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ATtiny43U датащи(PDF) 115 Page - ATMEL Corporation |
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ATtiny43U датащи(HTML) 115 Page - ATMEL Corporation |
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115 / 182 page ![]() 115 8048B–AVR–03/09 16. Analog to Digital Converter 16.1 Features • 10-bit Resolution • 1 LSB Integral Non-linearity • ± 2 LSB Absolute Accuracy • 13µs Conversion Time • 15 kSPS at Maximum Resolution • Four Multiplexed Single Ended Input Channels • Temperature Sensor Input Channel • Optional Left Adjustment for ADC Result Readout • 0 - V CC ADC Input Voltage Range • 1.1V ADC Reference Voltage • Free Running or Single Conversion Mode • ADC Start Conversion by Auto Triggering on Interrupt Sources • Interrupt on ADC Conversion Complete • Sleep Mode Noise Cancele 16.2 Overview ATtiny43U features a 10-bit, successive approximation Analog-to-Digital Converter (ADC). A block diagram of the ADC is shown in Figure 16-1. Figure 16-1. Analog to Digital Converter Block Schematic ADMUX ADMUX DECODER DECODER 8-BIT DATA BUS ADCSRA ADCSRA ADCH+ADCL ADCH+ADCL TRIGGER TRIGGER SELECT SELECT PRESCALER PRESCALER CONVERSION LOGIC CONVERSION LOGIC 10-BIT DAC 10-BIT DAC ADCSRB ADCSRB - + ADC3 ADC3 ADC2 ADC2 ADC1 ADC1 ADC0 ADC0 VCC CC INPUT INPUT MUX MUX ADC IRQ ADC IRQ SAMPLE & HOLD SAMPLE & HOLD COMPARATOR COMPARATOR VBAT VBAT 1/2 1/2 INTERNAL INTERNAL REFERENCE REFERENCE TEMPERATURE TEMPERATURE SENSOR SENSOR AGND ADC MUX OUTPUT ADC MUX OUTPUT |
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