CY8C20324-12LQXI

Overview

The CY8C20324-12LQXI 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 up to 28 general-purpose I/O pins and integrates configurable CapSense technology for capacitive sensing applications.

Feature Summary

• Integrates low-power CapSense technology supporting up to 25 buttons, one slider, and proximity sensing without external components.
• Features a high-performance M8C CPU core with internal oscillators, eliminating the need for external crystals or regulators.
• Provides flexible system resources including I2C slave, SPI master/slave interfaces, and watchdog timers.

Applications

• Capacitive touch interface designs for multimedia keys
• Proximity sensing systems requiring low component count
• Low-voltage embedded control applications

Procurement Notes

Verify the specific ordering suffix against the official Infineon datasheet to ensure correct package type and temperature rating. Confirm that the requested part number matches the exact revision required for your design, as continuity of ordering part numbers is maintained by Infineon. Always reference the latest document version for accurate electrical specifications.

Selection Notes

Select this component when designing systems requiring integrated capacitive sensing capabilities alongside standard microcontroller functions. The device is suitable for applications needing low external component counts due to its internal oscillators and LDO. Ensure the application voltage falls within the specified 2.4 V to 5.25 V range and that the 8 KB Flash capacity meets code storage requirements.

Part Context

This device belongs to the PSoC 1 CapSense family, which combines programmable analog and digital blocks with an 8-bit CPU. The CY8C20x24 series is designed to replace multiple traditional MCU-based components with a single chip. It utilizes the PSoC architecture to allow customization of peripherals via the PSoC Designer software environment.

Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the CY8C20224, CY8C20424, or CY8C20524 families. Verify functional equivalence regarding CapSense channel counts and memory sizes before substitution.

FAQ

Does the CY8C20324 require external components for capacitive sensing?

No, the device performs capacitive sensing and scanning without requiring external components, leveraging its internal analog multiplexer and CapSense block.

What is the maximum operating speed of the M8C core in this device?

The M8C core supports speeds up to 12 MHz, driven by the internal main oscillator.

Can the device operate without an external crystal?

Yes, the device includes an internal ±5.0% 6 or 12 MHz main oscillator, eliminating the need for external crystal or oscillator components.