DEVICE OVERVIEW The Microchip mTouchTM AR1000 Series Resistive Touch Screen Controller is a complete, easy to integrate, cost-effective and universal touch screen controller chip.
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: 2.5-5.0V ±5% • Standby Current: - 5V: 85 uA, typical; 125 uA (maximum) - 2.5V: 40 uA, typical; 60 uA (maximum) • Operating “No touch” Current: - 3.0 mA (typical) • Operating “Touch” Current: - 17 mA, typical, with a touch sensor having 200Ω layers. - Actual current is dependent on the touch sensor used • AR1011/AR1021 Brown-Out Detection (BOR) set to 2.2V. Touch Modes: • Off, Stream, Down, Up and more. Touch Sensor Support: • 4-Wire, 5-Wire and 8-Wire Analog Resistive • Lead-to-Lead Resistance: 50-2,000Ω (typical) • Layer-to-Layer Capacitance: 0-0.5 uF • Touch Sensor Time Constant: 500 us (maximum) Touch Resolution: • 10-bit Resolution (maximum) Touch Coordinate Report Rate: • 140 Reports Per Second (typical) with a Touch Sensor of 0.02 uF with 200Ω Layers • Actual Report Rate is dependent on the Touch Sensor used.
Communications: • SPI, Slave mode, p/n AR1021 • I2CTM, Slave mode, p/n, AR1021 • UART, 9600 Baud Rate, p/n AR1011 Applications The AR1000 Series is designed for high volume, small form factor touch solutions with quick time to market requirements – including, but not limited to: • Mobile communication devices • Personal Digital Assistants (PDA) • Global Positioning Systems (GPS) • Touch Screen Monitors • KIOSK • Media Players • Portable Instruments • Point of Sale Terminals
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