LC717A10PJ-AH

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The LC717A10PJ-AH is part of a range of devices from ON Semiconductor that provide capacitive touch control. This particular device is a programmable single-chip controller that is used to detect and measure capacitive touch inputs. It is ideal for applications such as consumer electronics, appliance controls and haptics, gaming, automotive, industrial control and medical.

The LC717A10PJ-AH features 8-bit analog registers, 8-bit digital output registers, 8-bit digital input registers, 8-bit internal RAM, 6-bit software-programmed GPIOs, and a 12-bit ADC. The device also includes a specialized timing and oscillator as well as an interrupt system. With its advanced capacitive touch detection and measurement capabilities, the LC717A10PJ-AH provides accurate, efficient, and reliable control over a wide range of system settings.

At the core of the LC717A10PJ-AH’s capacitive touch detection and measuring technology resides a Charge Transfer Response (CTR) Sense Circuit. This circuit measures the amount of capacitive charge that is transferred between the programmed capacitive touch pad and the device’s internal capacitatively-sensed input buffer. This process allows the device to accurately detect and measure touch inputs.

Upon the initial touch, the electrical characteristics of the device’s input are converted, then measured, and the device stores this data as a baseline measurement. When the user moves his or her finger to the surface of the touch pad, the electrical characteristics of the touch pad are measured again and compared to the baseline measurement. If the new measurement differs by a certain amount from the original, then the LCD controller interprets this as a capacitive touch input.

The LC717A10PJ-AH’s advanced capacitive touch detection and tracking technology also comes with some built-in safety measures to help avoid unintentional touches. Such measures include the intelligent rate of touch sensing, which helps the device avoid false positives by measuring the rate of capacitive charge transfer. Additionally, the device is also equipped with a programmed low-capacitance detection and threshold detection, which helps to detect accidental touches from nearby objects and prevent undesired inputs from occurring.

The LC717A10PJ-AH also offers a number of other advanced features, such as programmable digitalizer setup, reversed touch detection, zero and leakage current detection, adaptive channel switching, and linear or non-linear transition curves. Additionally, the device features an internal oscillator, adjustable clock source, and an autonomous polling system, which allows the device to run without the aid of a host processor.

By using the LC717A10PJ-AH’s programmable hardware and software, engineers can create robust and efficient designs that are reliable and cost-effective. The device’s integrated sensing technology allows designers to create products that accurately respond to touch inputs, as well as detect and block potentially unwanted touches. The device can then be used in a variety of applications, from consumer electronics and appliances, to gaming, automotive, industrial control, and medical.

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