CYPD4126-40LQXIT

Application Specific Microcontrollers Overview

The CYPD4126-40LQXIT is a dual-port USB Type-C controller from the EZ-PD™ CCG4 family, designed for notebooks and docking stations. It integrates two complete Type-C transceivers with integrated termination resistors (RP/RD) and VCONN FETs. The device features a 48-MHz Arm® Cortex®-M0 processor, 128 KB flash, and 8 KB SRAM. It supports USB Power Delivery 3.0, including fast role swap and extended data messaging. Operating voltage ranges from 2.7 V to 5.5 V, with an independent GPIO supply supporting 1.71 V to 5.5 V signaling. The component is housed in a 40-pin QFN package.

Application Specific Microcontrollers Feature Summary

• Dual USB Type-C port support with integrated BMC transceivers and PD 3.0 compliance
• 48-MHz Arm® Cortex®-M0 MCU with 128 KB Flash and 8 KB SRAM
• Integrated VCONN FETs for EMCA cable power and dead battery termination
• Four configurable Serial Communication Blocks (I2C, SPI, UART)

Application Specific Microcontrollers Applications

• Notebooks
• Docking stations
• Power adapters

Application Specific Microcontrollers Procurement Notes

Verify the 'T' suffix indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status via the manufacturer's latest documentation. Ensure the specific revision of the datasheet matches the production batch requirements for firmware compatibility.

Application Specific Microcontrollers Selection Notes

Select this model for applications requiring dual USB-C ports with independent control. The 40-pin QFN package suits space-constrained designs. Verify that the host system can accommodate the required I2C/SPI interfaces provided by the four SCBs for configuration and monitoring.

Application Specific Microcontrollers Part Context

This part belongs to the EZ-PD™ CCG4 family, which provides programmable USB Type-C solutions. It shares the core MCU architecture with other CCG4 variants like the CYPD4226 but differs in pinout and peripheral allocation tailored for single-port or dual-port configurations.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the same package include other CCG4 variants such as CYPD4226-40LQXI, though pin mapping and firmware must be verified. Cross-family migration to CCG5 or CCG6 requires significant hardware and software redesign.