CY8C20424-12LKXI

Overview

The CY8C20424-12LKXI is an 8-bit microcontroller belonging to the Infineon PSoC™ 2 family. It integrates an M8C CPU core with 32 kByte of Flash program memory and 2,048 Byte of SRAM data memory. The device supports a maximum operating frequency of 24 MHz and operates within a voltage range of 1.71 V to 5.5 V. It features 28 GPIO pins and includes one Delta-Sigma ADC module with 10-bit resolution at a sampling rate of 5.9 ksps. Communication interfaces include one I2C module, one SPI module, and one SW (Serial Wire) interface. The component is designed for industrial applications with an operating temperature range from -40 °C to 85 °C.

Feature Summary

• Integrates CapSense technology supporting both Capacitive Sensing Array (CSA) and Capacitive Sensing Differential (CSD) techniques for touch sensing applications.
• Features programmable analog blocks allowing flexible configuration of signal conditioning circuits without external components.
• Includes SmartSense technology to optimize power consumption during active and sleep modes.

Applications

• Touch-sensitive user interface controllers
• Battery-powered portable devices
• Industrial control systems requiring low-power operation

Procurement Notes

Verify the specific suffix '12LKXI' against official Infineon documentation to confirm package type, lead finish, and temperature grade. Ensure compatibility with PSoC Designer software versions for development. Confirm RoHS compliance status through current datasheets or FIT reports before procurement.

Selection Notes

Select this component when a combination of 8-bit processing, integrated capacitive touch sensing, and low-voltage operation is required. Compare pin counts and peripheral availability against similar PSoC 2 variants to ensure sufficient I/O resources. Verify that the 24 MHz clock speed meets real-time processing requirements.

Part Context

This part belongs to the PSoC™ 2 series, which combines a configurable analog block array with digital logic on a single chip. The series targets cost-sensitive embedded applications needing mixed-signal capabilities. The CY8C20424 variant specifically offers a balance of memory size and I/O count for general-purpose control tasks.

Replacement Considerations

Check for direct pin-to-pin replacements within the CY8C204xx series with higher clock speeds or additional peripherals. Verify software compatibility if migrating between different sub-families within the PSoC architecture.