sx8675iwltrt Semtech Corporation, sx8675iwltrt Datasheet
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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)
ADVANCED COMMUNICATIONS & SENSING
G
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.
T
O
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
A
th
D
PPLICATIONS
July 2011
I
ESCRIPTION
point-of-sales
NFORMATION
computes
Evaluation Kit
WLCSP-19
WLCSP-19
WLCSP-19
Package
QFN-20
QFN-20
QFN-20
Haptics control can be
terminal
touch
screen
and
Marking
RA39
RF9E
RKL9
-
other
X-Y
Resistive Touchscreen Controller with Proximity Sensing
1
PROXIMITY SENSING
HAPTICS DRIVER
MULTITOUCH
CONTROL
K
M
EY
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
P
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
F
SX8674
EATURES
and
www.semtech.com
Over-Temperature
NRST
NIRQ
I2C
Controller
Host