sx8675iwltrt Semtech Corporation, sx8675iwltrt Datasheet

sx8675iwltrt

Manufacturer Part Number

sx8675iwltrt

Description

Haptics Enabled Multitouch 4/5-wire Resistive Touchscreen Controller With Proximity Sensing

Manufacturer

Semtech Corporation

Datasheet

1.SX8675IWLTRT.pdf (64 pages)

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ADVANCED COMMUNICATIONS & SENSING

The SX8674, SX8675 and SX8676 belong to a family

of high performance haptics enabled multitouch 4/5-

wire resistive touch screen controller with proximity

detection, optimized for hand held applications such

as mobile phones, portable music players, game

machines,

consumer and industrial applications. They feature a

wide input supply range from 2.3V to 3.6V.

The

coordinates and touch pressure with a precision, low

power 12-bit analog-digital converter. On-chip data

averaging processing algorithms can be activated to

reduce host activity and suppress system noise. The

processing core features low power modes which

intelligently minimize current in operation as well as in

automatic shut-down.

Multitouch feature enables detection of 2 fingers on

the touchscreen and several gestures like rotation

and pinch/stretch.

A capacitive proximity detection circuit has been

integrated into the SX8674 and SX8676 to enable

host controlled power management for battery

applications. Proximity detection above 5 cm is

possible using either the resistive touch screen as the

sensor or with a single conductive plate, with

communication to the host via the serial interface.

The SX8674 and SX8675 also integrate a haptics

motor driver for Linear Resonant Actuator (LRA) and

Eccentric Rotating Mass (ERM) micro motors with up

to 250mA drive current.

performed using either an external PWM signal or the

I2C serial interface, providing simple host interfacing

and minimizing its I/O requirement.

Integrated very high ESD protection, of up to ±15kV

on display inputs not only saves cost and board area,

but also increases application reliability.

The three devices have an ambient operating

temperature range of -40° C to +85° C, and are offere d

in both a 4mm x 4mm, 20-lead QFN package and

2.07mm x 2.07mm 19-lead CSP package for space-

conscious applications.

Rev 1 – 25

YPICAL

ENERAL

RDERING

SX8674IWLTRT

SX8675IWLTRT

SX8676IWLTRT

SX8674ICSTRT

SX8675ICSTRT

SX8676ICSTRT

Part Number

Game Machines, Portable Music Players

Mobile Phones

DSC, DVR, Phones

POS/POI Terminals

Touch-Screen Monitors

SX8674EVK

controller

PPLICATIONS

July 2011

ESCRIPTION

point-of-sales

NFORMATION

computes

Evaluation Kit

WLCSP-19

Package

QFN-20

Haptics control can be

terminal

touch

screen

and

Marking

RA39

RF9E

RKL9

other

X-Y

Resistive Touchscreen Controller with Proximity Sensing

PROXIMITY SENSING

HAPTICS DRIVER

MULTITOUCH

CONTROL

Low Voltage Operation

Low Power Consumption

4/5-Wire Touchscreen Interface

Capacitive Proximity Sensing (SX8674/76)

Haptics Driver for LRA and ERM (SX8674/75)

400kHz I2C Serial Interface

Several Host Operating Modes Available

Hardware, Software, and Power-On Reset

-40° C to +85° C Operating Temperature Range

15kV HBM & IEC ESD Protection

Small Footprint Packages

Pb & Halogen Free, RoHS/WEEE compliant

SX8674/SX8675/SX8676

RODUCT

2.3V to 3.6V Supply

Integrated Low Drop Out (LDO) Regulator

30uA@2.3V 8ksps (ESR)

0.4uA Shut-Down Current

Precision, Ratiometric 12-bit ADC

Up to 5000 (X-Y) coordinates/second (c/s)

Programmable Digital Filtering/Averaging

Touch Pressure Measurement (4-Wire)

Programmable Operating Mode (Manual,

No Additional Components Required

Uses Resistive Touchscreen or a Simple

>5 cm Detection Distance

8uA @ 200ms Scan Period

Fully Programmable (Sensitivity, etc)

Haptics Waveform Generation Control (I2C

Short Circuit Protection

Early

Maskable Interrupt Output (NIRQ)

Real-time Events Monitoring (AUX1-3)

Polling (I2C)

Pen Detect, Pen Trigger)

Conductive Area as the Sensor

or PWM Input)

Monitoring and Protection

Haptics Enabled Multitouch 4/5-Wire

Warning

SX8674

EATURES

and

www.semtech.com

Over-Temperature

NRST

NIRQ

I2C

Controller

Host

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