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Q67100-Q980 Datasheet(PDF) 8 Page - Siemens Semiconductor Group |
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Q67100-Q980 Datasheet(HTML) 8 Page - Siemens Semiconductor Group |
8 / 9 page Semiconductor Group 578 AC Characteristics4) 5) (cont’d) T A = 0 to 70 ˚C, VCC = 5 V ± 10 %, tT = 5 ns Parameter Symbol Limit Values Unit HYM 324020S/GS-60 HYM 324020S/GS-70 min. max. min. max. Column address to RAS lead time t RAL 30 – 35 – ns Read command setup time t RCS 0–0–ns Read command hold time 8) t RCH 0–0–ns Read command hold time ref. to RAS 8) t RRH 0–0–ns Write command hold time t WCH 10 – 15 – ns Write command pulse width t WP 10 – 15 – ns Write command to RAS lead time t RWL 15 – 20 – ns Write command to CAS lead time t CWL 15 – 20 – ns Data setup time 9) t DS 0–0–ns Data hold time 9) t DH 15 – 15 – ns Refresh period t REF – 32 – 32 ms Write command setup time 10) t WCS 0–0–ns CAS setup time 13) t CSR 10 – 10 – ns CAS hold time 13) t CHR 10 – 10 – ns RAS to CAS precharge time t RPC 5–5–ns CAS precharge time t CP 10 – 10 – ns Write to RAS precharge time 13) t WRP 10 – 10 – ns Write hold time ref. to RAS 13) t WRH 10 – 10 – ns HYM 324020S/GS-60/-70 4M x 32-Bit |
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