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7733 Datasheet(PDF) 156 Page - Renesas Technology Corp |
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7733 Datasheet(HTML) 156 Page - Renesas Technology Corp |
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156 / 940 page  TIMER A 7733 Group User’s Manual 6–45 6.6.2 Count source In the PWM mode, by the count source selection bits (bits 7 and 6 at addresses 5616 to 5A16), a count source can be selected. Table 6.6.2 lists the relationship between the count source selection bits and count source. Table 6.6.2 Relationship between count source selection bits and count source 6.6 Pulse width modulation (PWM) mode Frequency of count source When system clock = 25 MHz When system clock = 16 MHz When system clock = 8 MHz Count source f2 f16 f64 f512 b7 0 0 1 1 b6 0 1 0 1 Clocks f2, f16, f64, f512, and system clock: Refer to chapter “14. CLOCK GENERATING CIRCUIT.” Note: The above is applied when the system clock selection bit (bit 3 at address 6C16) = “0” and the main clock division selection bit (bit 0 at address 6F16) = “0.” (For details, refer to chapter “14. CLOCK GENERATING CIRCUIT.”) 12.5 MHz 1.5625 MHz 390.625 kHz 48.8281 kHz 8 MHz 1 MHz 250 kHz 31.25 kHz 4 MHz 500 kHz 125 kHz 15.625 kHz |
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