CY8C20236A-24LKXAT

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The cy8c20236a-24lkxat MCU (49S (20 MIPS) CapSense, μC/OS-II) is part of Cypress’s PSoC 3 programmable system-on-chip. This microcontroller is designed to meet the requirements of applications that need a low power MCU, with integrated capacitive touch sensing, and a powerful 8051 8-bit central processing unit (CPU). This article will discuss the application field and working principle of the CY8C20236A-24LKXAT.

Application Field

The CY8C20236A-24LKXAT is a single-chip, low-power, 8-bit microcontroller with a wide range of integrated peripherals and programmable analog resources. Its main feature is the integration of CapSense, a capacitive sensing technology, which makes the Cypress CY8C20236A-24LKXAT an ideal solution for touch-sensitive buttons, sliders, and wheels. The device is suitable for applications such as data input, digital and audio media, remote control devices, home appliances, telecom peripherals, and body health applications.

The device also features a wide range of analog and digital peripherals, including a 24-bit programmable timer, five muxed interrupt sources, and several digital blocks, such as a 5-channel hardware Counter/Timer. In addition, the device has multiple power-management modes, including deep sleep and hibernate, to reduce overall power consumption when not in active use.

Working Principle

The Cypress CY8C20236A-24LKXAT uses a CapSense, a capacitive sensing technology, in order to detect human touch. It consists of three main components: a transmitter (Tx), a receiver (Rx), and a measurement circuit. When a finger touches the surface that the Rx has been configured to sense, there is a capacitive coupling between the Tx and the Rx. This capacitive coupling generates a signal that is then measured by the measurement circuit, which is then processed to detect the presence or absence of a finger. This is done using the device’s on-chip hardware, eliminating the need for external components.

The device comes with a comprehensive software library, including libraries for the CapSense peripheral, to make user code development easier. The library provides basic functions for capacitive sensing, such as calibration, wakeup, and recognition. The library also allows developers to create custom data structures for user-defined values or register settings, and to log the data from the sensors in order to detect changes over time.

The device also includes a range of peripheral components, such as an 8-bit UART and SPI block, Timer/Counter, and PWM, as well as a 24-bit programmable timer, a clock supervisor, and a low-power oscillator. The device also has multiple power-management modes, including deep sleep and hibernate, to reduce overall power consumption when not in active use.

Conclusion

The Cypress CY8C20236A-24LKXAT MCU is a powerful and versatile embedded processor with integrated capacitive touch sensing. The device is suitable for applications such as data input, digital and audio media, remote control devices, home appliances, telecom peripherals, and body health applications. The device also includes an extensive software library, as well as a wide range of integrated peripherals and programmable analog resources. Additionally, its multiple power-management modes help to reduce overall power consumption when not in active use.

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