CY8C20434-12LQXI

Overview

The CY8C20434-12LQXI is an 8-bit microcontroller from the PSoC family, featuring an M8C processor core with speeds up to 12 MHz. It includes 8 KB of flash program storage and 512 bytes of SRAM data storage. The device supports a supply voltage range of 2.4 V to 5.25 V and operates within an industrial temperature range of –40 °C to +85 °C. It provides up to 28 general-purpose I/O pins accessible via a common analog bus.

Feature Summary

• Integrates a low power CapSense block for configurable capacitive sensing elements including buttons, sliders, touchpads, and proximity sensors.
• Features a powerful Harvard-architecture M8C processor optimized for low power consumption at high speeds.
• Includes flexible on-chip memory with partial flash updates and multiple protection modes.
• Provides programmable pin configurations supporting pull-up, high Z, open-drain, and CMOS drive modes.

Applications

• Capacitive sensing interfaces such as sliders and touch pads
• Complex capacitive sensing applications requiring hardware scanning control
• Systems utilizing configurable communication speeds like I2C or SPI

Procurement Notes

Verify the component manufacturer status, as Cypress Semiconductor is now part of Infineon Technologies. Confirm that ordering part numbers remain supported under the new portfolio. Ensure compatibility with existing design tools and documentation references specific to the CY8C20x34 family.

Selection Notes

Select this model for designs requiring integrated capacitive sensing capabilities alongside standard microcontroller functions. Consider the 12 MHz clock speed and available I/O count relative to system requirements. Evaluate the package options to ensure physical fit and thermal performance within the target application constraints.

Part Context

This component belongs to the CY8C20x34 series of PSoC Programmable System-on-Chips. These devices are designed to replace multiple traditional MCU-based components with a single chip. The architecture combines configurable analog and digital blocks with a fast CPU and programmable interconnect.

Replacement Considerations

Consult official datasheets for cross-referencing with other CY8C20x34 variants. Verify functional equivalence regarding pinout, memory size, and peripheral availability before substitution.