CY8C20347-24LQXI

Application Specific Microcontrollers Overview

The CY8C20347-24LQXI is an 8-bit microcontroller from the Infineon PSoC 21x45/22x45 family, featuring the M8C CPU core. It integrates a CapSense controller with SmartSense Auto-tuning for up to 16 sensing inputs. The device includes 8 KB of Flash memory and 1 KB of SRAM. It operates within a voltage range of 1.71 V to 5.5 V and supports clock speeds up to 24 MHz. Key peripherals include I2C, SPI, three 16-bit timers, and a 10-bit ADC.

Application Specific Microcontrollers Feature Summary

• CapSense Controller: Supports up to 16 capacitive sensing inputs with SmartSense Auto-tuning technology.
• Memory Configuration: Equipped with 8 KB Flash program memory and 1 KB SRAM data memory.
• Processing Core: Utilizes the M8C Harvard-architecture CPU running at a maximum frequency of 24 MHz.
• Communication Interfaces: Includes I2C slave and SPI master/slave modules alongside three 16-bit programmable timers.

Application Specific Microcontrollers Applications

• Capacitive touch sensing interfaces such as buttons and sliders
• Low-power embedded control systems requiring auto-tuning capabilities
• Consumer electronics utilizing proximity sensing features

Application Specific Microcontrollers Procurement Notes

Verify component authenticity through authorized distributors. Confirm package integrity upon receipt. Check datasheet revisions for specific electrical parameter updates. Ensure compliance with RoHS directives if required by the application environment.

Application Specific Microcontrollers Selection Notes

Select this model when 16 CapSense inputs are sufficient. Compare against CY8C20337 variants if fewer sensing channels are needed. Verify that the 8 KB Flash capacity meets firmware storage requirements. Ensure the 24-pin QFN package fits the PCB layout constraints.

Application Specific Microcontrollers Part Context

This part belongs to the CY8C20xx7/S series of 1.8 V CapSense controllers. It shares architectural similarities with the CY8C20337 but offers increased sensing input capacity. The device is designed to replace multiple traditional MCU components with a single programmable chip.

Application Specific Microcontrollers Replacement Considerations

Check for direct pin-compatible alternatives within the CY8C20xx7 family. Verify memory sizes and I/O counts match system requirements. Review errata documents for known silicon issues before finalizing the design substitution.