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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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L9805 Datenblatt(PDF) 58 Page - STMicroelectronics |
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L9805 Datenblatt(HTML) 58 Page - STMicroelectronics |
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58 / 103 page  58/103 L9805 5.5.7 Register Description CONTROL/STATUS REGISTER (ADCCSR) Address: 0072h — Read/Write Reset Value: 0010 0000 (20h) Bit 7,6 = Reserved Bit 5 =COCO (Read Only) Conversion Complete COCO is set (by the ADC) as soon as a conver- sion is completed (results can be read). COCO is cleared by setting ADST=1 (start of new conver- sion). If COCO=0 a conversion is running, if CO- CO=1 no conversion is running. Bit 4 = ADIE A/D Interrupt Enable This bit is used to enable / disable the interrupt function: 0: interrupt disabled 1: interrupt enabled Bit 3= Reserved Bit 2= ADST Start Conversion When this bit is set a new conversion starts. ADST is automatically reset when the conversion is com- pleted (COCO=1). Bits 1-0 = CH1-CH0 Channel Selection These bits select the analog input to convert. See Table 10 for reference. Table 10. ADC Channel Selection Table DATA REGISTER HIGH (ADCDRH) Address: 0070h — Read Only Reset Value: 00000 0000 (00h) Bit 1:0 = AD9-AD8 Analog Converted Value This register contains the high part of the convert- ed analog value DATA REGISTER LOW (ADCDRL) Address: 0071h — Read Only Reset Value: 00000 0000 (00h) Bit 7:0 = AD7-AD0 Analog Converted Value This register contains the low part of the converted analog value 70 00 COCO ADIE 0 ADST CH1 CH0 CH1 CH0 Channel 0 0 AD1, Temperature Sensor 0 1 AD2, external input 1 0 AD3, external input 1 1 AD4, external input 70 0000 00 AD9 AD8 70 AD7AD6 AD5AD4 AD3AD2 AD1 AD0 |
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