CY8C201A0-SX21

Overview

The CY8C201A0-SX21 is a capacitive touch sensor controller from the PSoC 2 family, manufactured by Cypress Semiconductor Corp. It integrates CapSense Express technology to handle self-capacitance sensing for buttons and sliders. The device features configurable I/Os designed for direct connection to touch sensors without requiring external analog components. It operates within standard voltage ranges and supports serial communication interfaces for system integration.

Feature Summary

• Integrates CapSense Express technology for automated self-capacitance sensing
• Configurable I/Os support direct connection to touch sensor electrodes
• Eliminates need for external analog signal conditioning components
• Supports slider and button configurations via programmable logic

Applications

• Consumer electronics touch interfaces
• Appliance control panels with slider inputs
• Industrial human-machine interface buttons
• Portable device touch input modules

Procurement Notes

Verify the manufacturer part number CY8C201A0-SX21 against official Cypress Semiconductor documentation to ensure authenticity. Confirm that the component meets RoHS compliance standards as indicated in public datasheets. Check for lead-free markings on the package. Ensure the supplier provides traceability to the original manufacturer. Validate that the specific suffix SX21 corresponds to the correct packaging type and temperature grade specified in the product data sheet.

Selection Notes

Select this component when designing systems requiring dedicated capacitive touch sensing with minimal external circuitry. It is suitable for applications needing multiple configurable I/Os for touch detection. Consider its compatibility with the host microcontroller's communication protocols. Evaluate power consumption requirements against the device specifications. Ensure the physical package size fits the target PCB layout constraints.

Part Context

This part belongs to the PSoC 2 family of programmable system-on-chip devices. It is specifically categorized under interface sensors and capacitive touch controllers. The CY8C201A0 variant focuses on CapSense functionality with configurable digital resources. It represents a specialized solution for integrating touch capabilities into embedded systems without complex analog design overhead.

Replacement Considerations

Consult official Cypress Semiconductor substitution guides for verified alternatives. Cross-reference pinouts and electrical characteristics before replacing. Ensure any substitute maintains compatible firmware architecture if using existing code.

FAQ

What sensing technology does the CY8C201A0-SX21 utilize?

It utilizes CapSense Express technology for self-capacitance sensing.

Does the CY8C201A0-SX21 require external analog components for touch sensing?

No, it integrates the necessary analog front-end for direct sensor connection.