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products:w7100a:io_ports

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products:w7100a:io_ports [2013/11/28 01:10]
joachim
products:w7100a:io_ports [2015/03/16 10:33] (current)
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 {{:​products:​w7100a:​w7100a_port-pin_003.jpg?​direct|}} {{:​products:​w7100a:​w7100a_port-pin_003.jpg?​direct|}}
  
-The GPIO of the **W7100A** MCU has three operating modes '​Pull-up',​ '​Pull-down'​ and '​Keep'​ according to  +The GPIO of the **W7100A** MCU has fife operating modes, '​active low', 'high Z', ​'​Pull-up',​ '​Pull-down'​ and '​Keep'​ according to the SFR values. The output driver is a simple open drain stage and not a Push-Pull output. Therefore a low-impedant '​high'​ to the output must be performed with the internal 4k7 pull-up resistor.\\
-the SFR value. The output driver is a simple open drain stage and not a Push-Pull output. Therefore a low-impedant '​high'​ to the output must be performed with the internal 4k7 pull-up resistor.\\+
  
 With the port registers Px the direction (in or out) of the port pins is selected. \\ With the port registers Px the direction (in or out) of the port pins is selected. \\
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 The '​Keep'​ mode can be made by setting up both pull-up and pull-down register simultaneously. \\ The '​Keep'​ mode can be made by setting up both pull-up and pull-down register simultaneously. \\
-The GPIO keeps its previous value in the '​Keep'​ operating mode. \\+The GPIO port register ​keeps its previous value in the '​Keep'​ operating mode until leaving Keep-Mode.\\
  
 The I/O port pin functionalities are described in the following table: \\ The I/O port pin functionalities are described in the following table: \\
products/w7100a/io_ports.txt · Last modified: 2015/03/16 10:33 (external edit)