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ST7LITE49M Datasheet(PDF) 128 Page - STMicroelectronics |
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ST7LITE49M Datasheet(HTML) 128 Page - STMicroelectronics |
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128 / 188 page  On-chip peripherals ST7LITE49M 128/188 11.5 10-bit A/D converter (ADC) 11.5.1 Introduction The on-chip Analog to Digital Converter (ADC) peripheral is a 10-bit, successive approximation converter with internal sample and hold circuitry. This peripheral has up to 10 multiplexed analog input channels (refer to device pin out description) that allow the peripheral to convert the analog voltage levels from up to 7 different sources. The result of the conversion is stored in a 10-bit Data register. The A/D converter is controlled through a Control/Status register. 11.5.2 Main Features ● 10-bit conversion ● Up to 7 channels with multiplexed input ● Linear successive approximation ● Data register (DR) which contains the results ● Conversion complete status flag ● On/off bit (to reduce consumption) The block diagram is shown in Figure 59. 11.5.3 Functional description Analog power supply VDDA and VSSA are the high and low level reference voltage pins. In some devices (refer to device pin out description) they are internally connected to the VDD and VSS pins. Conversion accuracy may therefore be impacted by voltage drops and noise in the event of heavily loaded or badly decoupled power supply lines. |
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