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K4H640838A-TCA0 Datasheet(PDF) 3 Page - Samsung semiconductor |
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K4H640838A-TCA0 Datasheet(HTML) 3 Page - Samsung semiconductor |
3 / 53 page - 3 - REV. 1.0 November. 2. 2000 128Mb DDR SDRAM Revision History(continued) Version 0.7 (March, 2000) - Changed 128Mb spec from target to Preliminary version. - Changed partnames as follows. - Changed input cap. spec. - Changed operating condition. - Added Overshoot/Undershoot spec . Vih(max) = 4.2V, the overshoot voltage duration is ≤ 3ns at VDD. . Vil(min) =- 1.5V, the overshoot voltage duration is ≤ 3ns at VSS. - Changed AC parameters as follows. - Added DC spec values. Version 0.71 (April, 2000) - Corrected a typo for tRAS at 133Mhz/CL2.5 from 48ns t0 45ns. - Corrected a typo in "General Information" table from 64Mx4 to 8Mx16. Version 0.72(May,2000) - Changed DC spec item & test condition Version 0.73(June,2000) - Added updated DC spec values - Deleted tDAL in AC parameter Version 1.0(November,2000) - Eliminate "preliminary" from to KM44L32031BT-G(L)Z/Y/0 K4H280438B-TC(L)A2/B0/A0 KM48L16031BT-G(L)Z/Y/0 K4H280838B-TC(L)A2/B0/A0 KM416L8031BT-G(L)Z/Y/0 K4H281638B-TC(L)A2/B0/A0 from to CK/CK 2.5pF ~ 3.5pF 2.0pF ~ 3.0pF w/ Delta Cin = 0.25pF DQ/DQS/DM 4.0pF ~ 5.5pF 4.0pF ~ 5.0pF w/ Delta Cin = 0.5pF CMD/Addr 2.5pF ~ 3.5pF 2.0pF ~ 3.0pF with Delta Cin = 0.5pF from to Vil/Vih(ac) Vref +/- 0.35V Vref +/- 0.31V VIL/VIH(dc) Vref +/- 0.18V Vref +/- 0.15V from to Comments tDQSQ +/- 0.5(PC266), +/- 0.6(PC200) +0.5(PC266), +0.6(PC200) tDV +/- 0.35tCK - Removed tQH - tHPmin - 0.75ns(PC266) New Definition tHPmin - 1.0ns(PC200) tHP - tCLmin or tCHmin New Definition |
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