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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC16F688-I/ML датащи(PDF) 67 Page - Microchip Technology |
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PIC16F688-I/ML датащи(HTML) 67 Page - Microchip Technology |
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67 / 204 page  © 2009 Microchip Technology Inc. DS41203E-page 65 PIC16F688 8.0 ANALOG-TO-DIGITAL CONVERTER (ADC) MODULE The Analog-to-Digital Converter (ADC) allows conversion of an analog input signal to a 10-bit binary representation of that signal. This device uses analog inputs, which are multiplexed into a single sample and hold circuit. The output of the sample and hold is connected to the input of the converter. The converter generates a 10-bit binary result via successive approximation and stores the conversion result into the ADC result registers (ADRESL and ADRESH). The ADC voltage reference is software selectable to either VDD or a voltage applied to the external reference pins. The ADC can generate an interrupt upon completion of a conversion. This interrupt can be used to wake-up the device from Sleep. Figure 8-1 shows the block diagram of the ADC. FIGURE 8-1: ADC BLOCK DIAGRAM RA0/AN0 A/D RA1/AN1/VREF RA2/AN2 RC0/AN4 VDD VREF ADON GO/DONE VCFG = 1 VCFG = 0 CHS VSS RC1/AN5 RC2/AN6 RC3/AN7 RA4/AN3 ADRESH ADRESL 10 10 ADFM 0 = Left Justify 1 = Right Justify 000 001 010 011 100 101 110 111 |
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