2009 - 2014 Microchip Technology Inc. DS00001818A-page 1
Product Features
• 3.3 Volt Operation (5 V olt Tolerant)
• PC99, PC01, ACPI 1.0 Compliant
• LPC Interface
- Supports LPC Bus frequencies of 19.2MHz to
33MHz
• Serial IRQ Compatible with Serialized IRQ Sup-
port for PCI Systems
• Programmable Wake-up Event (PME) Interface
• 24 General Purpose Input/Output Pins
• System Management Interrupt
•Serial Ports
- Three Full Function Serial Ports
- High Speed NS16C550A Compatible UARTs
with Send/Receive 16-Byte FIFOs
- Supports 230k and 460k Baud
- Programmable Baud Rate Generator
- Modem Control Circuitry
- 480 Address and 15 IRQ Options
• Infrared Communications Controller
- IrDA v1.2 (4Mbps), HPSIR, ASKIR, Con-
sumer IR Support
- 2 IR Ports
- 96 Base I/O Add ress, 15 IRQ, and 4 DMA
Options
• Two LED Drivers with blinking options
• Watch Dog Timer with optional output pin
• 64-Pin QFN RoHS Compliant package
Description
The SIO1028 is a single chip LPC I/O device. The
SIO1028 is a 3.3V ope rational (5.0V tolerant), PC 99/
2001, and ACPI 1.0 compliant Super I/O Controller.
The SIO1028 includes 24 GPIO pins, support for two
LED's with blinking option and a Watchdog Timer
(WDT) with optional output pin. The SIO1028 includes
three 16C550A compatible UARTs. One UART
includes additional support for a Serial Infrared Inter-
face that complies with IrDA v1.2 (Fast IR), HPSIR, and
ASKIR formats, as well as Consumer IR.
SIO1028
Advanced Notebook I/O for LPC Designs with
Three Serial Ports
SIO1028
DS00001818A-page 2 2009 - 2014 Microchip Technology Inc.
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
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Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).
Errata
An errata sheet, describing minor operational differe nces from the data sheet an d recommende d workarounds, may exist for cur-
rent devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the
revision of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
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• Your local Microchip sales office (see last page)
When contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature number) you are
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2009 - 2014 Microchip Technology Inc. DS00001818A-page 3
SIO1028
BLOCK DIAGRAM
FIGURE 1: SIO1028 BLOCK DIAGRAM
LPC BUS
INTERFACE
Serial
IRQ
SER_IRQ
PCI_CLK
LAD0
LAD1
LAD2
LAD3
LFRAME#
LDRQ#
LPCPD#
PCI_RESET#
CLKRUN#
Denotes Multifunction Pins*
16C550
COMPATIBLE
SERIAL
PORT 1
TXD1, n R TS1, nDTR1
nCTS1, RXD1,
nDSR1, nDCD1, nRI1
16C550
COMPATIBLE
SERIAL
PORT 3
TXD3*, nRT S3,* nDTR3*
nCTS3*, RXD3*,
nDSR3*, nDCD3*, nRI3*
16C550
COMPATIBLE
SERIAL
PORT 2 WITH
INFRARED
INTERFACE
IRTX2*, IRMODE*,
TXD2*, nRTS2*, nDTR2*
IRR X2 *, IRRX3* ,
RXD2*, nCTS2*,
nDSR2*, nDCD2*, nRI2*
LED Driver LED1*, LED2*
Watch Dog
Timer WDT*
GP[11:13]*, GP16,
GP[20:23]*,
GP[30:37]*,
GP[50:57]*
IRQIN1*, IRQIN2*,
IRQIN3*
GENERAL
PURPOSE
I/O
CONFIGURATION
REGISTERS
ACPI
BLOCK
nIO_PMEnIO_SMI*
SMI PME
VCC
CLOCK
GEN
CLKI32
CLOCKI
VTR
VSS
CONTROL, ADDRESS, DATA
SIO1028
DS00001818A-page 4 2009 - 2014 Microchip Technology Inc.
PACKAGE OUTLINE
FIGURE 2: SIO1028 64- PIN QFN PACKAGE, 9 X 9MM BODY, 0.5MM PITCH
Note: For the most current package drawings,
see the Microchip Packaging Specification at
http://www.microchip.com/packaging
2009 - 2014 Microchip Technology Inc. DS00001818A-page 5
SIO1028
FIGURE 2: SIO1028 64-PIN QFN PACKAGE, 9 X 9MM BODY, 0.5MM PITCH (CONTINUED)
Note: For the most current package drawings,
see the Microchip Packaging Specification at
http://www.microchip.com/packaging
SIO1028
DS00001818A-page 6 2009 - 2014 Microchip Technology Inc.
APPENDIX A: PRODUCT BRIEF REVISION HISTORY
TABLE A-1: REVISION HISTORY
Revision Section/Figure/Entry Correction
DS00001818A (08-15-14) Replaces previous SMSC version Rev. 0.5 (11-02-09)
2009 - 2014 Microchip Technology Inc. DS00001818A-page 7
SIO1028
THE MICROCHIP WEB SITE
Microchip provides online support via our WWW 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 con-
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•Business of Mic r oc hi p – Product selector and ordering guides, latest Microchip press releases, listing of semi-
nars and events, listings of Microchip sales offices, distributors and factory representatives
CUSTOMER CHANGE NOTIFICATION SERVICE
Microchip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive
e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or
development tool of interest.
To reg ister, access the Mi croc hip web site at www.microchip.com. Under “Support”, cli ck on “Customer Ch ange Notifi-
cation” and follow the registration instructions.
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 i ncluded in the back of this docu-
ment.
Technical support is av ailable through the web site at: http://www.microchip.com/support
SIO1028
DS00001818A-page 8 2009 - 2014 Microchip Technology Inc.
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO.(1) XXX(2)
Package
Device
Device: SIO1028 (1)
Package: JZX = 64-pin QFN (2)
Tape and Reel
Option: Blank = Tray packaging
TR = Tape and Reel (3)
Examples:
a) SIO1028-JZX = 64-pi n QFN
b) SIO1028-JZX-TR = 64-pi n QFN Tape and Reel
[X](3)
Tape and Reel
Option
-
Note 3: Tape and Reel identifier onl y appears in the
catalog part number description. This identi-
fier is used for ordering purposes and is not
printed on the device package. Check with
your Microchip Sales Office for package
availability with the Tape and Reel option.
Note 2: All package options are RoHS compliant.
For RoHS compliance and environmental
information, please visit http://www.micro-
chip.com/pagehandler/en-us/aboutus/
ehs.html .
Note 1: These products mee t th e haloge n maxi mum
concentration values per IEC61249-2-21.
-
2009 - 2014 Microchip Technology Inc. DS00001818A-page 9
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 wit h your specifications. MICROCHI P MA KE S NO
REPRESENTATIONS OR WARRANTIES OF ANY KIND WHET HER EX PRE SS OR IMP LIE D, WR ITTEN OR ORAL , STATUTORY OR
OTHERWISE, RELA TED TO THE INFORMA TION, INCLUDING BUT NOT LIMITED TO ITS CONDITI ON, QUALITY, PERFORMANCE,
MERCHANT ABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Micro-
chip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold
harmless Microchip from any and all damages, claim s, suits, or expenses resulting from su ch use. No licenses are conveyed, implicitly or
otherwise, under any Microchip intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC , FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer, LANCheck,
MediaLB, MOST, MOST logo, MPLAB, OptoL yzer , PIC, PICST ART, PIC32 logo, RightTouch, S pyNIC, 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 T echnology 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, 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 trademarks 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.
© 2009 - 2014, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
ISBN: 9781632765277
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 Dat a
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 featur es of our
products. Attempts to break Microchip’ s code protection feature may be a violation of the Digit al Millennium Copyright Act. If such acts
allow unauthorized access to you r software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received ISO/TS-16949:200 9 certif ication 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, microperi pherals, nonvola tile memo ry and
analog product s. In addition, Microchip ’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
QUALITY MANAGEMENT S
YSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
DS00001818A-page 10 2009 - 2014 Microchip Technology Inc.
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03/25/14
