CY8C20434-12LQXI

Overview

The CY8C20434-12LQXI is a PSoC Programmable System-on-Chip featuring an M8C processor with speeds up to 12 MHz. It includes 8 KB of Flash program storage and 512 Bytes of SRAM data storage. The device operates within a voltage range of 2.4 V to 5.25 V and supports an industrial temperature range from –40 °C to +85 °C. It integrates a low power CapSense block for configurable capacitive sensing elements, supporting buttons, sliders, touchpads, and proximity sensors. The architecture allows for flexible on-chip memory with partial flash updates and flexible protection modes.

Feature Summary

• Integrates a powerful Harvard-architecture M8C processor capable of running at speeds up to 12 MHz while maintaining low power consumption.
• Includes a dedicated CapSense analog system that provides hardware algorithms for capacitive sensing and scanning without requiring external components.
• Features programmable pin configurations allowing pull-up, high Z, open-drain, and CMOS drive modes on all GPIOs, with access to the common internal analog bus.

Applications

• Capacitive sensing interfaces such as buttons, sliders, and touchpads
• Proximity sensor applications utilizing the integrated CapSense block
• Systems requiring configurable I2C slave or SPI master-slave communication interfaces

Procurement Notes

Verify the specific ordering suffix against the official Infineon datasheet to ensure correct package type, temperature grade, and lead-free status. Confirm that the component is part of the active Infineon product portfolio as Cypress Semiconductor products have been integrated into the Infineon lineup. Cross-reference the document number 001-05356 Rev. *W for the most current electrical specifications and mechanical dimensions before finalizing procurement.

Selection Notes

Select this component when a design requires a single chip solution replacing multiple traditional MCU-based components. It is suitable for applications needing configurable analog and digital blocks with a fast CPU core. Consider the 8 KB Flash and 512 Bytes SRAM limits for firmware size. Ensure the required number of GPIOs and analog inputs fits within the available ports for the specific package selected.

Part Context

This device belongs to the CY8C20x34 family of PSoC devices, which are designed to replace multiple traditional microcontroller-based system components with one low-cost single-chip programmable component. The family includes variants like CY8C20134, CY8C20234, and CY8C20534, differing primarily in package options and pin counts while sharing the same core architecture and CapSense capabilities.

Replacement Considerations

Direct substitutes within the same family include CY8C20134, CY8C20234, CY8C20334, CY8C20534, and CY8C20634, provided the pinout and package requirements match. Verify compatibility with existing development tools such as PSoC Designer and ensure that the replacement part supports the necessary I/O configurations and memory sizes for the application.