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H838532H датащи(PDF) 110 Page - Renesas Technology Corp |
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H838532H датащи(HTML) 110 Page - Renesas Technology Corp |
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110 / 508 page ![]() Section 4 Clock Pulse Generators Rev. 1.00 May 30, 2008 Page 90 of 484 REJ09B0436-0100 (2) Pin Connection when Not Using Subclock When the subclock is not used, connect pin X 1 to GND and leave pin X2 open, as shown in figure 4.8. X X 1 2 GND Open Figure 4.8 Pin Connection when not Using Subclock (3) External Clock Input Connect pin X 1 to GND and leave pin X2 open. Input an external clock to pin EXCL. Set bit EXCL in register PMR2 to 1 to supply the external clock to the internal components of the device. A connection example is shown in figure 4.9. X1 P31/UD/EXCL External clock input X2 Open GND Figure 4.9 Pin Connection when Inputting External Clock Frequency Subclock ( φw) Duty 45% to 55% |
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