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MCIMX6S8DVM10AC Datasheet(PDF) 44 Page - Freescale Semiconductor, Inc |
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MCIMX6S8DVM10AC Datasheet(HTML) 44 Page - Freescale Semiconductor, Inc |
44 / 168 page i.MX 6Solo/6DualLite Applications Processors for Consumer Products, Rev. 3 44 Freescale Semiconductor Electrical Characteristics 4.7.2 DDR I/O AC Parameters The LPDDR2 interface mode fully complies with JESD209-2B LPDDR2 JEDEC standard release June, 2009. The DDR3/DDR3L interface mode fully complies with JESD79-3D DDR3 JEDEC standard release April, 2008. Table 31 shows the AC parameters for DDR I/O operating in LPDDR2 mode. Table 29. General Purpose I/O AC Parameters 1.8 V Mode Parameter Symbol Test Condition Min Typ Max Unit Output Pad Transition Times, rise/fall (Max Drive, ipp_dse=111) tr, tf 15 pF Cload, slow slew rate 15 pF Cload, fast slew rate —— 2.72/2.79 1.51/1.54 ns Output Pad Transition Times, rise/fall (High Drive, ipp_dse=101) tr, tf 15 pF Cload, slow slew rate 15 pF Cload, fast slew rate —— 3.20/3.36 1.96/2.07 Output Pad Transition Times, rise/fall (Medium Drive, ipp_dse=100) tr, tf 15 pF Cload, slow slew rate 15 pF Cload, fast slew rate —— 3.64/3.88 2.27/2.53 Output Pad Transition Times, rise/fall (Low Drive. ipp_dse=011) tr, tf 15 pF Cload, slow slew rate 15 pF Cload, fast slew rate —— 4.32/4.50 3.16/3.17 Input Transition Times1 1 Hysteresis mode is recommended for inputs with transition times greater than 25 ns. trm — — — 25 ns Table 30. General Purpose I/O AC Parameters 3.3 V Mode Parameter Symbol Test Condition Min Typ Max Unit Output Pad Transition Times, rise/fall (Max Drive, ipp_dse=101) tr, tf 15 pF Cload, slow slew rate 15 pF Cload, fast slew rate —— 1.70/1.79 1.06/1.15 ns Output Pad Transition Times, rise/fall (High Drive, ipp_dse=011) tr, tf 15 pF Cload, slow slew rate 15 pF Cload, fast slew rate —— 2.35/2.43 1.74/1.77 Output Pad Transition Times, rise/fall (Medium Drive, ipp_dse=010) tr, tf 15 pF Cload, slow slew rate 15 pF Cload, fast slew rate —— 3.13/3.29 2.46/2.60 Output Pad Transition Times, rise/fall (Low Drive. ipp_dse=001) tr, tf 15 pF Cload, slow slew rate 15 pF Cload, fast slew rate —— 5.14/5.57 4.77/5.15 Input Transition Times1 1 Hysteresis mode is recommended for inputs with transition times greater than 25 ns. trm — — — 25 ns Table 31. DDR I/O LPDDR2 Mode AC Parameters1 Parameter Symbol Test Condition Min Max Unit AC input logic high Vih(ac) — Vref + 0.22 OVDD V AC input logic low Vil(ac) — 0 Vref - 0.22 V AC differential input high voltage2 Vidh(ac) — 0.44 — V AC differential input low voltage Vidl(ac) — — 0.44 V Input AC differential cross point voltage3 Vix(ac) Relative to Vref -0.12 0.12 V |
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