RAH 8 – 10 – ns Column address setup time t ASC 0– 0 – ns Column address hold time t CAH 10 – 15 – ns RAS to CAS delay time t RCD 18 37 20 45 RAS to column address delay time t RAD 13 25 15 30 ns RAS hold time t RSH 13 – 15 – ns CAS hold time t CSH 50 – 60 – ns CAS to RAS precharge time t CRP 5– 5 – ns Transition time (rise and fall) t T 3 50 3 50 ns 7 Refresh period t REF – 16 – 16 ms Read Cycle Access time from RAS t RAC – 50 – 60 ns 8, 9 Access time from CAS t CAC – 13 – 15 ns 8, 9 Access time from column address t AA – 25 – 30 ns 8, 10 OE access time t OEA – 13 – 15 ns |
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