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PIC16F1508TESSQTO 데이터시트(PDF) 135 Page - Microchip Technology |
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PIC16F1508TESSQTO 데이터시트(HTML) 135 Page - Microchip Technology |
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135 / 384 page ![]() 2011 Microchip Technology Inc. Preliminary DS41609A-page 135 PIC16(L)F1508/9 15.0 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 (ADRESH:ADRESL register pair). Figure 15-1 shows the block diagram of the ADC. The ADC voltage reference is software selectable to be either internally generated or externally supplied. The ADC can generate an interrupt upon completion of a conversion. This interrupt can be used to wake-up the device from Sleep. FIGURE 15-1: ADC BLOCK DIAGRAM VDD VREF+ ADPREF = 10 ADPREF = 00 FVR Buffer1 Note 1: When ADON = 0, all multiplexer inputs are disconnected. ADON GO/DONE VSS ADC 00000 00001 00010 00011 00100 00101 00111 00110 CHS<4:0> AN0 VREF+/AN1 AN2 AN4 AN5 AN6 AN7 AN3 11111 ADRESH ADRESL 10 16 ADFM 0 = Left Justify 1 = Right Justify DAC 11110 VREF- = VSS VREF+ 11101 Temp Indicator Reserved 11100 Reserved 01100 01000 01001 01011 01010 AN8 AN9 AN10 AN11 |
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