LM8300/LM8400/LM8500 Four Wire Resistive Touchscreen Controller with Brownout PRELIMINARY October 2002 LM8300/LM8400/LM8500 Four Wire Resistive Touchscreen Controller with Brownout General Description The LM8300/8400/8500 is a 4-wire resistive touch screen controller.
The controller samples and drives the touch screen without the need of any external hardware.
The built in 10-bit A/D provides a maximum of 500 coordinate pairs per second (cpps).
The data sampled from the touch screen is sent out on the UART at a speed of 38400 bps.
The controller has a power-saving mode which causes the controller to self-power down when no touch is detected on the touch screen for a specified amount of tim...

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