CY8C20666A-24LTXI

Application Specific Microcontrollers Overview

The CY8C20666A-24LTXI is an 8-bit microcontroller from the PSoC 1 family, featuring the M8C CPU core with a maximum operating frequency of 24 MHz. It integrates 32 kB of Flash program memory and 2 kB of SRAM data memory within a QFN-48 package. The device supports a wide operating voltage range of 1.71 V to 5.5 V and includes a full-speed USB 2.0 interface (12 Mbps). Key features include CapSense technology for up to 33 buttons or 6 sliders, SmartSense auto-tuning, and multiple communication interfaces such as I2C and SPI.

Application Specific Microcontrollers Feature Summary

• M8C 8-bit Harvard architecture processor running at up to 24 MHz
• Integrated CapSense block supporting up to 33 buttons or 6 sliders with SmartSense auto-tuning
• Full-Speed USB 2.0 compliant controller (12 Mbps)
• Memory configuration: 32 kB Flash and 2 kB SRAM

Application Specific Microcontrollers Applications

• Capacitive touch sensing interfaces for consumer electronics
• USB-enabled peripheral devices requiring low pin count
• Battery-powered applications utilizing low-power sleep modes
• Industrial control systems with I2C/SPI connectivity requirements

Application Specific Microcontrollers Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeit risks. Confirm RoHS compliance status via official datasheets before integration. Check for end-of-life notifications as discontinuation may impact long-term supply chain stability. Ensure proper ESD handling procedures are followed during storage and assembly.

Application Specific Microcontrollers Selection Notes

Select this model when specific memory capacity (32 kB Flash) and high GPIO count (up to 33 sensing inputs) are required. Consider the QFN-48 package constraints for PCB layout. Evaluate power consumption requirements against standby and deep sleep current specifications if battery operation is critical. Verify compatibility with existing development tools like PSoC Designer.

Application Specific Microcontrollers Part Context

This part belongs to the CY8C20xx6A series of programmable system-on-chip controllers. It shares architectural similarities with other members of the PSoC 1 family but offers distinct memory and I/O configurations. The 'A' suffix typically denotes specific silicon revisions or feature sets within the broader product line.

Application Specific Microcontrollers Replacement Considerations

Direct replacements must match the M8C core architecture and Pin-to-Pin compatibility. Review errata documents for known silicon issues that may affect functionality. Consider newer generations of CapSense controllers if advanced tuning algorithms or lower power consumption are prioritized over legacy interface support.