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Datasheet

PDF

软件

说明

AT42QT1481

AT42QT1481 Complete

(文件大小: 763KB, 73 页数, 修订版 E, 更新时间: 09/2014)
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The Atmel® AT42QT1481 is a capacitive touch controller with configurable 48-QTouch buttons. The Atmel QMatrix® sensing algorithm (mutual capacitance) enables the user to achieve more buttons than there are pins because of this matrix layout. This capability makes the device ideal for home appliance customers that require high button counts at low cost. The button sensors can be constructed in a variety of shapes and sizes. The device includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions and frequencies (Conducted Immunity certified to EN61000-4-6 Level 2B).

The AT42QT1481 is certified to meet the European Standards (EN) & International Electrotechnical Commission (IEC) 60730 class B home appliance certifications. IEC/EN 60730 standards cover mechanical, electrical, electronic, EMC, and abnormal operation of appliances. These certifications assure safe operation within an appliance if a fault within the system is detected by shutting it down. Although the certifications are conducted at the system level, selecting the right microcontroller (MCU) increases the ease of passing the certification and helps in bringing a product faster-to-market. With this certification, manufacturers can now easily design household appliances that are IEC/EN-certified with Atmel capacitive touch controllers for button, slider and wheel capability. This device also includes Failure Mode Effects Analysis (FMEA) for self-testing purposes to enable users to get their products to market quicker and with more safety and security.

关键参数

参数

Pin Count:

44

Touch Sensor Type:

Buttons

# of Touch Channels:

48

Operating Voltage (Vcc):

4.75 to 5.25

Interface Type:

SPI and UART

Acquisition Method:

QMatrix

 

订购码 封装 操作范围 载体类型 样品 Atmel 商店可用性1 单价2 网上购买
AT42QT1481-AU TQFP 44A 44 请求
AT42QT1481-AUR TQFP 44A 44 请求



1Backlog orders can be placed for items currently not available.
2Suggested retail price per unit for budgetary use only.