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H8/3021 Datasheet(PDF) 555 Page - Renesas Technology Corp |
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H8/3021 Datasheet(HTML) 555 Page - Renesas Technology Corp |
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555 / 712 page  18. Electrical Characteristics Rev.2.00 Mar. 22, 2007 Page 531 of 684 REJ09B0352-0200 Item Symbol Min Max Unit Test Conditions Write data delay time t WDD — 55 ns Write data setup time 1 t WDS1 10 — Figure 18.7, Figure 18.8 Write data setup time 2 t WDS2 –10 — Write data hold time t WDH 20 — Read data access time 1 t ACC1* — 50 Read data access time 2 t ACC2* — 105 Read data access time 3 t ACC3* — 20 Read data access time 4 t ACC4* — 80 Precharge time t PCH* 40 — Wait setup time t WTS 25 — Figure 18.9 Wait hold time t WTH 5 — Note: * The following times depend on the clock cycle time as shown below. t ACC1 = 1.5 × tcyc – 34 (ns) t WSW1 = 1.0 × tcyc – 24 (ns) t ACC2 = 2.5 × tcyc – 34 (ns) t WSW2 = 1.5 × tcyc – 22 (ns) t ACC3 = 1.0 × tcyc – 36 (ns) t PCH = 1.0 × tcyc – 21 (ns) t ACC4 = 2.0 × tcyc – 31 (ns) |
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