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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC12F1822-I/MF датащи(PDF) 149 Page - Microchip Technology |
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PIC12F1822-I/MF датащи(HTML) 149 Page - Microchip Technology |
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149 / 398 page  2010 Microchip Technology Inc. Preliminary DS41413A-page 149 PIC12F/LF1822/16F/LF1823 16.4 DAC Voltage Reference Output The DAC can be output to the DACOUT pin by setting the DACOE bit of the DACCON0 register to ‘1’. Selecting the DAC reference voltage for output on the DACOUT pin automatically overrides the digital output buffer and digital input threshold detector functions of that pin. Reading the DACOUT pin when it has been configured for DAC reference voltage output will always return a ‘0’. Due to the limited current drive capability, a buffer must be used on the DAC voltage reference output for external connections to DACOUT. Figure 16-3 shows an example buffering technique. FIGURE 16-2: DIGITAL-TO-ANALOG CONVERTER BLOCK DIAGRAM DACR<4:0> R VREF- R R R R R R 32 DAC DACOUT 5 (To Comparator, CSM and ADC Modules) DACOE VDD VREF+ DACPSS<1:0> 2 DACEN Steps Digital-to-Analog Converter (DAC) FVR BUFFER2 R VSRC- VSRC+ VSS DACLPS |
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