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42QT2160-MMU

Description
Capacitive Touch Screen 16 Key 28-Pin VQFN EP
CategoryTouch screen controller   
File Size567KB,51 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
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42QT2160-MMU Overview

Capacitive Touch Screen 16 Key 28-Pin VQFN EP

42QT2160-MMU Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.31.00.01
TypeCapacitive
Number of Channels per Chip16
Number of Keys16 Key
Synchronous PinNo
Resolution (bit)10
Maximum Load Capacitance (pF)20
Spread SpectrumYes
Interface TypeI2C
Minimum Operating Supply Voltage (V)1.8
Maximum Operating Supply Voltage (V)5.5
Minimum High Level Output Voltage (V)4.2
Maximum Low Level Output Voltage (V)0.2
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
Standard Package NameQFN
Supplier PackageVQFN EP
Pin Count28
MountingSurface Mount
Package Height0.88
Package Length4
Package Width4
PCB changed28
Lead ShapeNo Lead
Atmel AT42QT2160
16-key QMatrix Touch Sensor IC
DATASHEET
Features
Number of keys:
up to 16 keys, and one slider (constructed from 2 to 8 keys)
Technology:
patented spread-spectrum charge-transfer (transverse mode)
Number of I/O lines:
11 (3 dedicated – configurable for input or output, 8 shared – output only)
PWM control for LED driving
Key outline sizes:
6 mm × 6 mm or larger (panel thickness dependent); widely different sizes and
shapes possible
Key spacings:
8 mm or wider, center to center (panel thickness dependent)
Slider design:
2 to 8 keys placed in sequence, same design as keys
Electrode design:
two-part electrode shapes (drive-receive); wide variety of possible layouts
PCB layers required:
one layer (with jumpers), two layers (no jumpers)
Electrode materials:
PCB, FPCB, silver or carbon on film, ITO on film
Panel materials:
plastic, glass, composites, painted surfaces (low particle density metallic
paints possible)
Adjacent metal:
compatible with grounded metal immediately next to keys
Panel thickness:
up to 3 mm glass, 2.5 mm plastic (key size dependent)
Key sensitivity:
individually settable via simple commands over I
2
C-compatible interface
Interface:
I
2
C-compatible slave mode (100 kHz)
Moisture tolerance:
Increased moisture tolerance based on hardware design and firmware tuning
Signal processing:
self-calibration, auto drift compensation, noise filtering
Adjacent Key Suppression
®
(AKS
®
) technology
Applications:
Laptop, mobile, consumer appliances, PC peripheral
This datasheet is applicable to revision 4R0 chips only
Operating Voltage:
1.8 V – 5.5 V
Package:
28-pin 4 × 4 mm QFN RoHS compliant
9502C–AT42–09/2014

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