TSC2008

1

FEATURES

APPLICATIONS

DESCRIPTION

PENIRQ

SPI

Serial

Interface

and

Control

CS

SDI

X+

X-

Y+

Y-

AUX

TEMP

Mux

VDD/REF

GND

SAR

ADC

Internal

Clock

Touch

Screen

Sensor

Drivers

SCLK

SDO

TSC2008

1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire

Micro TOUCH SCREEN CONTROLLER with SPI™

• Cellular Phones

234

• 4-Wire Touch Screen Interface

• PDA, GPS, and Media Players

• Single 1.2V to 3.6V Supply/Reference

• Portable Instruments

• Ratiometric Conversion

• Point-of-Sale Terminals

• Effective Throughput Rate:

• Multi-Screen Touch Control Systems

–

Up to 20kHz (8-Bit) or 10kHz (12-Bit)

• Preprocessing to Reduce Bus Activity

• High-Speed SPI (up to 25MHz)

The TSC2008 is a very low-power touch screen

• Simple Command-Based User Interface:

controller designed to work with power-sensitive,

–

TSC2046 Compatible

handheld applications that are based on advanced

low-voltage processors. It works with a supply voltage

–

8- or 12-Bit Resolution

as low as 1.2V, which can be supplied by a

• On-Chip Temperature Measurement

single-cell battery. It contains a complete, ultra-low

• Touch Pressure Measurement

power, 12-bit, analog-to-digital (A/D) resistive touch

screen converter, including drivers and the control

• Digital Buffered PENIRQ

logic to measure touch pressure.

• On-Chip, Programmable PENIRQ Pull-up

In addition to these standard features, the TSC2008

• Auto Power-Down Control

offers

preprocessing

of

the

touch

screen

• Low Power (12-Bit, 8.2kHz Eq Rate):

measurements to reduce bus loading, thus reducing

–

30.4

µA at 1.2V, f

the consumption of host processor resources that can

then be redirected to more critical functions.

–

35.5

µA at 1.8V, f

–

44.6

µA at 2.7V, f

The TSC2008 supports an SPI serial bus and data

transmission. It offers programmable resolution of 8

• Power-On, Software, and SureSet™ Resets

or 12 bits to accommodate different screen sizes and

• Enhanced ESD Protection:

performance needs.

–

±8kV HBM

The

TSC2008

is

available

in

a

12-lead,

–

±1kV CDM

(1,555 ±0,055mm) x (2,055 ±0,055mm) 3 x 4 array,

–

±25kV Air Gap Discharge

wafer chip-scale package (WCSP), and a 16-pin,

–

±15kV Contact Discharge

for the –40°C to +85°C industrial temperature range.

(1)

RGV (QFN) package available Q1, 2009.

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

1

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.

2

SureSet is a trademark of Texas Instruments.

3

SPI is a trademark of Motorola Inc.

4

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.