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3819 Datasheet(PDF) 121 Page - Renesas Technology Corp |
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3819 Datasheet(HTML) 121 Page - Renesas Technology Corp |
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121 / 218 page  107 2. APPLICATION MITSUBISHI MICROCOMPUTER 3819 Group 2.4 A-D conversion 3819 Group USER’S MANUAL 2.4.2 A-D conversion application example Conversion of Analog input voltage Outline : The analog input voltage input from the sensor is converted into digital values. Figure 2.4.5 shows a connection diagram, and Figure 2.4.6 shows a setting of related registers. Fig. 2.4.5 Connection diagram [Conversion of Analog input voltage] Specifications : • The AN0 pin is used as an analog input pin. • The analog input voltage input from the sensor is converted into digital values. Fig. 2.4.6 Setting of related registers [Conversion of Analog input voltage] 0 Analog input pin selection : P70/AN0 ADCON AD/DA control register (Address:2C16) 0 0 0 Start A-D conversion P70/AN0 3819 group Sensor VREF AVSS VCC VSS Store a result of A-D conversion AD A-D conversion register (Address:2D16) (read-only) Note : Read out a result of A-D conversion after bit 4 of the AD/DA control register (ADCON) is set to “1”. |
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