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DM385 데이터시트(PDF) 136 Page - Texas Instruments |
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DM385 데이터시트(HTML) 136 Page - Texas Instruments |
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136 / 281 page ![]() DM385, DM388 SPRS821D – MARCH 2013 – REVISED DECEMBER 2013 www.ti.com 7.2.9.2 Digital Recommended capacitors for power supply decoupling are all 0.1uF in the smallest body size that can be used. Capacitors are more effective in the smallest physical size to limit lead inductance. For example, 0201 sized capacitors are better than 0402 sized capacitors, and so on. TI recommends using capacitors no larger than 0402. Place at least one capacitor for every two power pins. For those power pins that have only one pin, a capacitor is still required. Place one bulk (10 uF or larger) capacitor for every 10 or so power pins as closely as possible to the chip. These larger caps do not need to be under the chip footprint. Pay special attention not to put so much capacitance on the supply that it slows the start-up voltage ramp enough to change the power sequencing order. Also be sure to verify that the main chip reset is low until after all supplies are at their correct voltage and stable. DDR peripheral related supply capacitor numbers are provided in Section 8.13, DDR2/DDR3/DDR3L Memory Controller. 136 Power, Reset, Clocking, and Interrupts Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: DM385 DM388 |
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