SX8652ICSTRT Semtech, SX8652ICSTRT Datasheet

SX8652ICSTRT

Manufacturer Part Number

SX8652ICSTRT

Description

4/5-wire Resistive Touch Screen Controller (SPI)

Manufacturer

Semtech

Datasheets

1.SX8652.pdf (32 pages)

2.SX8652ICSTRT.pdf (32 pages)

3.SX8652EVKA.pdf (29 pages)

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Download datasheet (541Kb)

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The SX8652 is a very low power, high reliability controller

for 4-wire and 5-wire resistive touch screens used in PDAs,

portable

applications. It features a wide input supply range from

1.65V to 3.7V and low power modes to preserve current

when the screen is unintentionally touched.

To compute touch screen X-Y coordinates and touch

pressure with precision, a low power 12-bit analog-digital

converter is activated with the possibility to enable on-chip

data averaging processing algorithms to reduce host activity

and suppress system noise.

The touch screen controller inputs have been specially

designed to provide robust on-chip ESD protection of up to

±15kV in both HBM and Contact Discharge, and eliminates

the need for external protection devices. The SX8652 is

controlled by a high speed SPI™ serial interface.

The SX8652 is available in a 4.0 mm x 3.0 mm 14-DFN

package and a 1.5 mm x 2.0 mm wafer level chip scale

package (WLCSP) for space conscience applications.

Revision V1.6/July 2010

ADVANCED COMMUNICATIONS & SENSING

GENERAL DESCRIPTION

APPLICATIONS

ORDERING INFORMATION

1. 3000 Units / reel

SX8652ICSTRT

SX8652IWLTRT

DSC, DVR, Cell Phones

PDA, Pagers

Point-of-Sales Terminals

Touch-Screen Monitors

Part Number

instruments

Package

screen

T o the

touch

12 - Ball WLCSP

and

14 - Lead DFN

(Dimension in mm)

point-of-sales

(4.0x 3.0)

A U X /W IP E R

(1.5x2.0)

X + /B R

Y + /TR

X -/TL

Y -/B L

V D D

Marking

terminal

FG97

Interface

15kV ESD Low Power 4-Wire / 5-Wire Resistive

S creen

Touch

V ref

Page 1

KEY PRODUCT FEATURES

Touchscreen Controller with SPI Interface

Extremely Low Power Consumption: 23uA@1.8V 8kSPS

Superior On-chip ESD Protection

Single 1.65V to 3.7V Supply/Reference

4-Wire or 5-Wire Resistive Touch Screen Interface

Integrated Preprocessing Block to Reduce Host Loading

and Bus Activity

Four User Programmable Operation Modes provides

Flexibility to address Different Application Needs

Low Noise Ratiometric Conversion

Precision, High Speed 12-bit SAR ADC Operating At 74k

SPS

Throughput: 5000 (X-Y) coordinates/second (c/s) with 7-

Sample Averaging

Low Power Shut-Down Mode < 1uA

SPI™ Serial Interface

Touch Pressure Measurement (4-Wire)

Auxiliary Input (4-Wire) For Alternate ADC Input or Start

of Conversion Trigger

Hardware & Software reset

-40° C to +85°C operation

Pb-Free, Halogen Free, RoHS/WEEE compliant product

Windows CE 6.0, Linux Driver Support Available

Packages: 14-LD (4.0 mm x 3.0 mm) DFN

12-Ball (1.5 mm x 2.0 mm) WLCSP

Manual, Automatic, Pen Detect, Pen Trigger

ref-

C o ntrol

ref+

±15kV HBM (X+,X-,Y+,Y-)

±2kV CDM

±25kV Air Gap Discharge

±15kV Contact Discharge

±300V MM

A D C

P O R

O S C

G N D

out

S X 865 2

D igital

Filter

S P I

N IR Q

N R S T (D FN only)

S C LK

D O U T

D IN

N C S

V D D

www.semtech.com

DATASHEET

SX8652

T o the

H o st

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