CY8C201A0-LDX2I

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Dynamic technology and an inherently faster signal processing are requirements of technologies in the modern world. In response to these demands, Cypress has developed the CY8C201A0-LDX2I, a series of ultra-small touch controllers designed for intelligent human machine interface for touch-sensing applications. This integrated device enables manufacturers to produce smart touchscreens and multiple capacitive touch keypads. It is used to improve system performance in areas that require touch detection, such as automotive infotainment systems, industrial automation, and the Internet of Things.

The CY8C201A0-LDX2I includes an ultra-small, low-power ASIC with over 256 bytes of non-volatile memory and a 16-bit microcontroller core. This ASIC is optimized for next-generation capacitive buttons and touch screens, as well as keyboard and jog/shuttle functions. It also features an onboard temperature sensor and an EEPROM memory, which provide reliable data storage and retrieval. The CY8C201A0-LDX2I includes a low-noise, low-power auto-tune algorithm, which is designed to optimize the touch control performance in noisy environments.

The CY8C201A0-LDX2I offers improved noise immunity and optimized latency, which are critical for achieving reliable operation in demanding applications. Additionally, the CY8C201A0-LDX2I is capable of detecting a wide range of capacitive signatures and has an integrated, programmable low-power sleep mode to minimize power consumption. Its integrated LCD screen driver also ensures that the device is compatible with a variety of LCD screen types.

CY8C201A0-LDX2I related products are provided in a package of 8 pins. The 8 pins are VDD, NC, SCL, SDA, SDAEN, RESX, INTX and SLPZ. VDD is the power supply pin, NC is not used, SCL and SDA pins are used as I2C bus, SDAEN is used to enable the I2C bus, RESX and INTX are used to reset the device and to receive interrupts, and the SLPZ pin is used to enable or disable the sleep mode. The power supply requirement is 2.4V - 5.5V, the input voltage range is 0V - VDD, the output voltage range is 0.4V - VDD, and the working temperature ranges from -40℃ to +125℃.

The core of the CY8C201A0-LDX2I is the capacitive touch detection system. The basic working principle is to measure the capacitance between two electrodes (sensing channels). This capacitance is changed by the presence of a conducting object. The device uses a patented dual-sensing approach to overcome any environmental noise. The capacitance can be measured in one of the two modes: the cyclic scanning mode and the single point polling mode. In the cyclic scanning mode, the device continually measures the capacitance of each sensing channel and updates the value if the capacitance changes. In the single-point polling mode, the device measures the capacitance of a single channel, and it updates the value if the capacitance changes. The measured capacitance value is compared to the preset reference threshold. If the measured value is greater than the threshold value, it indicates the presence of a conducting object.

In conclusion, the CY8C201A0-LDX2I touch controller is an efficient and reliable device which is suitable for a wide range of touch-sensing applications. It incorporates an ultra-small, low power ASIC with a 16-bit microcontroller core and offers improved noise immunity and optimized latency. Its capacitive touch detection system uses a dual-sensing approach to overcome any environmental noise and is capable of detecting a wide range of capacitive signatures. The device is also programmable and can be used for a variety of touch-sensing applications, such as automotive infotainment systems, industrial automation, and the Internet of Things.

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