CY8C21434-24LQXI

Overview

The CY8C21434-24LQXI is an 8-bit microcontroller from the Infineon PSoC 1 family, utilizing the M8C core. It features 8 KB of Flash memory and 512 bytes of RAM. The device supports a maximum clock frequency of 24 MHz and operates within a voltage range of 2.4 V to 5.25 V. It provides 24 CapSense I/O pins and 28 general-purpose I/Os in a 32-pin QFN package.

Feature Summary

• Integrates CapSense technology for capacitive touch sensing applications
• Includes a Delta-Sigma ADC module with 10-bit resolution
• Supports programmable analog blocks for mixed-signal processing

Applications

• Capacitive touch interface controllers
• Low-power embedded control systems
• Mixed-signal application development

Procurement Notes

This component is officially listed as End-of-Life (EOL) by Infineon Technologies. Verification of current availability requires checking authorized distributors for remaining stock or obsolete inventory. Procurement should account for potential supply constraints and lead time uncertainties associated with discontinued products.

Selection Notes

Select this part for designs requiring integrated CapSense capabilities alongside standard 8-bit MCU functions. Ensure the 2.4 V to 5.25 V operating voltage aligns with system power rails. Verify that the 24 CapSense channels meet interface requirements and that the 24 MHz performance suffices for real-time processing needs.

Part Context

Part of the PSoC 1 series, combining digital and analog resources on a single chip. Designed for cost-sensitive applications needing flexible I/O and touch sensing without external components.

Replacement Considerations

Consult official replacement guides for compatible PSoC 1 variants or newer generations such as PSoC 4/6 if CapSense support is required. Verify pin compatibility and software migration paths before substitution.