CY8C21434-24LQXI

Overview

The CY8C21434-24LQXI is an 8-bit microcontroller within the PSoC 1 family, featuring the M8C core. It integrates 8KB of Flash program memory and 512 bytes of RAM. The device operates on a supply voltage range of 2.4V to 5.25V and supports clock speeds up to 24MHz. It provides 24 general-purpose I/O pins and includes CapSense technology for capacitive touch sensing. The component is housed in a 28-pin QFN package.

Feature Summary

• Integrates CapSense technology for capacitive touch sensing applications
• Features a mixed-signal array with configurable analog and digital blocks
• Includes an 8-bit M8C processor core with hardware multiply and divide instructions

Applications

• Capacitive touch interface controllers
• Consumer electronics input devices
• Embedded control systems requiring mixed-signal processing

Procurement Notes

Verify current availability status as this component may be subject to end-of-life restrictions. Confirm package type and temperature grade specifications against project requirements. Ensure compatibility with existing firmware development tools for the PSoC 1 architecture before procurement.

Selection Notes

Select this component for designs requiring integrated capacitive touch sensing without external controllers. Consider the limited pin count and memory size relative to application complexity. Evaluate the M8C instruction set efficiency for real-time control tasks involving mixed-signal inputs.

Part Context

This part belongs to the Cypress PSoC 1 series, which combines programmable analog and digital peripherals with an 8-bit CPU. The series is designed to reduce system component count by integrating functions typically handled by separate chips into a single mixed-signal array platform.

Replacement Considerations

Check for direct pin-compatible substitutes within the CY8C21xxx series. Verify if newer generations like PSoC 3 or 4 offer functional equivalents with updated toolchains.