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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA7569BLVPD датащи(PDF) 29 Page - STMicroelectronics |
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TDA7569BLVPD датащи(HTML) 29 Page - STMicroelectronics |
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29 / 41 page  DocID023498 Rev 9 29/41 TDA7569BLV I2C bus 40 9.3.2 Start and stop conditions As shown by Figure 40 a start condition is a HIGH to LOW transition of the SDA line while SCL is HIGH. The stop condition is a LOW to HIGH transition of the SDA line while SCL is HIGH. 9.3.3 Byte format Every byte transferred to the SDA line must contain 8 bits. Each byte must be followed by an acknowledge bit. The MSB is transferred first. 9.3.4 Acknowledge The transmitter* puts a resistive HIGH level on the SDA line during the acknowledge clock pulse (see Figure 41). The receiver** has to pull-down (LOW) the SDA line during the acknowledge clock pulse, so that the SDA line is stable LOW during this clock pulse. * Transmitter – master (μP) when it writes an address to the TDA7569BLV – slave (TDA7569BLV) when the μP reads a data byte from TDA7569BLV ** Receiver – slave (TDA7569BLV) when the μP writes an address to the TDA7569BLV – master (μP) when it reads a data byte from TDA7569BLV Figure 39. Data validity on the I2C bus Figure 40. Timing diagram on the I2C bus Figure 41. Acknowledge on the I2C bus |
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