CY8C28645-24LTXI

Overview

The CY8C28645-24LTXI is an 8-bit microcontroller from the Infineon PSoC 1 family, utilizing the M8C core with a maximum clock frequency of 24 MHz. It features 16 KB of Flash program memory and 1 KB of SRAM data storage. The device is housed in a QFN-48 package and supports up to 44 I/O pins. Operating voltage ranges from 3.0 V to 5.25 V, with extended support down to 1.5 V via an on-chip switched mode pump. It includes a dedicated 10-bit SAR ADC and operates within an industrial temperature range of -40 °C to +85 °C.

Feature Summary

• Features reconfigurable analog and digital PSoC blocks for custom peripheral creation
• Integrates CapSense technology for capacitive touch sensing applications
• Supports direct LCD driving capabilities without external drivers
• Includes hardware I2C resources supporting master, slave, and multi-master modes

Applications

• Industrial control systems
• Communication base station management
• White home appliances
• Consumer electronics requiring capacitive touch interfaces

Procurement Notes

Verify the specific ordering suffix against official Infineon documentation to ensure correct package type and temperature rating. Confirm RoHS compliance status through current datasheets as manufacturing processes may evolve. Check for any silicon errata sheets relevant to this revision before finalizing design integration.

Selection Notes

Select this component when a flexible mixed-signal architecture is required to replace multiple discrete components. The CY8C28645-24LTXI offers extensive programmable analog and digital resources suitable for complex signal processing tasks. Ensure the application benefits from the reconfigurable nature of the PSoC blocks to optimize board space and system cost.

Part Context

This part belongs to the CY8C28xxx subgroup of the PSoC 1 family, which provides a full feature set including all available digital and analog blocks. It maintains pin and software compatibility with other devices in the CY8C27xxx series, facilitating migration paths for existing designs while offering enhanced analog performance and resource density.

Replacement Considerations

CY8C28643-24LTXI

FAQ

Does the CY8C28645-24LTXI support capacitive touch sensing?

Yes, the device integrates CapSense technology, allowing for the implementation of capacitive touch buttons and sliders directly on the chip.

What is the lowest operating voltage supported by this MCU?

While the standard operating range is 3.0 V to 5.25 V, the device can operate down to 1.5 V using its internal switched mode pump (SMP).