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AM2320 Folha de dados(PDF) 5 Page - List of Unclassifed Manufacturers |
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AM2320 Folha de dados(HTML) 5 Page - List of Unclassifed Manufacturers |
5 / 27 page 2 SDA Serial data, bidirectional port 3 GND Ground 4 SCL Serial clock input port (single bus ground) 7.2 Power supply pin (VDD GND) AM2320 supply voltage range of 3.1V - 5.5V. 7.3 Serial clock input (SCL) The SCL pin is used to communicate the choice and I 2 C sensor communication clock line. When the power is held low while SCL remains low even 500ms, which means that the user selects a single bus mode of communication, otherwise I 2 C communications; After selecting the formula mode during power, sensor communication mode remains unchanged; If you want to change communication, re-power on, press the select operation requires communication. When choosing the I 2 C communication between microprocessor and AM2320,SCL for the synchronous communication. 7.4 Serial data(SDA) SDA pin is three-state structure for reading, writing sensor data. Detailed Description of specific communication sequence, see communication method.. 8. I 2 C and a single bus AM2320 serial interface, and power consumption reading sensor signal aspects are optimized processing. Sensor uses a single bus, I 2 C outputs two communication modes, communication can be switched freely, easy to use. SCL bus signal line to level when power to determine their bus communication: SCL is held low on power as a single bus communication mode; SCL remain high when compared to the power of communication modes I 2 C. Single bus is fully compatible with the company's other products, single-bus communication; I 2 C communication in accordance with standard protocols addressing, can be directly linked to the I 2 C bus (the bus is only allowed to hang a product), without additional wiring, operation simple. Read AM2320 sensors, strictly in accordance with the agreement of the two communication methods and timing proceed. Specific details see single communication protocol and I 2 C bus communication protocol detailed. 8.1 I 2 C standard communication protocol introduced 8.1.1 I 2 introduction to C-bus Another form of AM2320 processor and micro controller interface is I 2 C serial bus, in this brief introduction about the I 2 C bus protocol standards. Due to space limitations, can’t list all the contents of the agreement deeper questions, please consult the relevant information (refer to the Philips website access). 8.1.2 I 2 C Bus Overview Philips (Philips) at 20 years ago invented a simple two-wire bidirectional serial communication bus, the bus is called the Inter-I 2 C bus. Currently I 2 C bus has become the industry standard solution for embedded application, is widely used in a variety of professional-based micro controller, - 4 - |
Nº de peça semelhante - AM2320 |
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Descrição semelhante - AM2320 |
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