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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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R8C датащи(PDF) 27 Page - Renesas Technology Corp |
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R8C датащи(HTML) 27 Page - Renesas Technology Corp |
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27 / 199 page  R8C/10 Group Rev.1.20 Jan 27, 2006 page 17 of 180 REJ09B0019-0120 • CPU clock source • Peripheral function clock source Use of clock Main clock oscillation circuit Item Clock frequency 0 to 16 MHz • Ceramic resonator • Crystal oscillator Usable oscillator XIN, XOUT(1) Pins to connect oscillator Present Stopped Oscillator status after reset Externally derived clock can be input Other On-chip oscillator • CPU clock source • Peripheral function clock source • CPU and peripheral function clock sources when the main clock stops oscillating About 125 kHz Present Oscillating NOTES: 1. Can be used as P46 and P47 when the on-chip oscillator clock is used for CPU clock while the main clock oscillation circuit is not used. • CPU and peripheral function clock sources when the main clock stops oscillating (Note 1) Oscillation starts and stops 6. Clock Generation Circuit The clock generation circuit contains two oscillator circuits as follows: • Main clock oscillation circuit • On-chip oscillator (with oscillation stop detection function) Table 6.1 lists the clock generation circuit specifications. Figure 6.1 shows the clock generation circuit. Figures 6.2 and 6.3 show the clock-related registers. Table 6.1 Clock Generation Circuit Specifications 6. Clock Generation Circuit |
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