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ULCD-144(GFX) Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers |
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ULCD-144(GFX) Datasheet(HTML) 6 Page - List of Unclassifed Manufacturers |
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6 / 18 page /642/6/ULCD-144(GFX).png) µLCD-144(GFX) Data Sheet Dallas 1-Wire: The Dallas 1-Wire protocol is a form of serial communications designed to operate over a single data line plus ground reference. Multiple 1-Wire devices can be attached to the same shared data line to network many devices. One wire device support is available on both the IO1 and the IO2 pins on the μLCD-144(GFX) module. The diagram below depicts a typical 1-Wire temperature sensor interface. Sound Output: The μLCD-144(GFX) module is capable of generating complex sounds and RTTTL tunes from its IO1 and IO2 pins. A simple speaker circuit as shown below can be utilised. Joystick - Multi Switch: Multiple buttons or a multi-switch Joystick can be connected to the IO1 pin on the μLCD-144(GFX) module. Up to 5 buttons or a 5 position multi- switch joystick connects to a junction of a resistor ladder network that forms a voltage divider. The A/D converter of the IO1 pin internally reads the analogue value and decodes it accordingly. This feature is supported by dedicated 4DGL library functions. The following diagrams indicate how to connect up to 5 individual buttons or a multi- switch joystick to the IO1 pin. Unused buttons do not need resistors to be connected to the circuit. Table below lists the buttons and corresponding resistor values. Number of Buttons Button Number Resistor Value 1 SW1 22K 2 SW2 10K 3 SW3 4.7K 4 SW4 2.2K 5 SW5 1.2K © 2011 4D Systems www.4dsystems.com.au Page 6 of 18 |
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