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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATmega325P датащи(PDF) 238 Page - ATMEL Corporation |
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ATmega325P датащи(HTML) 238 Page - ATMEL Corporation |
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238 / 364 page  238 8023F–AVR–07/09 ATmega325P/3250P Table 23-4. Boundary-scan Signals for the ADC (1) Signal Name Direction as seen from the ADC Description Recommende d Input when not in use Output Values when recommended inputs are used, and CPU is not using the ADC COMP Output Comparator Output 0 0 ACLK Input Clock signal to differential amplifier implemented as Switch-cap filters 00 ACTEN Input Enable path from differential amplifier to the comparator 00 ADCBGEN Input Enable Band-gap reference as negative input to comparator 00 ADCEN Input Power-on signal to the ADC 0 0 AMPEN Input Power-on signal to the differential amplifier 0 0 DAC_9 Input Bit 9 of digital value to DAC 1 1 DAC_8 Input Bit 8 of digital value to DAC 0 0 DAC_7 Input Bit 7 of digital value to DAC 0 0 DAC_6 Input Bit 6 of digital value to DAC 0 0 DAC_5 Input Bit 5 of digital value to DAC 0 0 DAC_4 Input Bit 4 of digital value to DAC 0 0 DAC_3 Input Bit 3 of digital value to DAC 0 0 DAC_2 Input Bit 2 of digital value to DAC 0 0 DAC_1 Input Bit 1 of digital value to DAC 0 0 DAC_0 Input Bit 0 of digital value to DAC 0 0 EXTCH Input Connect ADC channels 0 - 3 to by-pass path around differential amplifier 11 GNDEN Input Ground the negative input to comparator when true 00 HOLD Input Sample & Hold signal. Sample analog signal when low. Hold signal when high. If differential amplifier are used, this signal must go active when ACLK is high. 11 IREFEN Input Enables Band-gap reference as AREF signal to DAC 00 MUXEN_7 Input Input Mux bit 7 0 0 MUXEN_6 Input Input Mux bit 6 0 0 MUXEN_5 Input Input Mux bit 5 0 0 MUXEN_4 Input Input Mux bit 4 0 0 MUXEN_3 Input Input Mux bit 3 0 0 MUXEN_2 Input Input Mux bit 2 0 0 MUXEN_1 Input Input Mux bit 1 0 0 MUXEN_0 Input Input Mux bit 0 1 1 |
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