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AM2320 Folha de dados(PDF) 10 Page - List of Unclassifed Manufacturers |
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AM2320 Folha de dados(HTML) 10 Page - List of Unclassifed Manufacturers |
10 / 27 page Figure 11: C bus master sends the data to the machine from the basic format Figure 12: I 2 C bus master basic format for receiving data from a machine 8.2 AM2320 sensor I 2 C communication protocol AM2320 serial interface for the I 2 C bus, in full accordance with I 2 C standard protocols addressing, can be directly linked to the I 2 C bus. AM2320 sensor I 2 C address of the c(SLAVE ADDRESS) 0xB8, on the basis of I 2 C standard protocol on the bus, based on Mod Bus protocol, developed a unique communication protocol, reducing the transmission error rate. When micro controller read AM2320 sensors strict accordance with AM2320 sensor I 2 C -Mod Bus communication protocol design and timing. 8.2.1 I 2 C Interface Description AM2320 digital temperature and humidity sensor as a communication from the machine, and the host (user microprocessor) between uses the standard I 2 C bus mode. For the accurate measurement of humidity, temperature and humidity to reduce the impact of, AM2320 sensors during non-working, automatically become dormant, in order to reduce public consumption, to reduce the impact sensor self-heating of the ambient humidity values. AM2320 uses passive mode, which hosts the wake sensor by instruction, and then send the appropriate commands to read the appropriate temperature and humidity values; After the communication, the sensor triggers a temperature and humidity acquisition; Therefore, if there is no time to read the sensor, please read two consecutive second sensor (minimum interval of two reads 2s), is the latest in a second measurement; after the acquisition sensor automatically become dormant. The next time you need to read the host sensor, sensors need to reawaken. It should be noted that the host communication from start to finish, for a maximum of 3s. If communication is not completed within 3s, sensors automatically end communication, automatically become dormant again as the host read sensors, needed to re-send a wakeup command. 8.2.2 interface Features This section describes the I 2 C interface characteristics AM2320 sensor, if you want to get the - 9 - |
Nº de peça semelhante - AM2320 |
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Descrição semelhante - AM2320 |
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