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46DR16640A 데이터시트(PDF) 13 Page - Integrated Silicon Solution, Inc |
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46DR16640A 데이터시트(HTML) 13 Page - Integrated Silicon Solution, Inc |
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13 / 28 page ![]() IS43/46DR81280A, IS43/46DR16640A Integrated Silicon Solution, Inc. – www.issi.com – 13 Rev. D, 08/30/2011 ODT Timing for Active/Standby (Idle) Mode and Standard Active Power‐Down Mode CK# CKE ODT CK RTT VIH(AC) VIL(AC) Internal Term. Resistance tIS tIS tAON(Min) tAON(Max) tAOND tAOFD tIS tAOF(Min) tAOF(Max) 01 234 5 tIS ~ ~ ~ ~ tANPD tAXPD 67 Notes: 1. Both ODT to Power Down Entry and Exit Latency timing parameter tANPD and tAXPD are met, therefore Non‐Power Down Mode timings have to be applied. 2. ODT turn‐on time, tAON(Min) is when the device leaves high impedance and ODT resistance begins to turn on. ODT turn on time max, tAON(Max) is when the ODT resistance is fully on. Both are measured from tAOND. 3. ODT turn off time min, tAOF(Min), is when the device starts to turn off the ODT resistance. ODT turn off time max, tAOF(Max) is when the bus is in high impedance. Both are measured from tAOFD. ODT Timing for Precharge Power‐Down Mode Note: Both ODT to Power Down Endtry and Exit Latencies tANPD and tAXPD are not met, therefore Power‐Down Mode timings have to be applied. |
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