AT42QT1244-MU

Series:	QMatrix™
Packaging:	Tray
Part Status:	Active
Type:	Buttons
Proximity Detection:	No
Number of Inputs:	Up to 24
LED Driver Channels:	--
Interface:	I²C
Resolution:	10 b
Voltage - Supply:	3 V ~ 5 V
Current - Supply:	6.6mA
Operating Temperature:	-40°C ~ 105°C
Package / Case:	32-VFQFN Exposed Pad
Supplier Device Package:	32-QFN (5x5)

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AT42QT1244-MU is a comprehensive capacitive sensor IC solution designed to enable capacitive touch buttons, keys, and sliders. The device incorporates a highly integrated capacitive sensing circuit with a sixteen-channel Capacitive Sense Matrix (CSM) inside the device. It also contains a QTouch sensing library that enables robust and reliable detection of touches on or near the surface of the device.The AT42QT1244-MU is designed to capture and detect changes in capacitive signals using a CSM of touch signal input channels. Each channel corresponds to a single driving signal and can sense a touch signal. The CSM is connected to a single pin of the device, allowing for efficient interfacing to the sensor.The AT42QT1244-MU features an on-chip system timer with low-power operation, enabling the device to remain operational for long periods of time, even with low-power operation. The device also features a calibration system that is used to calibrate the sensor’s baseline values, eliminating false touch detection.The AT42QT1244-MU is designed to provide a cost-effective and low-power solution for capacitive touch applications. The device is ideal for applications such as consumer electronics, home automation, kitchen appliances, and medical devices.The AT42QT1244-MU utilizes an energy-saving state machine and a system timer to detect touch signals. When a touch signal is detected, the device generates a low-power interrupt signal. This signal can also be used to trigger a variety of other functions.The AT42QT1244-MU employs advanced algorithms to enable accurate and reliable touch detection. The algorithms are based on a combination of mutual and self-capacitance measurements, which are used to detect the presence of a touch signal. The algorithms enable robust and reliable touch detection, even when the device is subject to interference or environmental changes.The AT42QT1244-MU also features a range of other features that make it suitable for a wide range of capacitive touch applications. The device contains multiple levels of interrupt priority, which allows it to handle multiple touch signals concurrently. The device also provides adjustable detection sensitivity and settling time to allow developers to customize the device’s performance to the needs of their application.The AT42QT1244-MU is an ideal solution for a wide range of capacitive touch applications, and its combination of low-power operation and robust detection capabilities makes it a great choice for embedded systems. The device’s advanced algorithms provide accurate and reliable touch detection, and its low-power operation ensures long battery life. The AT42QT1244-MU is capable of detecting changes in capacitive signals, making it suitable for a wide range of capacitive touch systems.

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