CY8C21234-24SXI

Overview

The CY8C21234-24SXI is an 8-bit microcontroller from Infineon's PSoC family, utilizing the M8C core. It features 8 kB of Flash program memory and 512 B of SRAM data RAM. The device operates at a maximum clock frequency of 24 MHz within a voltage range of 2.4 V to 5.25 V. It includes one 10-bit Delta-Sigma ADC with 28 channels, two analog comparators, and an 8-bit DAC. Connectivity is provided via I2C, SPI, and UART interfaces. The component supports CapSense technology with eight dedicated CapSense I/Os and twelve general-purpose I/O pins. It is housed in a 16-pin SOIC package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates configurable digital and analog peripherals with an 8-bit microcontroller for system-level flexibility
• Supports capacitive touch sensing through integrated CapSense Plus technology
• Combines mixed-signal capabilities including Delta-Sigma ADC and analog comparators on a single chip

Applications

• Consumer electronics requiring low pin count and mixed-signal processing
• Industrial equipment control systems
• Communications devices needing serial interface connectivity

Procurement Notes

Verify the specific suffix '24SXI' against official Infineon documentation to confirm the 24 MHz speed grade and SOIC-16 package variant. Ensure compliance with RoHS standards as indicated in distributor listings. Confirm moisture sensitivity levels and recommended soldering profiles prior to assembly. Cross-reference the manufacturer part number with authorized distribution channels to avoid counterfeit components.

Selection Notes

Select this component when an 8-bit architecture suffices for application logic while requiring integrated analog signal conditioning. The high channel count of the Delta-Sigma ADC makes it suitable for sensor interfacing without external multiplexers. Consider the limited GPIO count relative to total pin availability when designing board layouts. Evaluate power consumption requirements against the specified operating voltage range.

Part Context

This part belongs to the CY8C21x34 series of Programmable System-on-Chip (PSoC) devices. These controllers are designed to reduce design time and board space by integrating diverse peripherals into a single IC. The series targets markets such as consumer, computation, communications, automotive, and industrial equipment, offering a complete system-level solution with programmable analog and digital blocks.

Replacement Considerations

Consult official Infineon substitution guides for verified equivalents. Generic MCU replacements may lack the specific PSoC analog configurability or CapSense integration required by the original design.