LM8400 PDF File ( Datasheet )

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