Atmel Corporation - Touchscreens
Atmel maXTouch touchscreen controllers combine Atmel's patented Charge Transfer and either
8/16-bit or 32-bit Atmel AVR® microcontroller technology to provide unlimited touch (up to 16 touches), fast
response time, and smart processing of a capacitive touch image, accurately regenerating and reporting the user's
interaction with the touchscreen. Multitouch performance identifies and individually tracks touches, and allows a
range of built-in gestures to be reported to the host processor.
A high signal-to-noise ratio (SNR) enables the device to work well with fingertip touch as well as with a conductive
stylus. It has been designed to work in demanding, rapidly changing environments, and with only the touchscreen area
being touch-sensitive allows design freedom to place the chip on the main board or adjacent to the sensor. Only the
touchscreen area is touch-sensitive, allowing designers the freedom to place the chip on the main board or adjacent
to the sensor.
The advanced mXT616 and mXT1386 devices offer a high-performance architecture with a fast response time of >150Hz.
They support grip suppression and palm rejection, giving users a more intuitive user experience.
- The mXT224 is a 224-node, single-chip, highly configurable controller suitable for mobile-phone-size touch
screens up to 10.2 inches.
- The mXT616 is a 616-node, 3-chip, 32-bit controller suitable for tablet PCs, mobile Internet devices,
smartbooks, and PCs with touchscreens up to 10.1-inches.
- The mXT1386 is a 1386-node, 4-chip, 32-bit controller suitable for tablet PCs, mobile Internet devices,
smartbooks, and PCs with touchscreens up to 15.6-inches.