TSC2200

· 4-WIRE TOUCH SCREEN INTERFACE AND 4-BY-4 KEYPAD INTERFACE
· RATIOMETRIC CONVERSION
· SINGLE 2.7V TO 3.6V SUPPLY
· SERIAL INTERFACE
· INTERNAL DETECTION OF SCREEN TOUCH AND KEYPAD
· PROGRAMMABLE 8-, 10-, OR 12-BIT RESOLUTION
· PROGRAMMABLE SAMPLING RATES
· DIRECT BATTERY MEASUREMENT (0.5V to 6V)
· ON-CHIP TEMPERATURE MEASUREMENT
· TOUCH-PRESSURE MEASUREMENT
· FULL POWER-DOWN CONTROL
· TSSOP-28 AND QFN-32 PACKAGES

VDD to GND ................................................................. 0.3V to +6.0V
VBAT Input Voltage to GND ......................................... 0.3V to +6.0V
Analog Input Voltage to GND (except VBAT) ....... 0.3V to VDD + 0.3V
Digital Input Voltage to GND ................................0.3V to VDD + 0.3V
Operating Temperature Range ........................ ..  .40°C to +105°C
Storage Temperature Range .................................65°C to +150°C
Junction Temperature (TJ Max) .............................................. +150°C
TSSOP Package
    Power Dissipation ................................................ (TJ Max TA)/JA
    _JA Thermal Impedance ...................................................... 90°C/W
Lead Temperature, Soldering
    Vapor Phase (60s) .........................................................  .. +215°C
    Infrared (15s) .................................................................. .. +220°C
NOTE:
(1) Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. Exposure to absolute maximum conditions for extended periods may affect device reliability.

The TSC2200 is a complete PDA analog interface circuit. It contains a complete 12-bit, Analog-to-Digital (A/D) resistive touch screen converter including drivers, the control to measure touch pressure, keyboard controller, and an 8-bit Digitalto- Analog (D/A) converter output for LCD contrast control.

The TSC2200 interfaces to the host controller through a standard SPI™ serial interface. The TSC2200 offers programmable resolution and sampling rates from 8- to 12-bits and up to 125kHz to accommodate different screen sizes.

The TSC2200 also offers two battery-measurement inputs capable of reading battery voltages up to 6V, while operating at only 2.7V. It also has an on-chip temperature sensor capable of reading 0.3°C resolution. The TSC2200 is available in a TSSOP-28 and a QFN-32 package.