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ST62T10BM3/OTP データシート(PDF) 52 Page - STMicroelectronics |
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ST62T10BM3/OTP データシート(HTML) 52 Page - STMicroelectronics |
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52 / 104 page  ST6208C/ST6209C/ST6210C/ST6220C 52/104 8.3 A/D CONVERTER (ADC) 8.3.1 Introduction The on-chip Analog to Digital Converter (ADC) pe- ripheral is a 8-bit, successive approximation con- verter. This peripheral has multiplexed analog in- put channels (refer to device pin out description) that allow the peripheral to convert the analog volt- age levels from different sources. The result of the conversion is stored in a 8-bit Data Register. The A/D converter is controlled through a Control Register. 8.3.2 Main Features s 8-bit conversion s Multiplexed analog input channels s Linear successive approximation s Data register (DR) which contains the results s End of Conversion flag s On/Off bit (to reduce consumption) s Typical conversion time 70 µs (with an 8 MHz crystal) The block diagram is shown in Figure 34. Figure 34. ADC Block Diagram Note: ADC not present on some devices. See device summary on page 1. OSC AD EAI EOC STA PDS ADCR AIN0 AIN1 ANALOG TO DIGITAL CONVERTER AINx PORT MUX ADR2 ADR1 ADR3 ADR7 ADR6 ADR5 ADR4 ADR0 ADR DIV 12 fADC fINT DDRx ORx DRx I/O PORT OFF CR3 AD CR1 AD CR0 1 |
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