CY8C20467-24LQXI

Application Specific Microcontrollers Overview

The CY8C20467-24LQXI is an 8-bit microcontroller from the Cypress Semiconductor CY8C20xx7/S family, housed in a 32-pin QFN package. It integrates an M8C CPU core operating at up to 24 MHz with 16 KB of Flash program memory and 2 KB of SRAM. The device features a dedicated CapSense block supporting up to 25 sensing inputs, utilizing SmartSense Auto-tuning for robust capacitive touch detection. Key electrical specifications include a supply voltage range of 1.71 V to 5.5 V, operation temperatures from -40°C to +85°C, and integrated analog resources such as a 10-bit ADC and comparators.

Application Specific Microcontrollers Feature Summary

• CapSense Controller: Supports up to 25 sensing inputs with QuietZone™ technology and SmartSense Auto-tuning for noise immunity and water tolerance.
• M8C Processor: Harvard-architecture 8-bit CPU running at a maximum frequency of 24 MHz.
• Memory Configuration: Equipped with 16 KB of Flash memory and 2 KB of SRAM data memory.
• Analog & Digital I/O: Includes a 10-bit ADC, two comparators, and up to 28 GPIOs with configurable drive strengths.

Application Specific Microcontrollers Applications

• Capacitive touch interfaces requiring high sensitivity and noise immunity
• Battery-powered devices due to low standby power consumption
• Embedded systems needing mixed-signal processing capabilities

Application Specific Microcontrollers Procurement Notes

Verify the specific memory variant (16 KB Flash/2 KB SRAM) against project requirements, as the CY8C20xx7/S family includes other configurations. Confirm the 32-pin QFN package dimensions and thermal pad grounding requirements during PCB layout. Ensure compatibility with the PSoC Designer development environment for firmware implementation.

Application Specific Microcontrollers Selection Notes

Select this component when a balance of processing power and extensive capacitive sensing channels is required. The 24 MHz clock speed supports complex signal processing alongside touch scanning. Consider the 1.71 V minimum operating voltage for low-power battery applications compared to higher-voltage MCU alternatives.

Application Specific Microcontrollers Part Context

This part belongs to the CY8C20xx7/S series, which distinguishes itself through the integration of SmartSense Auto-tuning and QuietZone™ controller technology. Unlike standard MCUs, it combines a general-purpose processor with specialized analog hardware for capacitive sensing, reducing the need for external components.

Application Specific Microcontrollers Replacement Considerations

Direct pin-compatible replacements within the same package may exist within the CY8C20x37 or CY8C20447 variants, depending on the required Flash and RAM sizes. Verify that any substitute maintains the 32-pin QFN footprint and supports the necessary CapSense input count.