TSC2007| Datasheet

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Burr Brown Products from Texas Instruments

007

TSC2007
SBAS405 MARCH 2007

1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire Micro TOUCH SCREEN CONTROLLER with I2CTM Interface
FEATURES
4-Wire Touch Screen Interface Single 1.2V to 3.6V Supply/Reference Ratiometric Conversion Effective Throughput Rate: Up to 20kHz (8-Bit) or 10kHz (12-Bit) Preprocessing to Reduce Bus Activity I2C Interface Supports: Standard, Fast, and High-Speed Modes Simple, Command-Based User Interface: TSC2003 Compatible 8- or 12-Bit Resolution On-Chip Temperature Measurement Touch Pressure Measurement Digital Buffered PENIRQ On-Chip, Programmable PENIRQ Pullup Auto Power-Down Control Low Power: 32.24uA at 1.2V, Fast Mode, 8.2kHz Eq Rate 39.31uA at 1.8V, Fast Mode, 8.2kHz Eq Rate 53.32uA at 2.7V, Fast Mode, 8.2kHz Eq Rate Enhanced ESD Protection: 8kV HBM 1kV CDM 25kV Air Gap Discharge 15kV Contact Discharge 1.5 x 2 WCSP-12 and 5 x 6.4 TSSOP-16 Packages

APPLICATIONS
Cellular Phones PDA, GPS, and Media Players Portable Instruments Point-of-Sale Terminals Multiscreen Touch Control

DESCRIPTION
The TSC2007 is a very low-power touch screen controller designed to work with power-sensitive, handheld applications that are based on an advanced low-voltage processor. It works with a supply voltage as low as 1.2V, which can be supplied by a single-cell battery. It contains a complete, ultra-low power, 12-bit, analog-to-digital (A/D) resistive touch screen converter, including drivers and the control logic to measure touch pressure. In addition to these standard features, the TSC2007 offers preprocessing of the touch screen measurements to reduce bus loading, thus reducing the consumption of host processor resources that can then be redirected to more critical functions. The TSC2007 supports an I2C serial bus and data transmission protocol in all three defined modes: standard, fast, and high-speed. It offers programmable resolution of 8 or 12 bits to accommodate different screen sizes and performance needs. The TSC2007 is available in a 12-lead, (1.555 0.055mm) x (2.055 0.055mm), 3 x 4 array, wafer chip-
scale package (WCSP), and a 16-pin, TSSOP package. The TSC2007 is characterized for the 40 C to +85 C industrial temperature range.
VDD/REF PENIRQ

U.S. Patent NO. 6246394; other patents pending.

Preprocessing

X+ XY+ Y-

Touch Screen Drivers Interface TEMP

Mux

SAR ADC

AUX Internal Clock

I2C Serial Interface and Control

SCL SDA A[0:1]

GND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. I2C is a trademark of NXP Semiconductors. All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.