8 채널 정전식 터치 및 근접 컨트롤러 센서 -IQS2692A
(PROXFUSION 3 CLICK)
개요
- 본 제품은 8 채널 정전식 터치 및 근접 컨트롤러 센서 -IQS2692A입니다.
- IQS2692A 칩을 기반으로 디자인된 제품으로 정전식 터치와 근접 센싱 및 홀 센싱과 인덕티브 센싱을 지원합니다.
- IQS2692A은 8개의 센서 패드를 통해 터치를 검출합니다.
- I2C 인터페이스를 가지고 있으며, 3.3V 시스템과 사용이 가능합니다.
특징
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Type Capacitive Applications Can be used for high-end proximity and touch applications and offers reliable and accurate sensing for any application that uses capacitive touch sensing functions. On-board modules IQS269A - eight-channel ProxFusion® capacitive, proximity, and touch controller with additional Hall-effect and inductive sensing, best in class signal-to-noise ratio, and low power consumption from Azoteq Key Features Low power consumption, highly flexible 8 sensor pads, internal Hall sensor, wide range of capacitance detection, best in class sensitivity and signal-to-noise ratio, and more. Interface I2C Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V -
ProxFusion 3 Click is based on the IQS269A, an eight-channel ProxFusion® capacitive, proximity, and touch controller with additional Hall-effect and inductive sensing, best in class signal-to-noise ratio, and low power consumption from Azoteq. The ProxFusion® module detects the capacitance changed with a charge-transfer method. In effect, the IQS269A represents a low-power microcontroller that features ProxFusion® technology for high-end proximity and touch applications and provides a highly integrated capacitive-touch solution with flexibility, unique combination sensing, and long-term stability. During low power mode, the ProxFusion® module can periodically wake the CPU based on a ProxFusion® timer source. Other features include automatic tuning and differential offset compensation for sense electrodes.
The Click board™ has eight PCB pads used to sense touch or proximity events. These pads are the only elements on the top side of the board, allowing placement of the protective acrylic plexiglass layer. These pads can be programmed to generate a touch event for both when they are pressed and released. If a touch event is detected on one of the onboard pads, the state of the corresponding channel will be changed, indicating activated channel, more precisely, touch has been detected on that specific channel.
ProxFusion 3 Click communicates with MCU using a standard two-wire I2C interface that supports Fast Mode with a frequency of up to 400kHz. In addition to these pins, the IQS269A has a ready interrupt line, routed on the INT pin of the mikroBUS™ socket, that indicates a communication window, and one general-purpose pin labeled as GP and routed on the PWM pin of the mikroBUS™ socket. The GP pin represents a custom touch-out/sync-in function with which one can assign a touch flag state of any channel. Besides, also allows the choice of the least significant bit (LSB) of its I2C slave address by positioning the SMD jumper labeled as ADDR SEL to an appropriate position marked as 0 and 1.
This Click board™ is designed to be operated only with a 3.3V logic voltage level. A proper logic voltage level conversion should be performed before the Click board™ is used with MCUs with different logic levels. However, the Click board™ comes equipped with a library that contains functions and an example code that can be used, as a reference, for further development.