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PCIMX515CJM6C Datasheet(PDF) 28 Page - Freescale Semiconductor, Inc |
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PCIMX515CJM6C Datasheet(HTML) 28 Page - Freescale Semiconductor, Inc |
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28 / 184 page ![]() i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 1 28 Freescale Semiconductor Preliminary—Subject to Change Without Notice Electrical Characteristics 3.4 Output Buffer Impedance Characteristics This section defines the I/O Impedance parameters of the i.MX51 processor. 3.4.1 LVIO I/O Output Buffer Impedance 3.4.2 DDR Output Buffer Impedance Table 21. LVIO I/O Output Buffer Impedance Parameter Symbol Conditions Min Typical Max Unit OVDD 2.775 V OVDD 1.875 V Output Driver Impedance Rpu Low Drive Strength, Ztl = 150 Ω Medium Drive Strength, Ztl = 75 Ω High Drive Strength, Ztl = 50 Ω Max Drive Strength, Ztl = 37.5 Ω 80 40 27 20 104 52 35 26 150 75 51 38 250 125 83 62 Ω Output Driver Impedance Rpd Low Drive Strength, Ztl = 150 Ω Medium Drive Strength, Ztl = 75 Ω High Drive Strength, Ztl = 50 Ω Max Drive Strength, Ztl = 37.5 Ω 64 32 21 16 88 44 30 22 134 66 44 34 243 122 81 61 Ω Table 22. DDR I/O Output Buffer Impedance Parameter Symbol Test Conditions Best Case Tj = –20 °C OVDD = 1.95 V VCC = 1.3 V Typical Tj = 25 °C OVDD = 1.8 V VCC = 1.2 V Worst Case Tj = 105 °C OVDD = 1.6 V VCC = 1.1 V Unit s0–s5 000000 s0–s5 111111 s0–s5 101010 s0–s5 111111 s0–s5 111111 Output Driver Impedance Rpu Low Drive Strength, Ztl = 150 Ω Medium Drive Strength, Ztl = 75 Ω High Drive Strength, Ztl = 50 Ω, 280 140 93.4 55.2 27.6 18.4 150 75 50 50.4 34.8 23.2 90.3 45.4 32 Ω Output Driver Impedance Rpd Low Drive Strength, Ztl = 150 Ω Medium Drive Strength, Ztl = 75 Ω High Drive Strength, Ztl = 50 Ω, 293 147 87.7 32.8 16.4 11 131 65.6 43.8 48.8 22 14.6 72 36 24.3 Ω |
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