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MCIMX25 Datasheet(PDF) 38 Page - Freescale Semiconductor, Inc |
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MCIMX25 Datasheet(HTML) 38 Page - Freescale Semiconductor, Inc |
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38 / 140 page  i.MX25 Applications Processor for Automotive Products, Rev. 8 38 Freescale Semiconductor Note: 1. Maximum condition for tpr, tpo, tpi, and tpv: wcs model, 1.1 V, I/O 3.0 V, and 105 °C. Minimum condition for tpr, tpo, and tpv: bcs model, 1.3 V, I/O 3.6 V and –40 °C. Input transition time from core is 1 ns (20%–80%). 2. Minimum condition for tps: wcs model, 1.1 V, I/O 3.0 V, and 105 °C. tps is measured between VIL to VIH for rising edge and between VIH to VIL for falling edge. 3. Maximum condition for tdit: bcs model, 1.3 V, I/O 3.6 V, and –40 °C. 4. Maximum condition for tpi and trfi: wcs model, 1.1 V, I/O 3.0 V and 105 °C. Minimum condition for tpi and trfi: bcs model, 1.3 V, I/O 3.6 V and –40 °C. Input transition time from pad is 5 ns (20%–80%). Table 28 shows AC parameters for SDRAM pbijtov18_33_ddr_clk I/O. Output pad slew rate (max. drive) tps 25 pF 50 pF 1.11/1.20 0.97/0.65 1.74/1.75 0.92/0.94 2.42/2.46 1.39/1.30 V/ns 2 Output pad slew rate (high drive) tps 25 pF 50 pF 0.76/0.80 0.40/0.43 1.16/1.19 0.61/0.63 1.76/1.66 0.93/0.87 V/ns Output pad slew rate (standard drive) tps 25 pF 50 pF 0.38/0.41 0.20/0.22 0.59/0.60 0.31/0.32 0.89/0.82 0.47/0.43 V/ns Output pad dI/dt (max. drive) tdit 25 pF 50 pF 89 94 198 209 398 421 mA/ns 3 Output pad dI/dt (high drive) tdit 25 pF 50 pF 59 62 132 139 265 279 mA/ns Output pad dI/dt (standard drive) tdit 25 pF 50 pF 29 31 65 69 132 139 mA/ns Input pad transition times trfi 1.0 pF 0.07/0.08 0.11/0.12 0.16/0.20 ns 4 Input pad propagation delay, 50%–50% tpi 1.0 pF 0.35/1.17 0.63/1.53 1.16/2.04 ns Input pad propagation delay, 40%–60% tpi — 1.18/1.99 1.45/2.35 1.97/2.85 — Table 28. AC Parameters for SDRAM pbijtov18_33_ddr_clk I/O Parameter Symbol Load Condition Min. Rise/Fall Typ. Max. Rise/Fall Units Notes Duty cycle Fduty — 40 50 60 % — Clock frequency f — — — 133 MHz 1 Output pad transition times (max. drive) tpr 25 pF 50 pF 0.82/0.87 1.56/1.67 1.14/1.13 2.13/2.09 1.62/1.50 3.015/2.7 7 ns 1 Output pad transition times (high drive) tpr 25 pF 50 pF 1.23/1.31 2.31/2.47 1.71/1.68 3.22/3.12 2.39/2.22 4.53/4.16 ns Output pad transition times (standard drive) tpr 25 pF 50 pF 2.44/2.60 4.65/4.99 3.38/3.27 6.38/6.23 4.73/4.38 9.05/8.23 ns Table 27. AC Parameters for SDRAM I/O (continued) Parameter Symbol Load Condition Min. Rise/Fall Typ. Max. Rise/Fall Units Notes |
Similar Part No. - MCIMX25_11 |
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Similar Description - MCIMX25_11 |
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