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SPC574K72E5 데이터시트(PDF) 49 Page - STMicroelectronics |
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SPC574K72E5 데이터시트(HTML) 49 Page - STMicroelectronics |
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49 / 127 page ![]() DocID023601 Rev 5 49/127 SPC574Kxx Electrical characteristics 126 Figure 11. Crystal/Resonator Connections Crystal or Resonator EXTAL XTAL On chip Off chip Cy Cx vsssyn 8-40MHz EXTERNAL OSCILLATOR (XOSC) DRIVER Table 25. Selectable load capacitance load_cap_sel[4:0] from DCF record Capacitance offered on EXTAL/XTAL (Cx and Cy)(1),(2) (pF) 00000 1.0 00001 2.0 00010 2.9 00011 3.8 00100 4.8 00101 5.7 00110 6.6 00111 7.5 01000 8.5 01001 9.4 01010 10.3 01011 11.2 01100 12.2 01101 13.1 01110 14.0 01111 15.0 10000–11111(3) Reserved 1. Values are determined from simulation across process corners and voltage and temperature variation. Capacitance values vary ±12% across process, 0.25% across voltage, and no variation across temperature. |
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