PINTDAV

I C

2

Serial

Interface

and

Control

VDD/REF

X+

X-

Y+

Y-

AUX

TEMP

Mux

PENIRQ

DAV

SAR

ADC

Internal

Clock

Touch

Screen

Drivers

Interface

RESET

AD0

SCL

SDA

TSC2014

www.ti.com

SBAS522 – SEPTEMBER 2010

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

Check for Samples: TSC2014

1

FEATURES

APPLICATIONS

•

Cellular Phones

23

•

4-Wire Touch Screen Interface

•

Portable Instruments

•

Ratiometric Conversion

•

MP3 Players, Pagers

•

Single 1.2V to 3.6V Supply

•

Multiscreen Touch Control

•

Preprocessing to Reduce Bus Activity

•

DESCRIPTION

•

Internal Detection of Screen Touch

The TSC2014 is a very low-power touch screen

•

Register-Based Programmable:

controller designed to work with power-sensitive,

–

10-Bit or 12-Bit Resolution

handheld applications that are based on advanced

low-voltage processors. It works with a supply voltage

–

Sampling Rates

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

–

System Timing

single-cell

battery.

It

contains

a

complete,

•

On-Chip Temperature Measurement

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

touch screen converter, including drivers and the

•

Touch Pressure Measurement

control logic to measure touch pressure.

•

Auto Power-Down Control

In addition to these standard features, the TSC2014

•

Low Power:

offers

preprocessing

of

the

touch

screen

–

430mW at 1.8V, 50SSPS

measurements to reduce bus loading, thus reducing

–

320mW at 1.6V, 50SSPS

the consumption of host processor resources that can

then be redirected to more critical functions.

–

190mW at 1.2V, 50SSPS

–

58mW at 1.6V, 8.2kSPS Eq. Rate

transmission protocol in all three defined modes:

–

37mW at 1.2V, 8.2kSPS Eq. Rate

standard,

fast,

and

high-speed.

It

offers

•

Enhanced ESD Protection:

programmable

resolution

of

10

or

12

bits

to

–

±8kV HBM

accommodate different screen sizes and performance

needs.

–

±1kV CDM

–

±25kV Air Gap Discharge

The TSC2014 is available in a miniature, 12-lead,

3 x 4 array, (1.555 ±0.055)mm x (2.055 ±0.055)mm

–

±11kV Contact Discharge

wafer chip-scale package (WCSP) package. The

•

1.5 x 2.0 WCSP-12 Package

device is characterized for the –40°C to +85°C

U.S. Patent No. 6,246,394; other patents pending.

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

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2010, 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.