CY8C22645-12PVXE

Overview

The CY8C22645-12PVXE is an 8-bit microcontroller unit (MCU) belonging to the Cypress PSoC 1 family, specifically the CY8C22xxx series. It integrates an M8C processor core with a maximum operating frequency of 12 MHz. The device features 32 KB of in-system programmable flash memory and 2048 bytes of RAM. It utilizes a 28-pin SSOP package and operates within a supply voltage range of 2.4 V to 5.25 V. The component supports industrial temperature ranges from -40°C to +85°C and includes built-in CapSense technology for capacitive touch sensing applications.

Feature Summary

• Integrates CapSense technology for capacitive touch sensing without external components
• Combines digital logic blocks with analog signal processing capabilities on a single chip
• Supports in-system programming via serial interfaces such as SPI or I2C
• Provides configurable analog and digital peripherals through programmable system blocks

Applications

• Capacitive touch keypads and buttons
• Consumer electronics control interfaces
• Industrial control panels
• White goods user interfaces

Procurement Notes

Verify the specific suffix PVXE against official Cypress/Infineon documentation to confirm package type and temperature grade. Ensure compatibility with existing firmware tools, as PSoC 1 devices require specific programming hardware and software environments. Confirm RoHS compliance status if required by your manufacturing standards. Cross-reference the part number with current Infineon portfolios, as Cypress Semiconductor assets have been acquired.

Selection Notes

Select this component when a low-pin-count MCU requires integrated analog-digital functionality and touch sensing. The CY8C22645 offers sufficient flash memory for moderate application complexity while maintaining a compact footprint. Consider the 12 MHz speed limit for timing-critical tasks. Evaluate pin availability against interface requirements, as the 28-pin SSOP limits available GPIOs compared to larger packages.

Part Context

This part belongs to the PSoC 1 architecture, which merges a standard 8-bit CPU with reconfigurable analog and digital peripheral blocks. The CY8C22xxx series focuses on cost-effective solutions for touch sensing and general-purpose control. Unlike traditional MCUs, it allows designers to customize peripheral configurations post-fabrication, reducing bill-of-materials count by integrating functions that would otherwise require separate chips.

Replacement Considerations

Check for direct substitutes within the CY8C22xxx family with different memory sizes or package options. Verify if newer generations like PSoC 4 or PSoC 5LP are suitable alternatives, noting significant architectural differences. Ensure any replacement supports the same CapSense library versions if touch functionality is critical.