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