Touch screen controllers are data converters which convert user actions on a screen to signals that can be read by a device. These controllers plug into sensors that communicate touch actions electronically, enabling the use of a touch screen device as an input mechanism in place of a mouse or keypad.
What are touch screen controllers used for? Touch screen controllers are used in ATMs and point of sale equipment as well as in smart technology devices such as tablets, mobile phones, laptops and Kindles. Touch screen controllers are also standard in the manufacturing and engineering industries where display screens act as control panels for machinery and specialised equipment.
Types of touch screen controllers Touch screen controllers come in two types: capacitive and resistive.
Capacitive touch screen controllers are compatible with screen panels coated with indium tin dioxide. The film coating conducts a constant electrical current across a sensor to pick up on any change in electrical charge when the screen is touched.
Resistive touch screen controllers produce an electrically resistive layer. The changes in resistance on this layer are identified as touch events, which are picked up by the controller for processing of data.
Description:
A range of Programmable System-on-chip (PSoC®) products from
Cypress Semiconductor incorporating analogue sub-systems with capacitive sensing hardware. These configurable devices include an on-board MCU and are aimed primarily at capacitive touch screen applications.
Description:
A range of Programmable System-on-chip (PSoC®) products from
Cypress Semiconductor incorporating analogue sub-systems with capacitive sensing hardware. These configurable devices include an on-board MCU and are aimed primarily at capacitive touch screen applications.
Description:
BU21025GUL is a low power 4-wire resistive touchscreen
controller. BU21025GUL measures coordinates and touch pressures with a 12bit A/D converter.BU21025GUL has a digital filter for noise reduction. 4-wire resistive touch screen controllerSingle 1.65V to 3.60V supply.Low standby current ( 0.8uA max)12bit SAR A/D converter2-wire serial interfaceCommand base interfaceDigital filterTouch pressure ...
Description:
BU21027MUV supports 2points coordinate at the 4-wire resistive
touch screen. Introduction of 2points touch detection becomes easy by automatic adjustment function. Support 4-wire resistive touch screen.Support 2 points touch detection.Automatic adjustment of parameters for 2 points touch detection.2-wire serial bus interface.Single power supply.Auto power down.(power down = sleep)Built-in clock oscillator ...
