Microchip AT42QT1481 Manual de Usario

Microchip No categorizado AT42QT1481

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9621EX–AT42–07/2014

Features

Number of keys:

Up to 48

Technology:

Patented charge-transfer (transverse mode), with frequency hopping

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)

Electrode design:

Two-part electrode shapes (drive-receive); wide variety of possible layouts

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 50 mm glass, 20 mm plastic (key size dependent)

Key sensitivity:

Individually settable via simple commands over serial interface

Signal processing:

Self-calibration, auto drift compensation, noise filtering, Adjacent Key

Suppression®

Interfaces:

UART

SPI slave (4 MHz maximum clock rate)

STATUS indication pin

Debug output

FMEA compliant design features

IEC/EN/UL60730 compliant design features

UL approval

VDE compliance

For use in both class B and class C safety-critical products

Atmel AT42QT1481

48-Key QMatrix FMEA IEC/EN60730 Touch Sensor IC

DATASHEET

2AT42QT1481 [DATASHEET]

9621EX–AT42–07/2014

Detects and Reports Key Failure

Power:

+4.75 to 5.25 V

Package:

44-pin 10 × 10 mm TQFP RoHS compliant

AT42QT1481 [DATASHEET]

9621EX–AT42–07/2014

1. Pinout and Schematic

1.1 Pinout Conguration

Especificaciones del producto

Marca:	Microchip
Categoría:	No categorizado
Modelo:	AT42QT1481
Tipo de operación:	Knop
Color del producto:	Zwart
Peso.:	544 g
Ancho:	15.87 mm
Profundidad:	19.05 mm
Altura:	15.24 mm
Manual de usuario:	Ja
Activos:	360 W
Interruptor encendido / apagado:	Ja
Apagado automático:	Ja
taza medidora:	Ja
Luz indicadora de poder:	Ja
Botón de encendido/apagado iluminado:	Ja
Tapa extraíble:	Ja
Capacidad de huevos:	7 eieren
Número de portahuevos:	7
Función de caza furtiva:	Ja
Capacidad de caza furtiva (huevos):	2