CY8C20237-24LKXIT

Application Specific Microcontrollers Overview

The Infineon CY8C20237-24LKXIT is an 8-bit microcontroller within the PSoC family, featuring an M8C CPU core operating at a maximum frequency of 24 MHz. It integrates 8 KB of Flash program memory and 1 KB of SRAM data memory. The device supports a supply voltage range of 1.71 V to 5.5 V and operates within a temperature range of -40°C to +85°C. Packaged in a 16-pin QFN format, it provides up to 13 general-purpose I/Os, with 10 dedicated to capacitive sensing inputs. Key features include SmartSense auto-tuning for CapSense applications, QuietZone controller technology, and multiple clock sources including internal oscillators.

Application Specific Microcontrollers Feature Summary

• Integrates M8C 8-bit Harvard architecture processor running up to 24 MHz
• Includes 8 KB Flash and 1 KB SRAM with read-while-write capability
• Supports up to 10 capacitive sensing inputs via CSD PLUS algorithm
• Features SmartSense Auto-tuning for robust noise immunity and automatic parameter maintenance

Application Specific Microcontrollers Applications

• Capacitive touch button interfaces
• Slider and proximity sensor designs
• Low-power consumer electronics requiring 1.8V operation

Application Specific Microcontrollers Procurement Notes

Verify the specific package variant when ordering, as the base part number covers multiple packages. The suffix 'LKXIT' indicates a 16-pin QFN package with tape-and-reel shipping. Confirm RoHS compliance status and lead times directly with authorized distributors or Infineon sales representatives prior to procurement.

Application Specific Microcontrollers Selection Notes

Select this component for applications requiring integrated capacitive sensing without external controllers. Ensure the design utilizes the 1.71 V to 5.5 V supply range. For projects needing more GPIOs or larger memory, consider variants from the CY8C20x37/47/67/S series with different package options such as 24-pin QFN or 32-pin QFN.

Application Specific Microcontrollers Part Context

This device belongs to the CY8C20xx7/S family of 1.8 V CapSense Controllers. It shares architectural similarities with other members like the CY8C20237-24SXI (SOIC) and CY8C20337 (24-pin QFN), differing primarily in package type and available I/O count. The family is designed to replace traditional MCU-based systems with single-chip programmable solutions.

Application Specific Microcontrollers Replacement Considerations

Direct pin-compatible replacements are limited due to specific package variations. The CY8C20237-24SXI offers the same electrical specifications but in a SOIC-16 package. Other family members like CY8C20337 provide additional sensing inputs but require PCB redesign due to different pinouts.