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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