CY8C21345-24SXI

Overview

The Infineon CY8C21345-24SXI is an 8-bit microcontroller based on the PSoC architecture, housed in a 28-pin SOIC package. It features an M8C processor core operating at speeds up to 24 MHz with Harvard architecture. The device includes 8 KB of Flash program memory and 512 bytes of SRAM data storage. It provides up to 24 configurable digital I/O pins and supports industrial temperature ranges from -40 °C to +85 °C.

Feature Summary

• Configurable analog and digital system blocks allow custom peripheral creation
• Integrated CapSense resource with dedicated clocking for touch sensing
• Flexible internal clocking with options for crystal or external oscillator input
• Supports multiple communication interfaces including I2C, SPI, and UART

Applications

• Capacitive touch sensing applications
• Industrial control systems requiring programmable logic
• Low-power embedded devices with mixed-signal requirements
• Custom sensor interface designs

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature grade. Confirm that the component source is authorized to ensure silicon authenticity. Check for any applicable RoHS compliance documentation relevant to your region's regulations before finalizing procurement.

Selection Notes

Select this part when fixed-function peripherals are insufficient for the design. Evaluate the available digital and analog block resources against application needs. Ensure the 24 MHz clock speed meets timing requirements. Consider the 28-pin SOIC footprint constraints during PCB layout planning.

Part Context

This component belongs to the CY8C21x45 family within the PSoC 1 series. It shares architectural similarities with the CY8C22345 but offers fewer I/O pins. The device utilizes the M8C core and PSoC Blocks for hardware configurability, distinguishing it from standard fixed-peripheral microcontrollers.

Replacement Considerations

Direct substitutes include other members of the CY8C21x45 family such as the CY8C21345-24PXI. Verify pin compatibility and resource availability when considering alternative packages or variants within the same manufacturer's portfolio.