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© 2008 Atmel Corporation. All
rights reserved.
Atmel
®
, Atmel logo and
combinations thereof,
QTouch
TM
, QField
TM
, QTwo
TM
,
QMatrix
TM
, QSlide
TM
, QWheel
TM
,
Two Touch
TM
, Adjacent Key
Suppression
TM
, AKS
TM
and
others, are registered trademarks
or trademarks of Atmel
Corporation or its subsidiaries.
Other terms and product names
may be trademarks of others.
Rev.: 10610A-AT42-10/08/0M
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Product Line
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www.atmel.com/literature
Web Site
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Technical Support
Atmel’s touch technology is backed up by comprehensive technical documentation and support based
on Atmel’s unparalleled experience in the touch sense industry.
We have strong relationships with both materials and service suppliers and we can help you locate all of
the resources you require to get your product to market. Once a design is in place, Atmel will work with
you and its partners to quickly move the product right through from early prototype to full production.
To help you get the result you want Atmel provides:
■ Guaranteed reliability
■ Easy customisation
■ The supply chain fl exibility required for large projects.
Call us to fi nd out more.
System Parameters
Technology Patented spread spectrum charge transfer (transverse mode)
Sensor layers One layer (Single Touch) or two layers (Two Touch)
Screen minimum edge
wiring
4.5 mm not including bonding area (depends on screen construction technology)
Panel Materials Plastic, Glass, Composites, Painted Surfaces (low particle density metallic paints
possible)
Panel thickness 1.0 to 2 mm glass - 0.5 to 1.5 mm plastic
QT5320 touchscreen size Up to 4.3 inches diagonal
QT5480 touchscreen size Up to 8 inches diagonal
Resolution 10-bit (1024 x 1024)
Screen material ITO (Indium Tin Oxide)
Host interface I
2
C-compatible slave mode (100 kHz or 400 kHz)
Touch response time 60 msec initially, 15 to 20 msec for updates
Signal processing Self calibration, auto drift compensation, LCD noise filtering and Adjacent Key
Suppression
TM
(AKS
TM
)
Recommended Operating Conditions
Power supply +1.8V to +5.5V (2.5V to 5.5V in high speed
mode)
QT5320/5480 ICs – Electrical and Environmental Specifi cations
Environmental Specifications
Operating temperature -40
o
to +85
o
C
Storage temperature -55
o
to +125
o
C
DC Specifications
Supply current (sleep mode) <2 µA @ 3.3V
Supply current (active/touched) <4900 µA @ 3.3V (high speed mode)
Supply current (idle/not touched) <2740 µA @ 3.3V (high speed mode)
Package Options
QT5320 32 pins, 5 mm x 5 mm QFN RoHS compliant
QT5480 49 balls, 5 mm x 5 mm BGA RoHS compliant
QT5480 44 pins, 7 mm x 7 mm QFN RoHS compliant
QT5480 44 pins, 10 mm x 10 mm TQFP RoHS compliant
The QT5320 and QT5480 are available in
small packages, required for the use in
handheld applications
