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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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48GA004 датащи(PDF) 95 Page - Microchip Technology |
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48GA004 датащи(HTML) 95 Page - Microchip Technology |
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95 / 268 page  2010 Microchip Technology Inc. DS39881D-page 95 PIC24FJ64GA004 FAMILY 8.0 OSCILLATOR CONFIGURATION The oscillator system for PIC24FJ64GA004 family devices has the following features: • A total of four external and internal oscillator options as clock sources, providing 11 different clock modes • On-chip 4x PLL to boost internal operating frequency on select internal and external oscillator sources • Software-controllable switching between various clock sources • Software-controllable postscaler for selective clocking of CPU for system power savings • A Fail-Safe Clock Monitor (FSCM) that detects clock failure and permits safe application recovery or shutdown A simplified diagram of the oscillator system is shown in Figure 8-1. FIGURE 8-1: PIC24FJ64GA004 FAMILY CLOCK DIAGRAM Note: This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information, refer to the “PIC24F Family Reference Manual” , ”Section 6. Oscillator” (DS39700). PIC24FJ64GA004 Family Secondary Oscillator SOSCEN Enable Oscillator SOSCO SOSCI Clock Source Option for Other Modules OSCI OSCO Primary Oscillator XT, HS, EC CPU Peripherals CLKDIV<10:8> WDT, PWRT 8 MHz FRCDIV 31 kHz (nominal) FRC Oscillator LPRC Oscillator SOSC LPRC Clock Control Logic Fail-Safe Clock Monitor CLKDIV<14:12> FRC CLKO (nominal) 4 x PLL XTPLL, HSPLL ECPLL,FRCPLL 8 MHz 4 MHz |
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