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SPC5705BEMLLR 데이터시트(PDF) 46 Page - Freescale Semiconductor, Inc |
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SPC5705BEMLLR 데이터시트(HTML) 46 Page - Freescale Semiconductor, Inc |
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46 / 92 page ![]() MPC5607B Microcontroller Data Sheet, Rev. 3 Preliminary—Subject to Change Without Notice Electrical characteristics Freescale Semiconductor 46 l Figure 13. Equivalent circuit of a quartz crystal Table 32. Crystal motional characteristics1 1 The crystal used is Epson Toyocom MC306. Symbol Parameter Conditions Value Unit Min Typ Max Lm Motional inductance — — 11.796 — KH Cm Motional capacitance — — 2 — fF C1/C2 Load capacitance at OSC32K_XTAL and OSC32K_EXTAL with respect to ground2 2 This is the recommended range of load capacitance at OSC32K_XTAL and OSC32K_EXTAL with respect to ground. It includes all the parasitics due to board traces, crystal and package. —18 — 28 pF Rm 3 3 Maximum ESR (R m) of the crystal is 50 kΩ Motional resistance AC coupled @ C0 = 2.85 pF4 4 C0 Includes a parasitic capacitance of 2.0 pF between OSC32K_XTAL and OSC32K_EXTAL pins —— 65 kW AC coupled @ C0 = 4.9 pF4 —— 50 AC coupled @ C0 = 7.0 pF4 —— 35 AC coupled @ C0 = 9.0 pF4 —— 30 C0 C2 C1 C2 Rm C1 Lm Cm Crystal |
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