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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATmega328P датащи(PDF) 247 Page - ATMEL Corporation |
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ATmega328P датащи(HTML) 247 Page - ATMEL Corporation |
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247 / 448 page  247 8161D–AVR–10/09 ATmega48PA/88PA/168PA/328P . 22.3 Register Description 22.3.1 ADCSRB – ADC Control and Status Register B • Bit 6 – ACME: Analog Comparator Multiplexer Enable When this bit is written logic one and the ADC is switched off (ADEN in ADCSRA is zero), the ADC multiplexer selects the negative input to the Analog Comparator. When this bit is written logic zero, AIN1 is applied to the negative input of the Analog Comparator. For a detailed description of this bit, see ”Analog Comparator Multiplexed Input” on page 246. 22.3.2 ACSR – Analog Comparator Control and Status Register • Bit 7 – ACD: Analog Comparator Disable When this bit is written logic one, the power to the Analog Comparator is switched off. This bit can be set at any time to turn off the Analog Comparator. This will reduce power consumption in Active and Idle mode. When changing the ACD bit, the Analog Comparator Interrupt must be disabled by clearing the ACIE bit in ACSR. Otherwise an interrupt can occur when the bit is changed. • Bit 6 – ACBG: Analog Comparator Bandgap Select When this bit is set, a fixed bandgap reference voltage replaces the positive input to the Analog Comparator. When this bit is cleared, AIN0 is applied to the positive input of the Analog Compar- ator. When the bandgap referance is used as input to the Analog Comparator, it will take a Table 22-1. Analog Comparator Multiplexed Input ACME ADEN MUX2..0 Analog Comparator Negative Input 0 x xxx AIN1 1 1 xxx AIN1 1 0 000 ADC0 1 0 001 ADC1 1 0 010 ADC2 1 0 011 ADC3 1 0 100 ADC4 1 0 101 ADC5 1 0 110 ADC6 1 0 111 ADC7 Bit 7 65432 10 (0x7B) –ACME – – – ADTS2 ADTS1 ADTS0 ADCSRB Read/Write R R/W R R R R/W R/W R/W Initial Value 0 00000 00 Bit 7 654 32 10 0x30 (0x50) ACD ACBG ACO ACI ACIE ACIC ACIS1 ACIS0 ACSR Read/Write R/W R/W R R/W R/W R/W R/W R/W Initial Value 0 0 N/A 0 0 0 0 0 |
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