®

TSC2007

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

Drivers

Interface

SCLK

SDO

TSC2008

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

Micro TOUCH SCREEN CONTROLLER with SPI™

• Cellular Phones

23

• 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:

• Multiscreen Touch Control

–

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

• Preprocessing to Reduce Bus Activity

• SPI Interface

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 Pullup

In addition to these standard features, the TSC2008

• Auto Power-Down Control

offers

preprocessing

of

the

touch

screen

• Low Power:

measurements to reduce bus loading, thus reducing

–

32.4

µA at 1.2V, Fast Mode, 8.2kHz Eq Rate

the consumption of host processor resources that can

then be redirected to more critical functions.

–

43.8

µA at 1.8V, Fast Mode, 8.2kHz Eq Rate

–

58.4

µA at 2.7V, Fast Mode, 8.2kHz Eq Rate

The TSC2008 supports an SPI serial bus and data

transmission protocol in all three defined modes:

• Software Reset

standard,

fast,

and

high-speed.

It

offers

• Enhanced ESD Protection:

programmable

resolution

of

8

or

12

bits

to

–

±8kV HBM

accommodate different screen sizes and performance

needs.

–

±1kV CDM

–

Target ±25kV Air Gap Discharge

The

TSC2008

is

available

in

a

12-lead,

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

–

Target ±15kV Contact Discharge

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

• 1.5 x 2 WCSP-12 and 4 x 4 QFN-16 Packages

4 x 4 QFN package. The TSC2008 is characterized

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

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

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

SPI is a trademark of Motorola Inc.

3

All other trademarks are the property of their respective owners.

PRODUCT PREVIEW information concerns products in the

Copyright © 2008, Texas Instruments Incorporated

formative or design phase of development. Characteristic data and

other specifications are design goals. Texas Instruments reserves

the right to change or discontinue these products without notice.