Resistive touch screen controllers
for large volume small formfactor embedded systems
Microchip's new mTouch AR1000 Resistive Touch-Screen Controllers
with 10-bit touch resolution is suitable for high volume
small formfactor embedded system applications. This analog
resistive touch-screen controller packs built-in decoding,
filtering, and controller-driven calibration.
AR1000 controller replace old trial and error type Analog-to-Digital
Converters (ADCs) based resistive touch interface by offering
proprietary touch-screen decoding algorithms to send reliable
touch coordinates. AR1000 accepts finger, glove or stylus-pen
touch inputs.
"The AR1000 controllers give designers the flexibility
they need to quickly and easily
implement analog resistive touch-screen interfaces,"
said Steve Drehobl, vice president of Microchip's Security,
Microcontroller and Technology Development Division. "The
controllers meet the needs of today's touch solutions with
low cost and reduced development time, while delivering
the Microchip brand promises of quality, reliability and
performance."
The key features of this resistive touch controller IC
are,
4 wire, 5 wire, and 8 wire analog resistive
Serial communications ports: SPI, I2C, UART serial interfaces
128 Bytes of user EEPROM
Operating Voltage: 3.3 to 5.0 volts ±5%
Current consumption:
Standby Sleep Current: <1uA
Operating "No touch" Current: 3.0mA typ.
Operating "Touch" Current: 17mA typ
Touch Modes: Off, Stream, Down, Up, and more.
Touch Coordinate Report Rate: 140 reports per second typ.
Need only few external components of ceramic capacitors
and resistors
The range of embedded system and portable consumer electronic
products and applications suggested include consumer (mobile
communication devices, Personal Digital Assistants, Global
Positioning Systems, media players, printers), medical (patient-monitoring
equipment), industrial (kiosks, touch-screen monitors, portable
instruments, point-of-sale terminals), and automotive electronics
(navigation systems), among others.
AR1000 Development Kit with AR1000 development board and
other necessary tools and docs are available from Microchip
Package:
AR1000: 20-pin QFN, SOIC and SSOP package
Price:
AR1000: Each $1.15 for 10k pieces.
Development kit at $99.99
Availability: Now
For more details visit www.microchipdirect.com.
To know more on this product and also to learn the basics
of resistive touch panel sensing, download the datasheet
from microchip website at URL,
http://ww1.microchip.com/downloads/en/DeviceDoc/41393A.pdf
.
