CY8C20237-24SXI

Application Specific Microcontrollers Overview

The CY8C20237-24SXI is an 8-bit microcontroller from the Cypress Semiconductor CY8C20xx7/S family, featuring a 1.8 V CapSense controller with SmartSense auto-tuning. It integrates an M8C CPU core operating at up to 24 MHz, 8 KB of Flash program memory, and 1 KB of SRAM data memory. The device supports 10 capacitive sensing inputs within a 16-pin SOIC package. Key electrical specifications include an operating voltage range of 1.71 V to 5.5 V, an operating temperature range of –40°C to +85°C, and low-power modes including standby (1.1 µA typical) and deep sleep (0.1 µA typical).

Application Specific Microcontrollers Feature Summary

• Capacitive Sensing: QuietZone Controller with CSD PLUS algorithm for robust performance, supporting up to 10 sensing inputs in the 16-pin SOIC package.
• SmartSense Auto-Tuning: Eliminates manual tuning by establishing, monitoring, and maintaining optimal sensor parameters during runtime.
• M8C Processor Core: Harvard-architecture 8-bit CPU with speeds up to 24 MHz, integrated with 8 KB Flash and 1 KB SRAM.
• Low Power Operation: Features standby mode at 1.1 µA typical and deep sleep mode at 0.1 µA typical, with an operating voltage range of 1.71 V to 5.5 V.

Application Specific Microcontrollers Applications

• Capacitive touch interfaces requiring noise immunity and water tolerance.
• Proximity sensing applications utilizing driven shield capabilities.
• Systems requiring low average power consumption with periodic wake-up scanning.

Application Specific Microcontrollers Procurement Notes

Verify component authenticity through authorized Infineon or Cypress distributors. Confirm RoHS compliance status via official documentation. Check for moisture sensitivity levels and reflow soldering temperature limits prior to assembly. Ensure proper handling procedures are followed due to ESD sensitivity.

Application Specific Microcontrollers Selection Notes

Select this model for designs requiring 10 dedicated capacitive sensing channels in a compact 16-pin SOIC form factor. Consider the 1.71 V to 5.5 V supply range for compatibility with various system voltages. Evaluate the 24 MHz maximum clock speed against processing requirements. Verify that the 8 KB Flash and 1 KB SRAM meet application memory constraints.

Application Specific Microcontrollers Part Context

This component belongs to the CY8C20xx7/S series of PSoC devices, which integrate programmable analog and digital blocks with an M8C processor. The '24' suffix indicates a 24 MHz maximum clock frequency capability, while 'SXI' denotes the 16-pin SOIC package variant with industrial temperature rating.

Application Specific Microcontrollers Replacement Considerations

Compatible alternatives within the same family include CY8C20247-24SXI, which shares identical pinout and memory configuration but may offer different flash sizes or feature sets. Cross-referencing specific electrical characteristics and software compatibility is required before substitution.

Application Specific Microcontrollers FAQ

What is the maximum number of capacitive sensing inputs supported by the CY8C20237-24SXI?

The CY8C20237-24SXI supports up to 10 capacitive sensing inputs when configured in the 16-pin SOIC package.

How does SmartSense Auto-Tuning benefit the design process?

SmartSense Auto-Tuning automatically establishes, monitors, and maintains optimal sensor tuning parameters during runtime, eliminating the need for manual tuning during development and production.

What are the typical current consumption values for low-power modes?

The device typically consumes 1.1 µA in standby mode and 0.1 µA in deep sleep mode.