Infineon Technologies CY7C65217-24LTXIT

Overview

CY7C65217-24LTXIT from Infineon is a USB 2.0 Full-speed (12 Mbps) Billboard controller IC for USB Type-C Alternate Mode devices, featuring dual-channel UART/I2C serial interfaces, 7 GPIOs, integrated 48-MHz oscillator, and 2560-byte configurable flash memory. It operates from 1.71 V to 5.5 V and supports commercial (0°C to 70°C), industrial (–40°C to 85°C), and automotive (–40°C to 105°C) temperature grades.

For engineers reviewing the CY7C65217-24LTXIT datasheet, CY7C65217-24LTXIT pinout, CY7C65217-24LTXIT application, or CY7C65217-24LTXIT equivalent, key selection criteria include dual UART/I2C support with 115200 bps max data rate, native Windows 10 Billboard Device Class driver compatibility, bus- or self-powered operation, and QFN-24 package integration with embedded USB termination resistors.

Technical Context

The CY7C65217 implements a USB Serial Interface Engine (SIE) compliant with USB 2.0 Full-speed specification and Billboard Device Class v1.1, enabling enumeration as a standardized descriptor provider for USB Type-C Alternate Mode failures. Its dual SCB (Serial Communication Block) units operate independently: SCB0 as I2C master (up to 400 kHz), SCB1 as UART (7/8-bit data, 1/2 stop bits, configurable parity).

Power architecture includes internal voltage regulation supporting both bus-powered (VBUS 3.15–5.25 V) and self-powered (VDDD 1.71–5.5 V) modes, with dedicated analog (VSSA) and digital (VSSD) ground planes. Suspend/resume signaling is hardware-assisted via SUSPEND output and WAKEUP input pins, while configuration persistence relies on 2560 bytes of on-chip flash memory storing Billboard descriptors and interface settings.

Key Specifications

Pinout & Package

Package: 24-lead QFN (4.0 mm × 4.0 mm, 0.5-mm pitch, 0.55-mm height), RoHS-compliant, with exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB Billboard controller applications.

Compared with CY7C65217A-24LTXIT and CY7C65210-24LTXIT, the CY7C65217-24LTXIT uniquely balances dual-protocol serial connectivity (UART + I2C), moderate GPIO count (7), and full suspend/wakeup hardware support - making it optimal for mid-tier docking stations needing both debug telemetry and power-aware operation.

Availability

CY7C65217-24LTXIT is available at Aetrix Electronics and suitable for USB Type-C dongles, docking stations, monitors, and automotive infotainment hubs requiring stable component supply, long-term lifecycle assurance, and automotive-grade temperature support.

Supply support for CY7C65217-24LTXIT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensing, connectivity, and security solutions for industrial, automotive, and consumer markets.

The CY7C6521x series was designed specifically to simplify USB Type-C Alternate Mode implementation by integrating Billboard functionality, USB PHY, clocking, and configuration memory into a single QFN package - targeting compact, cost-sensitive USB-C accessories.

FAQ

Does CY7C65217-24LTXIT require an external crystal?

No. The device integrates a factory-trimmed 48-MHz oscillator that meets USB Full-speed timing requirements, eliminating the need for an external crystal or resonator. This reduces bill-of-materials cost and PCB layout complexity while maintaining ±0.25% frequency accuracy over temperature and voltage ranges specified in the datasheet.

Can CY7C65217-24LTXIT operate in bus-powered mode only?

Yes. It supports both bus-powered (using VBUS 3.15–5.25 V) and self-powered (using VDDD 1.71–5.5 V) configurations. In bus-powered mode, internal regulators derive VCCD and VDDD from VBUS; in self-powered mode, VDDD directly supplies the core and interfaces, bypassing the VBUS regulator path.

What is the maximum UART baud rate supported?

The UART interface supports data rates up to 115200 bps with configurable framing: 7 or 8 data bits, 1 or 2 stop bits, and parity options (none, even, odd, mark, space). Higher rates are not supported - the SCB hardware limits UART clock division to achieve this maximum under all operating conditions.

How is Billboard descriptor content configured?

Descriptors are stored in the 2560-byte on-chip flash memory and programmed using Infineon's USB-Serial Configuration Utility (USBUARTConfig.exe) via USB. The utility writes vendor-defined bcdDevice, iManufacturer, iProduct, and Alternate Mode-specific descriptors, which persist across power cycles without external memory.