CY8C20447S-24LQXIT

Application Specific Microcontrollers Overview

The CY8C20447S-24LQXIT is an 8-bit microcontroller from the Infineon PSoC1 family, featuring a 24 MHz M8C CPU and integrated CapSense technology. It supports up to 31 capacitive sensing inputs with SmartSense auto-tuning for robust noise immunity. The device includes 16 KB of Flash memory and 2 KB of SRAM. Key peripherals include I2C, SPI, three 16-bit timers, a 10-bit ADC, and two comparators. Operating voltage ranges from 1.71 V to 5.5 V, with standby current as low as 1.1 µA.

Application Specific Microcontrollers Feature Summary

• CapSense Plus (CSD PLUS) sensing algorithm supporting up to 31 buttons, 6 sliders, and proximity sensors
• SmartSense Auto-Tuning eliminates manual tuning and compensates for manufacturing variations
• M8C Harvard-architecture CPU operating at frequencies up to 24 MHz
• Flexible memory configuration with 16 KB Flash and 2 KB SRAM

Application Specific Microcontrollers Applications

• Consumer electronics requiring capacitive touch interfaces
• Proximity sensing applications in metal-rich environments
• Low-power battery-operated devices utilizing deep sleep modes
• Industrial control panels with high noise immunity requirements

Application Specific Microcontrollers Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status prior to procurement. Check for end-of-life notifications or obsolescence warnings. Ensure packaging specifications match design requirements. Validate supply chain stability for long-term production needs.

Application Specific Microcontrollers Selection Notes

Select this model when 31 CapSense channels are required within a 32-pin QFN package. Choose based on the need for SmartSense auto-tuning to reduce development time. Consider the 1.71 V to 5.5 V operating range for versatile power supply designs. Evaluate memory size against application firmware complexity.

Application Specific Microcontrollers Part Context

This part belongs to the CY8C20xx7/S series, designed as a single-chip solution replacing multiple discrete components. It integrates programmable analog and digital blocks with the M8C core. The S suffix indicates specific package and temperature grade characteristics within the broader PSoC1 family.

Application Specific Microcontrollers Replacement Considerations

Check for direct pin-compatible upgrades within the CY8C20xx7/S family. Verify if newer generations offer enhanced performance or extended availability. Assess firmware compatibility before substituting with similar MCU architectures.