CY8C20224-12LKXI

Overview

The CY8C20224-12LKXI is an 8-bit microcontroller from the Infineon PSoC 1 family, utilizing the M8C core. It features 8 KB of flash program storage and 512 bytes of SRAM data memory. The device operates within a voltage range of 2.4 V to 5.25 V and supports a maximum clock frequency of 12 MHz. It includes configurable CapSense capabilities for up to 25 buttons and one slider, along with up to 28 general-purpose I/O pins.

Feature Summary

• Configurable capacitive sensing hardware supporting buttons, sliders, and proximity detection without external components
• Integrated internal oscillators including a main oscillator and low-speed oscillator eliminating need for external crystals
• Programmable system-on-chip architecture allowing customization of analog and digital peripherals via user modules
• Supports in-system serial programming and partial flash updates for field reprogramming

Applications

• Capacitive touch interface designs for multimedia keys
• Proximity sensing applications requiring finger detection through dielectric layers
• Low-power embedded systems utilizing sleep modes and watchdog timers
• General-purpose I/O control with integrated LED driving capabilities

Procurement Notes

Verify the specific package type corresponding to the suffix 'LQ' or 'LK' against the official datasheet pinout diagrams. Confirm that the ordering part number matches the exact memory and speed configuration required. Ensure compatibility with the PSoC Designer development environment for firmware generation. Check for any RoHS compliance documentation associated with the manufacturing date code.

Selection Notes

Select this component when a low-cost 8-bit MCU with integrated capacitive sensing is required. It is suitable for applications needing flexible I/O configurations and programmable analog blocks. Consider the 12 MHz performance limit and 8 KB memory constraint for complex algorithms. Evaluate the QFN package options if space constraints are critical compared to SSOP alternatives.

Part Context

This device belongs to the Cypress Semiconductor (now Infineon) PSoC 1 family, specifically the CY8C20x24 series. These devices are designed to replace multiple traditional MCU-based system components with a single programmable chip. The architecture combines a fast CPU with configurable analog and digital blocks, enabling customized peripheral configurations for various embedded applications.

Replacement Considerations

Consult the official datasheet for direct pin-compatible substitutes within the CY8C20324, CY8C20424, or CY8C20524 families. Verify functional equivalence regarding CapSense channel counts and I/O availability before substitution.