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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DS1721 датащи(PDF) 13 Page - Maxim Integrated Products |
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DS1721 датащи(HTML) 13 Page - Maxim Integrated Products |
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13 / 17 page  DS1721 13 of 17 SAMPLE COMMAND SEQUENCE Table 6 Example: Bus master programs the DS1721 for 11-bit conversions in the continuous mode with an active low state for the thermostat output. It then programs TH=50°C and TL=45°C and starts temperature conversions. BUS MASTER MODE DS1721 MODE DATA (MSB FIRST) COMMENTS TX RX START Bus Master initiates a START condition TX RX <address, 0> Bus Master sends DS1721 address; R/ W = 0 RX TX ACK DS1721 generates acknowledge bit TX RX ACh Bus Master sends access configuration protocol RX TX ACK DS1721 generates acknowledge bit TX RX 08h Bus Master programs configuration register as described above. This will also clear thermostat flags RX TX ACK DS1721 generates acknowledge bit TX RX START Bus Master Initiates a REPEATED START condition TX RX <address, 0> Bus Master sends DS1721 address; R/ W = 0 RX TX ACK DS1721 generates acknowledge bit TX RX A1h Bus Master sends access TH protocol RX TX ACK DS1721 generates acknowledge bit TX RX 32h Bus Master writes MSB of TH (50°C) RX TX ACK DS1721 generates acknowledge bit TX RX 00h Bus Master writes LSB of TH (50°C) RX TX ACK DS1721 generates acknowledge bit TX RX START Bus Master initiates a REPEATED START condition TX RX <address, 0> Bus Master sends DS1721 address; R/ W = 0 RX TX ACK DS1721 generates acknowledge bit TX RX A2h Bus Master sends access TL protocol RX TX ACK DS1721 generates acknowledge bit TX RX 2Dh Bus Master writes MSB of TL (45°C) RX TX ACK DS1721 generates acknowledge bit TX RX 00h Bus Master writes LSB of TL (45°C) RX TX ACK DS1721 generates acknowledge bit TX RX START Bus Master initiates a REPEATED START condition TX RX <address, 0> Bus Master sends DS1721 address; R/ W = 0 RX TX ACK DS1721 generates acknowledge bit TX RX 51h Bus Master sends start convert protocol RX TX ACK DS1721 generates acknowledge bit TX RX STOP Bus Master initiates STOP condition |
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