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Home  Product Technical Articles   USB3320C-EZK Transceiver: CAD Models, Datasheet, Features [FAQ]

USB3320C-EZK Transceiver: CAD Models, Datasheet, Features [FAQ]

Author: Lydia
Date: 16 Nov 2022


Product Overview

USB3320C-EZK CAD Models

USB3320C-EZK Pin Configuration

USB3320C-EZK Block Diagram

USB3320C-EZK Features

USB3320C-EZK Applications

USB3320C-EZK Datasheet

USB3320C-EZK Specifications

USB3320C-EZK Manufacturer

Using Warning



Product Overview

The Microchip USB3320 is a Hi-Speed USB 2.0 Transceiver that provides a configurable physical layer (PHY) solution and is an excellent match for a wide variety of products.


The frequency of the reference clock is user selectable. The USB3320 includes an internal oscillator that may be used with either a quartz crystal or a ceramic resonator. Alternatively, the crystal input can be driven by an external clock oscillator. Another option is the use of a 60MHz external clock when using the ULPI Input Clock mode.


Several advanced features make the USB3320 the transceiver of choice by reducing both electrical bill of material (eBOM) part count and printed circuit board (PCB) area. Outstanding ESD robustness eliminates the need for external ESD protection devices in typical applications. The internal Over-Voltage Protection circuit (OVP) protects the USB3320 from voltages up to 30V. By using a reference clock from the Link, the USB3320 removes the cost of a dedicated crystal reference from the design. And the integrated USB switch enables unique product features with a single USB port of connection.


The USB3320 meets all of the electrical requirements to be used as a Hi-Speed USB Host, Device, or an On-the-Go (OTG) transceiver. In addition to the supporting USB signaling, the USB3320 also provides USB UART mode and USB Audio mode.


USB3320 uses the industry standard UTMI+ Low Pin Interface (ULPI) to connect the USB Transceiver to the Link. ULPI uses a method of in-band signaling and status byte transfers between the Link and transceiver to facilitate a USB session with only 12 pins.


The USB3320 uses Microchip’s “wrapper-less” technology to implement the ULPI interface. This “wrapper-less” technology allows the transceiver to achieve a low latency transmit and receive time. Microchip’s low latency transceiver allows an existing UTMI Link to be reused by adding a UTMI to ULPI bridge. By adding a bridge to the ASIC the existing and proven UTMI Link IP can be reused.


USB3320C-EZK CAD Models

USB3320C-EZK PCB Symbol

Figure: USB3320C-EZK PCB Symbol



 USB3320C-EZK Footprint

Figure: USB3320C-EZK Footprint



 USB3320C-EZK 3D Models

Figure: USB3320C-EZK 3D Models


USB3320C-EZK Pin Configuration

USB3320C-EZK Pin Configuration

Figure: USB3320C-EZK Pin Configuration


USB3320C-EZK Block Diagram

USB3320C-EZK Block Diagram

Figure: USB3320C-EZK Block Diagram


USB3320C-EZK Features

  • Integrated ESD protection circuits

- Up to ±15kV IEC Air Discharge without external devices

  • Over-Voltage Protection circuit (OVP) protects theVBUS pin from continuous DC voltages up to 30V
  • Integrated USB Switch

- No degradation of Hi-Speed electrical characteristics

- Allows single USB port of connection by providing switching function for:

–Battery charging

–Stereo and mono/mic audio

–USB Full-Speed/Low-Speed data

  • flexPWR® Technology

- Low current design ideal for battery powered applications

- “Sleep” mode tri-states all ULPI pins and places the part in a low current state

- 1.8V to 3.3V IO Voltage (±10%)

  • Integrated battery to 3.3V regulator

- 2.2uF bypass capacitor

- 100mV dropout voltage

  • “Wrapper-less” design for optimal timing performance and design ease

- Low Latency Hi-Speed Receiver (43 HiSpeed clocks Max) allows use of legacy UTMI Links with a ULPI bridge

  • Selectable Reference Clock Frequency

- Frequencies: 12, 13, 19.2, 24, 26, 27, 38.4, 52 or 60MHz - pin selectable

  • External Reference Clock operation available

- ULPI Input Clock Mode (60MHz sourced by Link)

- 0 to 3.6V input drive tolerant

- Able to accept “noisy” clock sources as reference to internal, low-jitter PLL

  • Internal Oscillator operation available
  • This mode requires external Quartz Crystal or Ceramic Resonator
  • Smart detection circuits allow identification of USB charger, headset, or data cable insertion
  • Includes full support for the optional On-The-Go (OTG) protocol detailed in the On-The-Go Supplement Revision 2.0 specification
  • Supports Headset Audio Mode
  • Supports the OTG Host Negotiation Protocol (HNP) and Session Request Protocol (SRP)
  • UART mode for non-USB serial data transfers
  • Internal 5V cable short-circuit protection of ID, DP and DM lines to VBUS or ground
  • Industrial Operating Temperature -40°C to +85°C
  • 32-pin, QFN RoHS Compliant Package (5 x 5 x 0.90 mm height)


USB3320C-EZK Applications

The USB3320 is targeted for any application where a Hi-Speed USB connection is desired and when board space, power, and interface pins must be minimized.


The USB3320 is well suited for:

  • Networking
  • Audio Video
  • Medical
  • Industrial Computers
  • Printers
  • Repeaters
  • Communication


USB3320C-EZK Datasheet

You can download the datasheet from the link given below:

USB3320C-EZK Datasheet


USB3320C-EZK Specifications

Type  Description
Category Integrated Circuits (ICs)
Drivers, Receivers, Transceivers
Mfr Microchip Technology
Series flexPWR™
Package Tray
Product Status Active
Type Transceiver
Protocol USB 2.0
Duplex Half
Receiver Hysteresis 50 mV
Voltage - Supply 1.8V ~ 3.3V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package / Case 32-VFQFN Exposed Pad
Supplier Device Package 32-QFN (5x5)
Base Product Number USB3320


USB3320C-EZK Manufacturer

Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.


Using Warning

Note: Please check their parameters and pin configuration before replacing them in your circuit.



What is USB transceiver?

The universal serial bus (USB) transceiver family includes high-speed USB OTG ULPI (UTMI+ low pin interface) transceivers and full-speed OTG (On-The-Go) transceivers. They provide a complete solution for connecting a digital USB OTG and ULPI controller to a physical universal serial bus.


What is USB PHY?

The USB 2.0 PHY IP is a full-featured on-chip physical transceiver. It has Electro Static Discharge (ESD) protection and fully supports all OTG and host functionality. An optional charge pump generates a 5V supply to power external USB peripherals while in host mode.


Is a dongle the same as a flash drive?

A dongle is a small device, typically about the size of a flash drive, that plugs into a computer. Some dongles act as security keys while others serve as adapters. While early dongles connected to parallel ports on PCs and ADB ports on Macs, modern versions typically connect to a USB port.


Ordering & Quality

Photo Mfr. Part # Company Description Package PDF Qty Pricing
USB3320C-EZK USB3320C-EZK Company:Microchip Technology Remark:IC TRANSCEIVER HALF 1/1 32QFN Package:32-VFQFN Exposed Pad
In Stock:1782
1+: $1.55000
25+: $1.29000
100+: $1.19700
USB3320C-EZK-TR USB3320C-EZK-TR Company:Microchip Technology Remark:IC TRANSCEIVER HALF 1/1 32QFN Package:32-VFQFN Exposed Pad
In Stock:On Order
5000+: $1.19700

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