UCS2112
Dual USB Port Power
Evaluation Board
User’s Guide
2015 Microchip Technology Inc.
DS50002420A
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
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OTHERWISE, RELATED TO THE INFORMATION,
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suits, or expenses resulting from such use. No licenses are
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer,
LANCheck, MediaLB, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, PICSTART, PIC32 logo, RightTouch, SpyNIC,
SST, SST Logo, SuperFlash and UNI/O are registered
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
The Embedded Control Solutions Company and mTouch are
registered trademarks of Microchip Technology Incorporated
in the U.S.A.
Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo,
CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit
Serial Programming, ICSP, Inter-Chip Connectivity, KleerNet,
KleerNet logo, MiWi, motorBench, MPASM, MPF, MPLAB
Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach,
Omniscient Code Generation, PICDEM, PICDEM.net, PICkit,
PICtail, RightTouch logo, REAL ICE, SQI, Serial Quad I/O,
Total Endurance, TSHARC, USBCheck, VariSense,
ViewSpan, WiperLock, Wireless DNA, and ZENA are
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip
Technology Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2015, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
ISBN: 978-1-63277-810-9
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
DS50002420A-page 2
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
2015 Microchip Technology Inc.
Object of Declaration: UCS2112 Dual USB Port Power Evaluation Board
2015 Microchip Technology Inc.
DS50002420A-page 3
NOTES:
DS50002420A-page 4
2015 Microchip Technology Inc.
UCS2112 DUAL USB PORT POWER
EVALUATION BOARD USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 7
Introduction............................................................................................................ 7
Document Layout .................................................................................................. 7
Conventions Used in this Guide ............................................................................ 8
Recommended Reading........................................................................................ 9
The Microchip Web Site ........................................................................................ 9
Customer Support ................................................................................................. 9
Document Revision History ................................................................................... 9
Chapter 1. Product Overview
1.1 Introduction ................................................................................................... 11
1.2 UCS2112 Evaluation System ....................................................................... 11
1.3 What the UCS2112 Dual USB Port Power Evaluation Board Kit Contains .. 12
Chapter 2. Installation and Operation
2.1 Introduction ................................................................................................... 13
2.2 Connectors on the Evaluation Board ............................................................ 13
2.3 LEDs on the Evaluation Board ..................................................................... 14
2.4 Test Points on the Evaluation Board ............................................................ 15
2.5 Software Installation ..................................................................................... 16
Chapter 3. Hardware Description
3.1 UCS2112 Device Overview .......................................................................... 21
3.2 USB84604 Device ........................................................................................ 21
3.3 DC-DC converter with MCP19118 ............................................................... 21
Chapter 4. Software Description
4.1 Overview ...................................................................................................... 23
4.2 Interface Description and Operation ............................................................. 24
4.2.1 Automated Current Sampling Start/Stop Buttons ...................................... 24
4.2.2 Status Indicators ........................................................................................ 24
4.2.3 System Monitoring Tab ............................................................................. 25
4.2.4 ALERT# pin assertion and fault handling .................................................. 26
4.2.5 Advanced Configuration Tab ..................................................................... 27
4.2.6 Manual Register Configuration Tab ........................................................... 29
4.2.7 Status Bar .................................................................................................. 30
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 31
A.2 Board – Schematic 1 .................................................................................... 32
A.3 Board – Schematic 2 .................................................................................... 33
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UCS2112 Dual USB Port Power Evaluation Board User’s Guide
A.4 Board – Top Silk .......................................................................................... 34
A.5 Board – Top Copper and Silk ....................................................................... 34
A.6 Board – Top Copper .................................................................................... 35
A.7 Board – Inner 1 - GND ................................................................................. 35
A.8 Board – Inner 2 - Signal ............................................................................... 36
A.9 Board – Bottom Copper ............................................................................... 36
A.10 Board – Bottom Copper and Silk ............................................................... 37
A.11 Board – Bottom Silk ................................................................................... 37
Appendix B. Bill of Materials .......................................................................................41
Worldwide Sales and Service .....................................................................................42
DS50002420A-page 6
2015 Microchip Technology Inc.
UCS2112 DUAL USB PORT POWER
EVALUATION BOARD USER’S GUIDE
Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXXXXA”, where “XXXXXXXX” is the document number and “A” is the revision level
of the document.
For the most up-to-date information on development tools, see the MPLAB® IDE online help.
Select the Help menu, and then Topics to open a list of available online help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
UCS2112 Dual USB Port Power Evaluation Board. Items discussed in this chapter
include:
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Web Site
Customer Support
Document Revision History
DOCUMENT LAYOUT
This document describes how to use the UCS2112 Dual USB Port Power Evaluation
Board. The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the UCS2112
Dual USB Port Power Evaluation Board.
• Chapter 2. “Installation and Operation” – Includes instructions on how to install
the board.
• Chapter 3. “Hardware Description” – Describes the UCS2112 Dual USB Port
Power Evaluation Board features and functionalities.
• Chapter 4. “Software Description” – Describes the PC Graphical User Interface
that operates the UCS2112 Dual USB Port Power Evaluation Board.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the UCS2112 Dual USB Port Power Evaluation Board.
• Appendix B. “Bill of Materials” – Lists the parts used to build the UCS2112 Dual
USB Port Power Evaluation Board.
2015 Microchip Technology Inc.
DS50002420A-page 7
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB® IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
Represents code supplied by
user
DS50002420A-page 8
Examples
File>Save
Press <Enter>, <F1>
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
var_name [,
var_name...]
void main (void)
{ ...
}
2015 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user's guide describes how to use UCS2112 Dual USB Port Power Evaluation
Board. Other useful documents are listed below. The following Microchip documents
are available and recommended as supplemental reference resources.
• UCS2112 Data Sheet - “USB Dual-Port Power Switch and Current Monitor”
(DS20005424)
• USB84604 Data Sheet - “USB 2.0 HSIC Hi-Speed 4-Port Controller Hub”
(DS60001295)
• MCP19118/19 Data Sheet - “Digitally-Enhanced Power Analog Controller
with Integrated Synchronous Driver” (DS20005350)
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:
• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.
Technical support is available through the web site at:
http://www.microchip.com/support.
DOCUMENT REVISION HISTORY
Revision A (October 2015)
• Initial Release of this Document.
2015 Microchip Technology Inc.
DS50002420A-page 9
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
NOTES:
DS50002420A-page 10
2015 Microchip Technology Inc.
UCS2112 DUAL USB PORT POWER
EVALUATION BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
This document provides a description of the software and hardware used to evaluate
the features of the UCS2112.
The UCS2112 Dual USB Port Power Evaluation Board demonstrates the features of
two USB ports, capable of data transferring and charging up to 6A. Charging limits,
accumulated current, alerts and attachment status can all be configured, exercised
and/or observed on a graphical user interface.
1.2
UCS2112 EVALUATION SYSTEM
The evaluation system has several components, as shown in Figure 1-1.
•
•
•
•
•
•
Customer-provided Windows® PC
UCS2112 Demo Software (Graphical User Interface - GUI)
UCS2112 Dual USB Port Power Evaluation Board
USB Cable for GUI communications (Standard-A plug to mini-B plug)
12V DC power source
Customer-provided portable device and OEM USB charging cable (with
Standard-A plug at board’s end)
12V DC
power supply
Portable Device
Portable Device
PC running the UCS2112
Demo Software
FIGURE 1-1:
UCS2112 Evaluation System.
2015 Microchip Technology Inc.
DS50002420A-page 11
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
A block diagram of the UCS2112 Dual USB Port Power Evaluation Board is shown in
Figure 1-2 below:
12V
Power Input
DC-DC Converter
MCP19118
5V
USB STD-A
RECPT
(To Portable
Device)
VBus1
USB MINI-B
RECPT
USB Upstream
Port
USB84604
Hub
SMBus
UCS2112
VBus2
USB STD-A
RECPT
(To Portable
Device)
USB Downstream Port 1
USB Downstream Port 2
FIGURE 1-2:
1.3
UCS2112 Dual USB Port Power Evaluation Board Block Diagram.
WHAT THE UCS2112 DUAL USB PORT POWER EVALUATION BOARD KIT
CONTAINS
This UCS2112 Dual USB Port Power Evaluation Board kit includes:
•
•
•
•
DS50002420A-page 12
UCS2112 Dual USB Port Power Evaluation Board (ADM00639)
12V AC-DC Wall Adapter
Standard-A plug to mini-B plug USB Cable
Important Information Sheet
2015 Microchip Technology Inc.
UCS2112 DUAL USB PORT POWER
EVALUATION BOARD USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
This chapter identifies the main connectors, LEDs and test points that can be found on
the UCS2112 Dual USB Port Power Evaluation Board. It also explains the steps to
install the board’s graphical user interface.
2.2
CONNECTORS ON THE EVALUATION BOARD
Figure 2-1 shows the top of the evaluation board and highlights the connectors.
J1
Jack connector to the
12V AC-DC adapter
J3
Header connected to I2C lines
of the MCP19118
J2
ICD Programming header
for MCP19118
J6 (Port 2)
USB Standard A
receptacle
to portable device
J5 (Port1)
USB Standard A
receptacle
to portable device
J4
USB Mini-B Receptacle to PC
FIGURE 2-1:
UCS2112 Dual USB Port Power Evaluation Board Top View - Connectors.
2015 Microchip Technology Inc.
DS50002420A-page 13
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
2.3
LEDS ON THE EVALUATION BOARD
Figure 2-2 shows the top of the evaluation board and highlights the LEDs.
LD1
12V voltage indicator
LD2
5V voltage
indicator
LD8
A_DET#2
pin state indicator
LD7
ALERT#2
pin state indicator
LD6
ALERT#1
pin state indicator
LD3
Hub VBAT voltage indicator
FIGURE 2-2:
DS50002420A-page 14
LD5
A_DET#1
pin state indicator
Evaluation Board Top View - LEDs.
2015 Microchip Technology Inc.
Installation and Operation
2.4
TEST POINTS ON THE EVALUATION BOARD
Figure 2-3 shows the top of the board and highlights the test points.
TP6 (GND)
TP1 (12V)
TP8 (GND)
TP7 (5V)
For monitoring
For monitoring
For monitoring 5V output For monitoring 5V output
12V supply voltage 12V supply voltage from the DC-DC converter from the DC-DC converter
TP2
For monitoring
USB84604 VDD 3.3V
supply voltage
FIGURE 2-3:
TP3
For monitoring
USB84604 VBAT
supply voltage
TP5 (SCL)
For monitoring
I2C communication
between the
USB84604 and the UCS2112
TP4 (SDA)
For monitoring
I2C communication
between the
USB84604 and the UCS2112
Evaluation Board Top View - Test Points.
2015 Microchip Technology Inc.
DS50002420A-page 15
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
2.5
SOFTWARE INSTALLATION
To begin using the UCS2112 Dual USB Port Power Evaluation Board, a software must
be installed on a Windows®-based computer with a USB port.
1. Download the UCS2112 Demo Software archive from the UCS2112 Dual USB
Port Power Evaluation Board’s web page, unzip, then double-click the
executable file to start the installation. Figure Figure 2-4 shows the initial
installation screen.
FIGURE 2-4:
Setup Wizard.
2. Read and accept the license agreement, then click Next.
FIGURE 2-5:
DS50002420A-page 16
Software License Agreement.
2015 Microchip Technology Inc.
Installation and Operation
3. Click the browse icon
to specify the directory where the UCS2112
Demo Software will be installed, then click Next.
FIGURE 2-6:
Installation Directory.
4. Click Next in the Ready to Install window to begin the software installation. The
progress can be observed in the progress bar (see Figure 2-8).
FIGURE 2-7:
2015 Microchip Technology Inc.
Ready to Install.
DS50002420A-page 17
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
5. During installation, a security pop-up window, requesting approval, will appear on
screen. Click Install to proceed with the installation
FIGURE 2-8:
DS50002420A-page 18
Installing the GUI.
2015 Microchip Technology Inc.
Installation and Operation
FIGURE 2-9:
The Installation Complete Window.
Once the installation completes, the View Release Notes File box remains checked to
display information about the current software version. To skip release notes, deselect
this check box. Click Finish to end the installation.
To launch the GUI, either click on the desktop icon or browse to
Windows Start>All Programs>Microchip>UCS2112 Demo Software.
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UCS2112 Dual USB Port Power Evaluation Board User’s Guide
NOTES:
DS50002420A-page 20
2015 Microchip Technology Inc.
UCS2112 DUAL USB PORT POWER
EVALUATION BOARD USER’S GUIDE
Chapter 3. Hardware Description
3.1
UCS2112 DEVICE OVERVIEW
The UCS2112 is a dual USB port power switch configuration which can provide 3.0A
continuous current (3.4A maximum) per VBUS port with precision overcurrent limiting,
port power switch enables, auto-recovery fault handling, undervoltage and overvoltage
lockout, back-drive protection and dynamic thermal management.
For SMBus applications, the UCS2112 provides per-port current monitoring and eight
programmable current limits per switch, ranging from 0.53A to 3.0A continuous current
(3.4A maximum). Per-port charge rationing is also provided ranging from 3.8 mAh to
246.3 Ah.
Both power switches include an independent VBUS discharge function and constant
current mode limiting for BC1.2 applications.
3.2
USB84604 DEVICE
The USB84604 is a low-power, OEM-configurable, Multi-Transaction Translator (MTT)
USB2.0 controller hub with four downstream ports and advanced features for
embedded USB applications. The UCS2112 Dual USB Port Power Evaluation Board
uses only two downstream ports.
The USB84604 supports downstream battery charging. When an upstream host is
connected, the USB84604 allows battery charging with data communication according
to the Battery Charging BC1.2 Standard Downstream Port (SDP) or Charging
Downstream Port (CDP) specifications, depending on the portable device capability.
When an upstream device is not connected, the USB84604 configures the downstream
ports as Dedicated Charger Ports, allowing battery charging only.
The USB84604 provides an additional USB endpoint dedicated for use as a
USB-to-I2C/SPI interface, allowing external circuits or devices to be monitored,
controlled, or configured via the USB interface. The USB84604 controls the UCS2112
via the I2C interface.
3.3
DC-DC CONVERTER WITH MCP19118
The UCS2112 Dual USB Port Power Evaluation Board has a high efficiency, 12V to 5V
DC-DC converter, built around the MCP19118.
The MCP19118 is a highly-integrated, mixed signal, analog pulse-width modulation
(PWM) current mode controller with an integrated microcontroller core for synchronous
DC/DC step-down applications.
The MCP19118 on this board is already programmed and the DC-DC converter is fully
functional. The user can program custom firmware using the J2 ICD header. The user
can also communicate via the I2C interface with the MCP19118 by populating the J3
header.
The DC-DC converter section can be tested separately from the rest of the board by
removing the R6 resistor and connecting a load between the test points TP7 (marked
as “5V”) and TP8 (marked as “GND”).
2015 Microchip Technology Inc.
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UCS2112 Dual USB Port Power Evaluation Board User’s Guide
NOTES:
DS5002420A-page 22
2015 Microchip Technology Inc.
UCS2112 DUAL USB PORT POWER
EVALUATION BOARD USER’S GUIDE
Chapter 4. Software Description
4.1
OVERVIEW
To get the graphical interface and the evaluation board running, follow these
instructions:
1. Provide 12V to the power jack J1. Connect the USB mini-B end of cable to the
board and the USB A-type end to any available USB port on the PC.
2. Start the UCS2112 Demo software: from the Windows Start menu
All Programs>Microchip>UCS2112 Demo Software or from the desktop icon.
The UCS2112 Dual USB Port Power Evaluation Board interface (Figure 4-1) consists
of three tabs (System Monitoring, Advanced Configuration and Manual Register
Configuration) as well as the right side section (UCS2112 Status), the top buttons
(Start Current Sampling and Stop Sampling) and the Status bar which are always
visible.
Tabs
Status Indicators
Status Bar
FIGURE 4-1:
UCS2112 Demo Software Initial Window.
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UCS2112 Dual USB Port Power Evaluation Board User’s Guide
4.2
INTERFACE DESCRIPTION AND OPERATION
4.2.1
Automated Current Sampling Start/Stop Buttons
On the top of the window there are two buttons that start and stop the automated
current sampling (see Figure 4-2). When the Automated Current Sampling is on, the
GUI reads the Current Measurement and the Total Accumulated Charge registers
periodically for both ports (see Figure 4-4). It also reads the status registers regularly
and updates the Status Indicators on the right side panel.
Automated Current
Sampling button
FIGURE 4-2:
4.2.2
Automated Current Sampling Start/Stop Buttons.
Status Indicators
The status indicators show the state of the bits from the Interrupt Status and General
Status registers. They are grey if the corresponding bits are “0” and green/red if the
corresponding bits are set. The green color indicates a change in the status of the
charging port and the red color indicates a fault condition (see Figure 4-3 for color
assignment on each condition).
Some of the bits are cleared when read and their indication is maintained longer, to be
observable by the user.
The status indicators can be updated in two ways: automatically, when the Automated
Current Sampling is active, or manually, by pressing the Check Status button, when
the Automated Current Sampling is disabled.
These indicators turn to green
when changes occur
in the charging port’s status
(bits are “1”)
When grey = bits are “0”
These indicators turn red
when a fault condition
occurs (bits are “1”)
When grey = bits are “0”
Check status when
current sampling is
disabled
FIGURE 4-3:
DS50002420A-page 24
Status Indicators.
2015 Microchip Technology Inc.
Software Description
4.2.3
System Monitoring Tab
The System Monitoring tab is the first tab displayed when opening the GUI. This tab
allows monitoring the instantaneous current measurement and the accumulated
charge and also to set the charge rationing threshold (by entering a number in the
corresponding box) and the current limit for each port (by selecting one of the values
from the drop-down list).
When the Automated Current Sampling is on and the portable devices are attached to
Port 1 and/or Port 2, the GUI shows the current measurements over time as shown in
Figure 4-4 (blue plot).
Current
Measurement
Plot
Instantaneous
Current
Measurement
FIGURE 4-4:
Accumulated
Charge
Plot
Instantaneous
Accumulated
Charge
Current Limit
Setting
Charge
Rationing
Threshold
Monitoring Current Measurement and Charge Accumulation Over Time.
To enable the Accumulated Charge indication, follow these steps:
1. In the Advance Configuration tab, select Enable on the Charge Rationing
group box.
FIGURE 4-5:
2015 Microchip Technology Inc.
Advance Configuration Tab - Charge Rationing Group Box.
DS50002420A-page 25
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
2. In the System Monitoring tab, set the Charge Rationing threshold.
The Charge Rationing threshold value (default set to maximum) can be modified
by entering a new number in the corresponding box. After pressing the <Enter>
key, the software adjusts the number to the closest value that can be written to
the UCS2112 Charge Rationing registers.
In the same tab, the user can set the Current Limit for each Port, by selecting one
of the values from the drop-down list (see Figure 4-4).
4.2.4
ALERT# pin assertion and fault handling
When an ALERT# pin of the UCS2112 device is asserted because is exceeding the
Current Limit, reaching the Charge Rationing Limit or any other fault condition
mentioned in the UCS2112 data sheet, the on-board hub USB84604 detects this
condition as an overcurrent fault in all cases. This fault is signaled by the Windows
operating system. The hub disables the corresponding port power switch automatically
by setting the corresponding PWR_EN pin low. To enable the power switch back and
set the PWR_EN pin high, click on the Windows notification balloon and reset the
corresponding port.
To disable the hub from automatically controlling the power switch, check the Ignore
PWR_EN pins option from the Advance Configuration tab (see Figure 4-6). The
PWR_EN controls will be determined only by the state of the PWR_EN1 bit and
PWR_EN2 bit, which can be set or cleared in the same section.
FIGURE 4-6:
DS50002420A-page 26
Advanced Configuration Tab - PWR_EN Control Overrides.
2015 Microchip Technology Inc.
Software Description
4.2.5
Advanced Configuration Tab
The Advanced Configuration tab (Figure 4-7) allows the user to modify the default
values of the Configuration registers.
FIGURE 4-7:
Advanced Configuration Tab.
4.2.5.1
ATTACH/REMOVAL DETECTION GROUP BOX
The Enable check box activates the Attach/Removal Detection functionality. The user
can select the Attach/Removal Detection threshold for each port.
4.2.5.2
CHARGE RATIONING GROUP BOX
The Accumulated Charge indication and the Charge Rationing functionality for each
port are activated by checking Enable.
When the Charge Rationing threshold is reached, UCS2112 responds as specified in
the Response behavior group box: Report, Report and Disconnect, Disconnect and
Sleep, Ignore.
The Reset button sets the RTN_RST1/2 bit to “1” and then to “0” (two consecutive
write commands). For a detailed description, see Ration Configuration register in the
data sheet.
4.2.5.3
OVERRIDES GROUP BOX
The status of the PWR_EN1/2 pins can be overridden by setting the corresponding
PWR_EN1S and PWR_EN2S bits (see General Configuration registers, Addresses
11h and 12h, in the data sheet).
If Ignore PWR_EN pins is checked, then the status of PWR_EN1/2 pins is ignored and
only the status of PWR_EN1S and PWR_EN2S bits is considered.
2015 Microchip Technology Inc.
DS50002420A-page 27
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
4.2.5.4
AUTO RECOVERY GROUP BOX
The Auto Recovery mechanism is active if Latch error state is unchecked. Otherwise,
the error is latched.
The auto recovery parameters (Retry duration timer and Short circuit voltage threshold)
can be changed by selecting one of the available radio buttons (see Figure 4-8).
Auto recovery
parameters.
FIGURE 4-8:
4.2.5.5
Advanced Configuration Tab - Auto Recovery Parameters.
VBUS DISCHARGE GROUP BOX
The Vbus Discharge Time can be changed by checking one of the available options.
By pressing the Vbus1 Trigger discharge and Vbus2 Trigger discharge buttons the
Vbus is discharged, forcing the portable device to reconnect.
4.2.5.6
CURRENT LIMIT BEHAVIOR GROUP BOX
The Current Limit Behavior parameters can be changed by selecting one of the
available options from the drop-down lists (for more information, see Current Limit
Behavior registers from the data sheet).
4.2.5.7
ALERT OPTIONS GROUP BOX
There are four ALERT options:
• When ALERT1/2 Mask is checked, the ALERT1/2 pins will only be asserted if
overcurrent limit and thermal shutdown conditions are detected.
• When ALERT1/2 Mask is unchecked, the ALERT1/2 pins will be asserted if any
error condition or indicator event is detected.
• When ALERT1/2 Link is checked, the ALERT1/2 pins will be asserted if low
current indication is detected or the internal temperature has exceeded TREG.
• When ALERT1/2 Link is unchecked, the ALERT1/2 pins will not be asserted if low
current indication is detected or the internal temperature has exceeded TREG.
4.2.5.8
DISABLE SMBUS TIMEOUT
When Disable SMBus timeout is checked, this feature is disabled. This is the default
setting. To enable the SMBus timeout feature, uncheck the respective check box.
4.2.5.9
UPDATE BUTTON
This button updates the Configuration registers with the settings modified in the
Advance Configuration tab.
DS50002420A-page 28
2015 Microchip Technology Inc.
Software Description
4.2.6
Manual Register Configuration Tab
This tab allows the user to read and modify the registers of the UCS2112 device.
When opened for the first time, the Manual Register Configuration tab is empty. To
display the registers, press Read all registers button and a table will appear (see
Figure 4-9).
To monitor the value of certain registers, select the corresponding rows in the table and
press Read selected register(s) button.
To write a register value to the UCS2112 device, type the value in the Value column for
the respective register, then press <Enter>.
FIGURE 4-9:
Manual Register Configuration Tab.
2015 Microchip Technology Inc.
DS50002420A-page 29
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
4.2.7
Status Bar
The status bar provides information on the status of the device connected to the PC
and also on the status of the device configuration.
Connection Status
FIGURE 4-10:
DS50002420A-page 30
Device Configuration
Status
Status Bar.
2015 Microchip Technology Inc.
UCS2112 DUAL USB PORT POWER
EVALUATION BOARD USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematics and layouts for the UCS2112 Dual
USB Port Power Evaluation Board:
•
•
•
•
•
•
•
•
•
•
Board – Schematic 1
Board – Schematic 2
Board – Top Silk
Board – Top Copper and Silk
Board – Top Copper
Board – Inner 1 - GND
Board – Inner 2 - Signal
Board – Bottom Copper
Board – Bottom Copper and Silk
Board – Bottom Silk
2015 Microchip Technology Inc.
DS50002420A-page 31
2015 Microchip Technology Inc.
A.2
BOARD – SCHEMATIC 1
TP1
12V
1
3
2
TP PAD PCB 1.6x1
U1
18
VDD
14
VDR
MCP_VDD
C5
C6
4.7uF
10V
0805
10
GND
12
PGND
25
EP
1uF
10V
0603
1
2
3
4
8
GND
J2
MCLR
VDD
GND
PGD
PGC
AUX
1
2
3
4
5
6
GPA0
GPA1
GPA2
GPA3
GPA4
7
GPA5/MCLR
6
GPA6
5
GPA7
MCP_SCL
ICSP
HDR-2.54 Male 1x6
VIN
C1
C2
C3
C4
0.1uF
50V
0805
10uF
50V
1210
10uF
50V
1210
10uF
50V
1210
R1
TP6
1k
0603
1%
GND
TP PAD PCB 1.6x1
11
16
HDRV
17
BOOT
15
PHASE
13
LDRV
22
-VSEN
21
+VSEN
20
+ISEN
19
-ISEN
GND
C7
10V
Q1
4
220nF
0603
GND
Q2
C39
SIR662DP-T1-GE3
1,2,3
0603
16V
0.1uF
C38
9
GPB0
23
GPB1
24
GPB2
MCP_SDA
GND
4.7uH
1k
0603
1%
5,6,7,8
Power ON
L1
R3
4
GREEN
GND
SIR876ADP-T1-GE3
1,2,3
GND
0603
25V
100pF
TP7
R5
R4
1k
0603
1%
1k
0603
1%
5V
TP LOOP Red
MCP5V
R6
MCP19118
GND
GND
LD1
GND
5,6,7,8
J1
12V IN
POWER 2.1mm
R8
R9
R10
1k
0603
1%
1k
0603
1%
1k
0603
1%
C8
C9
C10
C40
C41
22uF
10V
1210
22uF
10V
1210
22uF
10V
1210
22uF
10V
1210
22uF
10V
1210
0R
1210
5%
R7
TP8
470R
0603
5%
TP LOOP Black TH
GND
LD2
GREEN
MCP_VDD
5V ON
GND
GND
J3
3
2
1
R11
R12
4.7k
0603
1%
4.7k
0603
1%
MCP_SDA
MCP_SCL
VBAT
HDR-2.54 Male 1x3
R13
DNP
470R
0603
5%
GND
U2B
47
VDDCR12
DS50002420A-page 32
GND
C16
C17
0.1uF
16V
0603
0.1uF
16V
0603
0.1uF
16V
0603
GND
GND
17
C18
0
2.2uF
6.3V
0603
GND
VDDCR12
EP
USB84604
GND
Power
VDDCOREREG
2
VDDCR12
7
VDDCR12
38
VDD12
GND
C15
2
GND
0.1uF
16V
0603
VBAT
1
VDD33
VDD33
VDD33
VDDA33
VDDA33
VDDA33
1
3
VBAT HUB
C11
4.7uF
6.3V
0603
TP PAD PCB 1.2x0.7
GREEN
TP PAD PCB 1.2x0.7
C14
VBUS
D1
TP3
LD3
C12
C13
0.1uF
16V
0603
4.7uF
6.3V
0603
GND
BAT754C
GND
18
32
12
37
48
C19
C20
C21
C22
C23
0.1uF
16V
0603
0.1uF
16V
0603
0.1uF
16V
0603
0.1uF
16V
0603
0.1uF
16V
0603
GND
GND
GND
GND
GND
GND
Schematic and Layouts
TP2
VDD33
BOARD – SCHEMATIC 2
VBUS
1
2
3
4
5
USB0_N
USB0_P
U2A
Upstream
R17
41
FLEX_USBUP_DP/PRT_DIS_P0
40
FLEX_USBUP_DM/PRT_DIS_M0
C24
5V
SOD-523
DNP
2.2uF
6.3V
0603
C25
SHIELD
D2
0.1uF
0603
16V
R19
SHIELD
USB MINI-B Female
5V
SOD-523
DNP
330R
5%
0603
J5
42
FLEX_HSIC_UP_DATA
39
FLEX_HSIC_UP_STROBE
R20
200k
0603
5%
GND
HSIC / USB 2.0 Downstream
3
SWAP_USBDN1_DM/PRT_DIS_M1
4
SWAP_USBDN1_DP/PRT_DIS_P1
5
USBDN2_DM/PRT_DIS_M2
6
USBDN2_DP/PRT_DIS_P2
GND
SHIELD
USB1_N
USB1_P
D3
USB2_N
USB2_P
VDD33
15
PRTPWR1/PIO41
19
PRTPWR2/PIO42
21
PRTPWR3/PIO43
29
PRTPWR4/PIO44
SPI/OCS
27
SPI_CLK/PIO4
OCS1_N/PIO17
26
SPI_DO/SPI_SPD_SEL/PIO5
OCS2_N/PIO18
24
SPI_DI/PIO9
UART_RX/OCS3_N/PIO19
25
SPI_CE_N
UART_TX/OCS4_N/PIO20
16
20
28
30
TP4 TP PAD PCB 1.2x0.7
TP5
R35
200k
0603
5%
HUB RESET
GND
0.1uF
16V
0603
45
0.1uF
16V
0603
0.1uF
16V
0603
GND
SUSPEND/PIO0
SOF/PIO1
PIO3
PIO8
PIO10
RBIAS
14
13
22
23
34
46
R37
R27
R28
10k
0603
5%
10k
0603
5%
R30
R31
470R
0603
5%
220R
0603
5%
R34
10k
0603
5%
LD5
LD6
GREEN
A_DET1
RED
ALERT1
ALERT1
12k
0603
1%
GND
COMM_ILIM
ALERT2
A_DET1
A_DET2
PWR_EN1
PWR_EN2
4
VBUS1a
5
VBUS1b
0603
USB2.0-A
SMDATA
18
U3
UCS2112
GND
GND
SCL
SDA
C32
C33
C34
0.1uF
16V
0603
1uF
10V
0603
10uF
10V
0805
GND
13
R36
0603
16
ALERT2
14
15
11
VBUS2a
12
VBUS2b
SMCLK
15pF
50V
0603
R21
GND
SHIELD
ALERT1
1M
5%
C37
GND
1
BOOST
17
2015 Microchip Technology Inc.
15pF
50V
0603
3
20
2
VBUS1
C36
16V
330R
5%
GND
R38
0603
C27
MCP5V
GND
X1
SHIELD
150uF
10V
TANT-D
GND
PWR_EN1
24.000MHz
R25
0603
SHIELD
5V
SOD-882
DNP
0.1uF
0603
16V
VDD33
XTAL2
USB84604
C31
Port 2
C26
D5
SCL
SDA
Common
NC
PWR_EN2
C30
21
EP
19
GND
GND
43
C35
5V
SOD-882
DNP
C29
150uF
10V
TANT-D
5V
SOD-882
DNP
9
VS2a
10
VS2b
3
TACT SPST
100R
5%
D6
8
2
R26
C28
D7
PWR_EN1
TP PAD PCB 1.2x0.7
RESET_N
XTAL1/REFCLK
100R
5%
0603
VDD
4
44
R24
J6
1
VBUS
2
D3
D+
4
GND
6
VS1a
7
VS1b
1SW1
100k
0603
5%
10k
0603
5%
ALERT1
ALERT2
33
SCL/SMBCLK/PIO2
31
SDA/SMBDATA/PIO45
R29
R23
10k
0603
5%
0603
EEPROM/SMBus
VBAT
R22
5V
SOD-882
DNP
SHIELD
VBUS2
10
USBDN4_DM/PRT_DIS_M4
11
USBDN4_DP/PRT_DIS_P4
Port Power
D4
5V
SOD-523
DNP
8
USBDN3_DM/PRT_DIS_M3
9
USBDN3_DP/PRT_DIS_P3
1
VBUS
2
D3
D+
4
GND
VBUS1
USB 2.0 Downstream
35
SHIELD
VBUS_DET/PIO16
0
36
D10
5V
SOD-882
DNP
0
100k
0603
5%
D9
5V
SOD-882
DNP
J4
0
D8
VBUS
VBUS
DD+
ID
GND
PWR_EN2
VBUS2
33k
1%
VDD33
R32
R33
220R
0603
5%
470R
0603
5%
LD7
LD8
RED
ALERT2
GREEN
ADET_2
0.1uF
0603
330R
5%
SHIELD
Port 1
USB2.0-A
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
DS50002420A-page 33
A.3
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
A.4
BOARD – TOP SILK
A.5
BOARD – TOP COPPER AND SILK
DS50002420A-page 34
2015 Microchip Technology Inc.
Schematic and Layouts
A.6
BOARD – TOP COPPER
A.7
BOARD – INNER 1 - GND
2015 Microchip Technology Inc.
DS50002420A-page 35
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
A.8
BOARD – INNER 2 - SIGNAL
A.9
BOARD – BOTTOM COPPER
DS50002420A-page 36
2015 Microchip Technology Inc.
Schematic and Layouts
A.10 BOARD – BOTTOM COPPER AND SILK
A.11 BOARD – BOTTOM SILK
2015 Microchip Technology Inc.
DS50002420A-page 37
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
NOTES:
DS50002420A-page 38
2015 Microchip Technology Inc.
UCS2112 DUAL USB PORT POWER
EVALUATION BOARD USER’S GUIDE
Appendix B. Bill of Materials
TABLE B-1:
Qty.
BILL OF MATERIALS (BOM)
Designator
Description
Manufacturer 1
Part Number
1
C1
Cap. ceramic 0.1 µF 50V 10% X7R
SMD 0805
Cal-Chip Electronics
Inc.
GMC21X7R104K50NTLF
3
C2, C3, C4
Cap. ceramic 10 µF 50V 20% X7R
SMD 1210
TDK Corporation
C3225X7R1H106M250AC
1
C5
Cap. ceramic 4.7 µF 10V 20% X7R
SMD 0805
TDK Corporation
C2012X7R1A475M125AC
2
C6, C33
Cap. ceramic 1 µF 10V 20% X7R SMD TDK Corporation
0603
C1608X7R1A105M
1
C7
Cap. ceramic 0.22 µF 10V 10% X7R
SMD 0603
TDK Corporation
C1608X7R1A224K
5
C8, C9, C10,
C40, C41
Cap. ceramic 22 µF 10V 10% X7R
SMD 1210
TDK Corporation
C3225X7R1A226K230AC
18
C11, C12, C15, Cap. ceramic 0.1 µF 16V 10% X7R
C16, C17, C19, SMD 0603
C20, C21, C22,
C23, C25, C27,
C29, C30, C31,
C32, C35, C39
AVX Corporation
0603YC104KAT2A
2
C13, C14
Cap. ceramic 4.7 µF 6.3V 20% X5R
SMD 0603
Panasonic® - ECG
ECJ-1VB0J475M
1
C18
Cap. ceramic 2.2 µF 6.3V 20% X5R
SMD 0603
TDK Corporation
C1608X5R0J225M080AB
1
C24
Cap. ceramic 2.2 µF 6.3V 10% X7R
SMD 0603
TDK Corporation
C1608X7R0J225K
2
C26, C28
Cap. tantalum 150 µF 10V 10%
100mOhm SMD D
AVX Corporation
TPSD157K010R0100
1
C34
Cap. ceramic 10 µF 10V 10% X7R
SMD 0805
TDK Corporation
C2012X7R1A106K125AC
2
C36, C37
Cap. ceramic 15 pF 50V 5% NP0 SMD TDK Corporation
0603
C1608C0G1H150J
1
C38
Cap. ceramic 100 pF 25V 10% NP0
SMD 0603
AVX Corporation
06033A101KAT2A
1
CBL1
Mech. HW cable USB-A Male to Mini
USB-B Male 3 ft black
Katerno
10UM-02103BK
1
D1
Diode Schottky arr. BAT754C 600 mV
200 mA 30V SOT-23-3
NXP Semiconductor
BAT754C,215
3
D2, D3, D10
Diode Zener T5V0S5-7 5V 150 mW
Diodes® Incorporated T5V0S5-7
SMD SOD-523 - DO NOT POPULATE
6
D4, D5, D6, D7, Diode Zener PESD5V0X1BL 5V SMD
D8, D9
SOD-882 - DO NOT POPULATE
Note 1:
NXP Semiconductor
PESD5V0X1BL,315
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
2015 Microchip Technology Inc.
DS50002420A-page 39
UCS2112 Dual USB Port Power Evaluation Board User’s Guide
TABLE B-1:
Qty.
BILL OF MATERIALS (BOM)
Designator
Description
Manufacturer 1
Part Number
1
J1
Conn. power 2.1 mm 5.5 mm switch
TH R/A
CUI Inc.
PJ-002A
1
J2
Conn. header-2.54 Male 1x6 gold
5.84 MH TH vert.
FCI
68001-106HLF
1
J3
Conn. header-2.54 Male 1x3 gold
5.84 MH TH vert. - DO NOT
POPULATE
FCI
68000-103HLF
1
J4
Conn. USB MINI-B Female SMD R/A
Hirose Electric Co.,
Ltd.
UX60SC-MB-5ST(80)
2
J5, J6
Conn. USB 2.0 STD-A Female TH R/A TE Connectivity, Ltd.
292303-1
1
L1
Inductor 4.7 uH 13.6A 20% SMD
L7.5W7.2H7
Coilcraft
XAL7070-472MEC
5
LD1, LD2, LD3, Diode LED green 2.2V 25 mA 15 mcd
LD5, LD8
clear SMD 0603
Kingbright Corp.
APT1608SGC
2
LD6, LD7
Diode LED red 1.95V 30 mA 700 mcd
clear SMD 0603
Kingbright Corp.
APTD1608SURCK
4
PAD1, PAD2,
PAD3, PAD4
Mech. HW rubber pad cylindrical D7.9
H5.3 black
3M
SJ61A11
1
PCB1
Printed Circuit Board - UCS2112 Dual
USB Port Power Evaluation Board
—
04-10367-R3
1
PS1
Mech. HW power supply 12V 3A DC
2.1 mm jack
CUI Inc.
EMSA120300-P5P-SZ
1
Q1
Trans. FET N-CH SIR876ADP-T1-GE3 Vishay Siliconix
100V 40A 62.5W PPAK SO-8
SIR876ADP-T1-GE3
1
Q2
Trans. FET N-CH SIR662DP-T1-GE3
60V 60A 104 PPAK SO-8
Vishay Siliconix
SIR662DP-T1-GE3
7
R1, R3, R4, R5, Resistor TKF 1k 1% 1/10W SMD
R8, R9, R10
0603
Panasonic
ERJ-3EKF1001V
1
R6
Resistor TKF 0R 1/3W SMD 1210
Vishay/Dale
CRCW12100000Z0EA
4
R7, R13, R30,
R33
Resistor TKF 470 5% 1/10W SMD
0603
Panasonic
ERJ-3GEYJ471V
2
R11, R12
Resistor TKF 4.7k 1% 1/10W SMD
0603
Panasonic
ERJ-3EKF4701V
2
R17, R29
Resistor TKF 100k 5% 1/10W SMD
0603 (Don't Use, Duplicate, Use
RSMT0026)
Panasonic
ERJ-3GEYJ104V
3
R19, R21, R25
Resistor MF 330R 5% 1/16W SMD
0603
Panasonic
ERA-V33J331V
2
R20, R35
Resistor TKF 200k 5% 1/10W SMD
0603
Panasonic
ERJ-3GEYJ204V
5
R22, R23, R27, Resistor TKF 10k 5% 1/10W SMD
R28, R34
0603
Panasonic
ERJ-3GEYJ103V
2
R24, R26
Resistor TKF 100 5% 1/10W SMD
0603
Vishay/Dale
CRCW0603100RJNEA
2
R31, R32
Resistor TKF 220 5% 1/10W SMD
0603
NIC Components
Corp.
NRC06J221TRF
1
R36
Resistor TKF 33k 1% 1/10W SMD
0603
Panasonic
ERJ-3EKF3302V
Note 1:
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
DS50002420A-page 40
2015 Microchip Technology Inc.
Bill of Materials
TABLE B-1:
Qty.
BILL OF MATERIALS (BOM)
Designator
Description
Manufacturer 1
Part Number
1
R37
Resistor TKF 12k 1% 1/10W SMD
0603
Yageo Corporation
RC0603FR-0712KL
1
R38
Resistor TKF 1M 5% 1/10W SMD
0603
Yageo Corporation
9C06031A1004JLHFT
1
SW1
Switch TACT SPST 12V 50 mA
TL3301AF260QG SMD
E-Switch®, Inc.
TL3301AF260QG
1
TP7
Conn. TP loop red TH - DO NOT
POPULATE
Keystone Electronics 5010
Corp.
1
TP8
Conn. TP loop black TH - DO NOT
POPULATE
Keystone Electronics 5011
Corp.
1
U1
Microchip analog PWM controller
1.6 MHz MCP19118-E/MJ QFN-24
Microchip Technology MCP19118-E/MJ
Inc.
1
U2
Microchip interface USB Hub/Flash
USB84604 QFN-48
Microchip Technology USB84604AFT-B-001080
Inc.
1
U3
Microchip interface USB power switch
UCS2112-1-V/G4 QFN-20
Microchip Technology UCS2112-1-V/G4
Inc.
1
X1
Crystal 24 MHz 18 pF SMD ABM8G
Abracon® Corporation ABM8G-24.000MHZ-18-D2Y-T
Note 1:
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
2015 Microchip Technology Inc.
DS50002420A-page 41
Worldwide Sales and Service
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://www.microchip.com/
support
Web Address:
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07/14/15
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2015 Microchip Technology Inc.