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Microchip Technology mTouch™ AR1000 Resistive Touch Screen Controllers

Microchip Technology mTouch™ AR1000 Resistive Touch Screen Controllers are complete, easy-to-integrate, cost-effective, universal touch screen controller chip solutions. The AR1000 Series has sophisticated proprietary touch screen decoding algorithms to process all touch data, saving the host from the processing overhead.Providing filtering capabilities beyond that of other low-cost devices, the AR1000 Series delivers reliable, validated, and calibrated touch coordinates. 

Using the on-board EEPROM, the AR1000 Touch Screen Controllers can store and independently apply the calibration to the touch coordinates before sending them to the host. This unique combination of features makes the AR1000 Series a resource-efficient touch screen controller for system designs, including embedded system integrations.

Features

  • Special Features
    • RoHS Compliant
    • Power-Saving Sleep mode
    • Industrial Temperature Range
    • Built-in Drift Compensation Algorithm
    • 128 Bytes of User EEPROM
  • Power Requirements
    • Operating Voltage: 2.5V to 5.0V ±5%
  • Standby Current:
    • 5V: 85µA, typical; 125µA (maximum)
    • 5V: 40µA, typical; 60µA (maximum)
  • Operating "No touch" Current:
    • 0mA (typical)
  • Operating "Touch" Current:
    • 17mA, typical, with a touch sensor having 200W layers
    • Actual current is dependent on the touch sensor used
  • Touch Modes
    • Off, Stream, Down, Up, and more
  • Touch Sensor Support
    • 4-Wire, 5-Wire, and 8-Wire Analog Resistive
    • Lead-to-Lead Resistance: 50W to 2000W (typical)
    • Layer-to-Layer Capacitance: 0µF to 0.5µF
    • Touch Sensor Time Constant: 500µs (maximum)
  • Touch Resolution
    • 10-bit Resolution (maximum)
  • Touch Coordinate Report Rate
    • 140 Reports Per Second (typical) with a Touch Sensor of 0.02µF with 200W Layers
    • Actual Report Rate is dependent on the Touch Sensor used
  • Communications
    • AR1020/AR1021: SPI, I2C
    • AR1010/AR1011: UART, 9600 Baud Rate
  • Package Options
    • 20-lead SSOP (5.3mm)
    • 20-lead SOIC (7.5mm)
    • 20-lead QFN (4.0mm2)

Applications

  • Mobile communication devices
  • Personal Digital Assistants (PDA)
  • Global Positioning Systems (GPS)
  • Touch Screen Monitors
  • KIOSK
  • Media Players
  • Portable Instruments
  • Point of Sale Terminals

Block Diagram

Block Diagram - Microchip Technology mTouch™ AR1000 Resistive Touch Screen Controllers
發佈日期: 2009-10-29 | 更新日期: 2022-03-11