Cypress Semiconductor Corp CY7C68003-20FNXI

Overview

CY7C68003-20FNXI from Cypress Semiconductor is a USB 2.0 Full Speed and High Speed compliant ULPI transceiver in a 20-pin WLCSP (2.14 × 1.76 mm, 0.4 mm pitch), supporting 1.8–3.3 V I/O, integrated 13/19.2/24/26 MHz PLL, and industrial temperature range (−40 °C to +85 °C). It operates in device mode only, integrates USB pull-up/termination resistors, and delivers 30 mA nominal active HS current with 5 µA sleep mode draw-optimized for mobile handset connectivity.

For engineers reviewing the CY7C68003-20FNXI datasheet, CY7C68003-20FNXI pinout, CY7C68003-20FNXI application, or CY7C68003-20FNXI equivalent, key selection criteria include ULPI SDR 8-bit interface compliance, multi-voltage I/O support, integrated oscillator/PLL architecture, UART pass-through capability via DP/DM, and WLCSP package constraints for space-constrained portable designs.

Technical Context

The CY7C68003-20FNXI implements UTMI+ Level 0 interface logic with full USB 2.0 FS/HS PHY compliance and supports synchronous ULPI data transfer at up to 60 MHz (SDR). Its internal PLL accepts 13, 19.2, 24, or 26 MHz reference inputs and generates precise USB clocking without external frequency synthesis.

It features dual power domains: 1.8 V core (VCC, 1.7–1.9 V), multi-range I/O (VIO, 1.7–3.6 V), and battery-supplied VBATT (3.0–5.775 V) feeding an internal 3.3 V regulator. The device supports five operation modes-including Normal, Sleep, ULPI Low Power, Carkit UART Pass-Through, and Configuration-with RESET_N-driven state transitions and no required power sequencing.

Key Specifications

Pinout & Package

Package: 20-pin WLCSP (2.14 × 1.76 mm, 0.4 mm pitch), ball-grid layout with VSS and VSSBATT dedicated ground planes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 2.0 ULPI transceiver applications.

Compared with SMSC USB3317C-EZK and Microchip USB2502-E/P, the CY7C68003-20FNXI offers unique value in ultra-compact device-only USB connectivity with integrated UART pass-through-making it optimal for space- and power-constrained mobile handsets where dual-role or hub functionality is unnecessary.

Availability

CY7C68003-20FNXI is available at Aetrix Electronics and suitable for mobile handsets, portable media players, DTV set-top boxes, and portable GPS receivers requiring stable component supply, long-term lifecycle support, and verified industrial temperature performance.

Supply support for CY7C68003-20FNXI 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

Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in programmable system-on-chip (PSoC), memory, and USB connectivity solutions for embedded systems.

The MoBL-USB™ TX2UL product line was designed specifically for mobile handset and portable consumer electronics requiring minimal footprint, ultra-low power USB 2.0 device connectivity with integrated analog functions.

FAQ

Does CY7C68003-20FNXI support USB host mode?

No. The CY7C68003-20FNXI is a USB 2.0 device-only transceiver and does not implement host controller logic or UTMI+ host-side signaling. It connects exclusively as a peripheral to a USB host controller via ULPI interface and requires external host-side PHY or controller support.

What crystal specifications are required for XI/XO operation?

A parallel-resonant, fundamental-mode crystal with 13/19.2/24/26 MHz nominal frequency (±100 ppm tolerance), 750 µW drive level, 12 pF load capacitance (±5%), and ≤60 Ω ESR is required. Trace capacitance must be accounted for-typically 3 pF per side on FR4 PCBs.

How is UART pass-through mode enabled and used?

UART pass-through is activated by setting the Carkit Mode bit (bit 0) in the Interface Control Register during normal operation. DATA[0] maps to DM (TXD output), DATA[1] maps to DP (RXD input), and the internal USB clock is powered down-enabling DP/DM to function as a half-duplex UART link without external transceivers.

Is the 20-pin WLCSP package RoHS and REACH compliant?

Yes. The CY7C68003-20FNXI in 20-pin WLCSP packaging meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006 requirements, including lead-free solderability and absence of SVHC substances above threshold limits per manufacturer documentation.