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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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HD6433637SW Scheda tecnica(PDF) 94 Page - Renesas Technology Corp |
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HD6433637SW Scheda tecnica(HTML) 94 Page - Renesas Technology Corp |
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94 / 418 page  80 4.2 System Clock Generator Clock pulse can be supplied to the system clock divider either by connecting a crystal or ceramic oscillator, or by providing external clock input. Connecting a Crystal Oscillator: Figure 4.2 shows a typical method of connecting a crystal oscillator. 1 2 C1 C2 OSC OSC R = 1 M ±20% C = C = 12 pF ±20% f 12 Ω Rf Figure 4.2 Typical Connection to Crystal Oscillator Figure 4.3 shows the equivalent circuit of a crystal oscillator. An oscillator having the characteristics given in table 4.1 should be used. CS C0 RS OSC1 OSC2 LS Figure 4.3 Equivalent Circuit of Crystal Oscillator Table 4.1 Crystal Oscillator Parameters Frequency 2 MHz 4 MHz 8 MHz 10 MHz R S (max) 500 Ω 100 Ω 50 Ω 30 Ω C 0 (max) 7 pF 7 pF 7 pF 7 pF |
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