CY8C21345-24SXIT

Overview

The CY8C21345-24SXIT is an 8-bit microcontroller from the Infineon PSoC 1 family, featuring the M8C processor core with speeds up to 24 MHz. It integrates 8 KB of Flash program memory and 512 bytes of SRAM data storage within a 28-pin SOIC package. The device supports an operating voltage range of 3.0 V to 5.25 V and functions across an industrial temperature range of –40 °C to +85 °C. Key peripherals include a 10-bit SAR ADC, CapSense resources, and configurable digital and analog blocks.

Feature Summary

• Configurable analog and digital system architecture allowing custom peripheral implementation
• Integrated CapSense technology for capacitive touch sensing applications
• Flexible on-chip memory with in-system serial programming capabilities
• Programmable GPIOs with multiple drive modes and interrupt support

Applications

• Capacitive touch interface controllers
• Industrial control systems requiring programmable logic
• Battery-powered devices utilizing low-power sleep modes
• Embedded sensor signal conditioning and acquisition

Procurement Notes

Verify the specific ordering suffix against official Infineon documentation to confirm package type and temperature grade. Ensure compatibility with the PSoC Designer development environment for configuration. Confirm supply status through authorized distributors as availability may vary by region.

Selection Notes

Select this component when a fixed-function MCU lacks the flexibility for mixed-signal customization. The PSoC architecture suits designs needing reconfigurable analog blocks or specific digital protocols without external chips. Evaluate resource usage against the available digital and analog block counts before finalizing the part number.

Part Context

This device belongs to the CY8C21x45 series within the broader PSoC 1 portfolio. It shares architectural similarities with the CY8C22345 and CY8C22545 but offers distinct pin counts and I/O configurations. The series emphasizes low-cost integration of processing and programmable analog/digital resources.

Replacement Considerations

Direct substitutes within the same family include CY8C21345 variants with different package suffixes. Cross-family replacements require careful evaluation of pin compatibility and resource availability. Verify that alternative parts support the required CapSense channels and memory sizes.

FAQ

What is the maximum clock frequency of the M8C core?

The M8C processor core operates at speeds up to 24 MHz.

Does the device support capacitive touch sensing?

Yes, it includes optimized CapSense resources with dedicated clocking and timer/counters for scanning.

What is the resolution of the integrated ADC?

The device features a high-speed 10-bit SAR ADC with sample and hold functionality.