CY8C20434-12LQXIKC

Overview

The CY8C20434-12LQXI is an 8-bit microcontroller from the PSoC 1 family, utilizing the M8C core. It features 8 KB of Flash program memory and 512 bytes of low-power Capsense RAM. The device operates within a supply voltage range of 2.4 V to 5.25 V and supports a maximum clock frequency of 12 MHz. It is housed in a QFN-32 package with 28 I/O pins.

Feature Summary

• Integrates CapSense technology for capacitive touch sensing capabilities
• Combines programmable analog and digital blocks on a single chip
• Includes internal oscillator for system clock generation

Applications

• Capacitive touch interface controllers
• Low power embedded control systems
• Consumer electronics input devices

Procurement Notes

Verify the exact suffix against official Infineon or Cypress documentation to confirm package type and temperature grade. Ensure the component matches the specific QFN-32 variant required for your PCB layout. Cross-reference the manufacturer part number with current datasheets to validate availability and revision status before procurement.

Selection Notes

Select this component when a compact solution integrating both general-purpose I/O and capacitive touch sensing is required. The 12 MHz speed and 8 KB memory are suitable for moderate complexity firmware tasks. Consider the QFN-32 package constraints for thermal management and board space limitations compared to larger packages.

Part Context

This part belongs to the PSoC 1 CY8C20xxx series, which merges an 8-bit processor with configurable analog and digital peripherals. The series is designed to reduce external component counts by integrating functions typically found on separate chips into a single System-on-Chip (SoC) solution.

Replacement Considerations

Check for CY8C20434 variants with different suffixes indicating alternate packages or temperature ranges. Verify compatibility with CY8C20xxx family members that share the same M8C core but offer different memory sizes or pin counts.