CY8C21434-24LTXIT

Overview

The CY8C21434-24LTXIT is an 8-bit microcontroller within the PSoC 1 family, manufactured by Infineon Technologies. It integrates an M8C core with 8KB of Flash memory and 512 bytes of RAM. The device features 28 I/O pins and supports a maximum operating frequency of 24MHz. It operates on a supply voltage range of 2.4V to 5.25V and is housed in a 32-pin QFN package.

Feature Summary

• Integrates programmable analog and digital blocks for mixed-signal applications
• Supports CapSense touch sensing technology for user interface control
• Includes multiple communication interfaces such as SPI, I2C, and UART

Applications

• Capacitive touch sensing controllers
• USB peripheral devices
• LED lighting control systems
• Consumer electronics input modules

Procurement Notes

Verify the manufacturer designation as Infineon Technologies, reflecting the acquisition of Cypress Semiconductor. Confirm the specific suffix LTXIT corresponds to the 32-pin QFN package and tape-and-reel shipping format. Ensure the component meets RoHS compliance standards required for modern electronic assemblies.

Selection Notes

Select this component when an 8-bit MCU requires integrated analog capabilities alongside digital processing. The PSoC architecture allows customization of peripherals via firmware, reducing external component count. Consider the 24MHz speed and 8KB memory capacity for moderate complexity embedded tasks requiring direct sensor interfacing.

Part Context

This part belongs to the PSoC 1 CY8C21xxx series, designed for low-power, cost-sensitive applications. It combines a standard 8051-compatible core with configurable analog blocks. The series is widely used in portable devices where space and power efficiency are critical constraints.

Replacement Considerations

Cross-reference with CY8C21434-24PVXI for SSOP package alternatives. Verify pin compatibility and software register mappings before substituting with other PSoC 1 variants or newer generations like PSoC 4.