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HD64F36049 Datasheet(PDF) 103 Page - Renesas Technology Corp |
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HD64F36049 Datasheet(HTML) 103 Page - Renesas Technology Corp |
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103 / 562 page ![]() Section 5 Clock Pulse Generators Rev. 3.00 Mar. 15, 2006 Page 71 of 526 REJ09B0060-0300 Table 5.1 Crystal Resonator Parameters Frequency (MHz) 2 4 8 10 16 20 R S (max.) 500 Ω 120 Ω 80 Ω 60 Ω 50 Ω 40 Ω C 0 (max.) 7 pF 7 pF 7 pF 7 pF 7 pF 7 pF 5.1.2 Connecting Ceramic Resonator Figure 5.5 shows a typical method of connecting a ceramic resonator. OSC 1 OSC 2 C 1 C 2 C 1 = 5 to 30pF C 2 = 5 to 30pF Figure 5.5 Typical Connection to Ceramic Resonator 5.1.3 External Clock Input Method Connect an external clock signal to pin OSC 1, and leave pin OSC2 open. Figure 5.6 shows a typical connection. The duty cycle of the external clock signal must be 45 to 55%. OSC 1 External clock input OSC 2 Open Figure 5.6 Example of External Clock Input |
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