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LM3S811
User Guide
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LUMINARY MICRO LM3S811 User Guide

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Stellaris® LM3S811
Evaluation Board
USER’S MANUAL
EK-LM3S811-02 Copyright © 2006-2008 Luminary Micro, Inc.
Legal Disclaimers and Trademark Information
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH LUMINARY MICRO PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN LUMINARY MICRO’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, LUMINARY MICRO ASSUMES NO LIABILITY WHATSOEVER, AND LUMINARY MICRO DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF LUMINARY MICRO’S PRODUCTS INCLUDING LI ABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. LUMINARY MICRO’S PRODUCTS ARE NOT INTENDED FOR USE IN MEDICAL, LIFE SAVING, OR LIFE-SUSTAINING APPLICATIONS.
Luminary Micro may make changes to specifications and product descriptions at any time, without notice. Contact your local Luminary Micro sales office or your distributor to obtain the latest specifications before placing your product order.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Luminary Micro reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
Copyright © 2006–2008 Luminary Micro, Inc. All rights reserved. Stellaris, Luminary Micro, and the Luminary Micro logo are registered trademarks of Luminary Micro, Inc. or its subsidiaries in the United States and other countries. ARM and Thumb are registered trademarks, and Cortex is a trademark of ARM Limited. Other names and brands may be claimed as the property of others.
Luminary Micro, Inc. 108 Wild Basin, Suite 350 Austin, TX 78746 Main: +1-512-279-8800 Fax: +1-512-279-8879 http://www.luminarymicro.com
2 January 6, 2009
Stellaris® LM3S811 Evaluation Board
Revision History
This table provides a summary of the document revisions.
Date Revision Description
September 2006 00 Initial release of doc to customers.
December 2006 01 Changed value in Table B-1 for Pad 11.
January 2009 02 Changed value in Table 3-1 for User Push Switch Input.
January 6, 2009 3
4 January 6, 2009
Stellaris® LM3S811 Evaluation Board
Ta ble of Contents
Chapter 1: Stellaris® LM3S811 Evaluation Board .........................................................................................9
Features..............................................................................................................................................................9
Block Diagram .................................................................................................................................................. 10
Evaluation Kit Contents ....................................................................................................................................10
Evaluation Board Specifications ................................................................................................................... 10
System Requirements...................................................................................................................................11
Supported Devices........................................................................................................................................11
Features of the LM3S811 Microcontroller.................. ... .... ... ... ... .... ... ... ... .... ... ... ... ... .... ... ... ... .... ... ......................11
Chapter 2: Getting Started.............................................................................................................................13
Powering the Board ..........................................................................................................................................13
Installing the Drivers .........................................................................................................................................13
Driver Installation..........................................................................................................................................13
Completing Driver Installation....................................................................................................................... 13
Running the Quickstart Application................................................................................................................... 14
Chapter 3: Hardware Description.................................................................................................................. 15
LM3S811 Microcontroller..................................................................................................................................15
Device Overview...........................................................................................................................................15
Clocking........................................................................................................................................................15
Reset.............................................................................................................................................................15
Power Supply................................................................................................................................................ 15
Debugging..................................................................................................................................................... 15
USB Device Controller Functions .....................................................................................................................16
Device Overview...........................................................................................................................................16
USB to JTAG/SWD... ....................................... ... ... ... .... ... ....................................... ... ... ... .... .........................16
Virtual COM Port........................................................................................................................................... 16
Organic LED Display ........................................................................................................................................16
Features........................................................................................................................................................ 16
Control Interface ...........................................................................................................................................16
Power Supply................................................................................................................................................ 17
Design Guidelines.................................. ... .... ... ... ... ....................................... ... ... .... ... ... ... .............................17
Further Reference.........................................................................................................................................17
Other Peripherals............. ... ....................................... ... .... ... ... ... .......................................................................17
Thumbwheel Potentiometer...................................... .... ... ... ... .... ... ... ... .... ... ...................................................17
User LED .................. ... ... .... ... ... ... .... ... ....................................... ... ... ... ..........................................................17
User Pushbutton....... ... ... .... ... ... ... .... ... ... ....................................... ... ... .... ... ... ................................................ 17
Bypassing Peripherals............................ ... ... .... ... ... ... ... .... ...................................... .... ... ... ... .............................17
Interfacing to the EVB....................................................................................................................................... 18
Using the In-Circuit Debugger Interface ........................................................................................................... 18
ICDI Features................................................................................................................................................18
Enabling ICDI Mode......................................................................................................................................19
ARM Target Cable........................................................................................................................................19
Starting ICDI .................................................................................................................................................19
January 6, 2009 5
Chapter 4: Communications..........................................................................................................................21
Using the Virtual COM Port .............................................................................................................................. 21
Confirming Driver Installation........................................................................................................................21
Installing the VCP Device Driver...................................................................................................................22
About HyperTerminal........................................................................................................................................ 24
Starting HyperTerminal.................................................................................................................................24
Appendix A: Schematics................................................................................................................................27
Appendix B: Connection Details...................................................................................................................31
Component Locations.......................................................................................................................................31
Evaluation Board Dimensions........................................................................................................................... 31
I/O Breakout Pads and Recommended Connectors......................................................................................... 32
ARM Target Pinout ...........................................................................................................................................33
Appendix C: Contact Information ................................................................................................................. 35
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Stellaris® LM3S811 Evaluation Board
List of Figures
Figure 1-1. Evaluation Board Layout................................................................................................................. 9
Figure 1-2. LM3S811 Evaluation Board Block Diagram ..................................................................................10
Figure 3-1. ICD Interface Mode .......................................................................................................................18
Figure 4-1. Check VCP Driver Installation....................................................................................................... 21
Figure A-1. LM3S811 Microcontroller (sheet 1 of 2) .................................. ... ... ... ... .... ... ... ................................28
Figure A-2. LM3S811 Microcontroller (sheet 2 of 2) .................................. ... ... ... ... .... ... ... ................................29
Figure B-1. Component Locations ................................................................................................................... 31
Figure B-2. Evaluation Board Dimensions .................................... ... ... ....................................... ... ... ................31
January 6, 2009 7
Stellaris® LM3S811 Evaluation Board
List of Tables
Table 3-1. Isolating On-Board Hardware........................................................................................................ 18
Table B-1. I/O Breakout Pads.........................................................................................................................32
Table B-2. Recommended Connectors................. ... ... .... ... ............................................................................. 32
Table B-3. 20-Pin JTAG/SWD Configuration..................................................................................................33
January 6, 2009 8
Thumbwheel
Potentiometer
USB Interface
User L ED
User P us h S witch
OLED DisplayStellaris
TM
LM3S811
Reset
Switch
JTAG/SWD to
external target
CHAPTER 1

Stellaris® LM3S811 Evaluation Board

The Stellaris® LM3S811 Evaluation Board is both a compact and versatile evaluation platform for the Stellaris LM3S811 ARM® Cortex™-M3-based microc on tr olle r, and an In-Circuit Debug Interface (ICDI) for any Stellaris micr ocontroller-based target board. The EVB allows users to evaluate, prototype, and create application-specific designs.

Features

The Stellaris® LM3S811 Evaluation Board includes the following features:
Stellaris® LM3S811 microcontrollerOLED gr ap h ics disp la y with 96 x 16 pixel res olu tionUser- p ro gr ammable pushbutton and LEDReset pushbutton and power indicator LEDThumbwheel potentiometer for driving an Analog-to-Digital Converter (ADC) inputStandard ARM® 20-pin JTAG debug connector for use as an In-Circuit Debug Interface (ICDI)I/O signal break-out pads for hardware prototyping
Figure 1-1. Evaluation Board Layout
UART0 accessible through a USB Virtual COM Port (VCP)USB interface for all communication and powerEvaluation copy of the Keil™ RealView® Microcontroller Development Kit software tools
Figure 1-1 shows the layout of the Stellaris® LM3S811 Evaluation Board.
January 6, 2009 9

Block Diagram

USB
Stellaris
LM3S811
MCU
+5V
Dual USB
Device
Controller
I/O Signals
OLED Display
96 x 16
Debug
Switch
Pot
LED
I/O Signal Break-out
I/O Signal Break-out
20-pin ARM
JTAG/SWD Output
USB Cable
Reset
+3.3V Voltage
Regulator
SWD/JTAG
Mux
UART0
Reset
T
a
r
g
e
t
C
a
b
l
e
Block Diagram
Figure 1-2. LM3S811 Evaluation Board Block Diagram

Evaluation Kit Contents

The evaluation kit contains everything needed to develop and run applications for Stellaris microcontrollers including:
LM3S811 Evaluation Board (EVB)USB cable20-pin JTAG/SWD target cableCD containing:
– Keil™ RealView® Microcontroller Development Kit RVMDK (16 KB limited) – Complete documentation

Evaluation Board Specifications

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– Quickstart guide – Quickstart source code – DriverLib and example source code
Board supply voltage: 4.37–5.25 Vdc from USB connectorBoard supply current: 80 mA typ (fully active, CPU at 50 MHz)Break-out power output: 3.3 Vdc (100 mA max)
Stellaris® LM3S811 Evaluation Board
Dimensions: 3.65” x 1.40” x 0.30” (LxWxH)RoHS status: Compliant

System Requirements

Microsoft Windows 2000, XP, or 2003128 MB of RAM (512 MB recommended)100 MB of available hard-disk space1024 x 768 minimum screen resolutionCD-ROM driveUSB port

Supported Devices

In-Circuit Debug Interface (ICDI) mode presently supports all Luminary Micro Stellaris Family devices.

Features of the LM3S811 Microcontroller

32-bit ARM® Cortex™-M3 v7M architecture optimized for small-footprint embedded
applications
– Thumb®-compatible Thumb-2-only instruction set processor core for high code density – 50-MHz operation – Hardware-division and single-cycle-multiplication – Integrated Nested Vectored Interrupt Controller (NVIC) providing deterministic interrupt
handling
– 27 interrupt channels with eight priority levels
64 KB single-cycle flash with two forms of flash protection on a 2-KB block basis 8 KB single-cycle SRAM Three timers, each of which can be configured: as a single 32-bit timer, as a dual 16-bit timer
with capture and simple PWM modes, or to initiate an ADC event
Real-Time Clock (RTC) capabilitySeparate watchdog clock with an enableProgrammable interrupt generation logic with interrupt masking Lock register protection from runaway softwareReset generation logic with an enable/disable Synchronous Serial Interface (SSI) Programmable interface operation for Freescale SPI, National Semiconductor
MICROWIRE™, or Texas Instruments synchronous serial
– Master or slave operation
Two fully programmable 16C550-type UARTs
– Separate 16x8 transmit (TX) and 16x12 receive (R X) FIFOs to reduce CPU interrupt
service loading
January 6, 2009 11
Features of the LM3S811 Microcontroller
– Programmable baud-rate generator
Analog-to-Digital Converter (ADC)
– Single- and differential-input configurations – Four 10-bit channels (inputs) when used as single ended inputs – Sample rate of 500 thousand samples/second
I2C Bus with Master and slave receive and transmit operation with transmission speed up to
100 Kbps in Standard mode and 400 Kbps in Fast mode
Six motion-control PWM outputs 1 to 32 GPIOs, depending on user configuration On-chip Linear Drop-Out (LDO) voltage regulator 3.3-V supply brownout detection and reporting via interrupt or reset On-chip temperature sensor 48-pin RoHS-compliant LQFP Industrial operating temperature
12 January 6, 2009
CHAPTER 2

Getting Started

The Stellaris LM3S811 Evaluation Kit EKK-LM3S811 Quickstart provides step-by-step instructions for getting started with your Stellaris LM3S811 Evaluation Kit. Fo r your con ve nie nc e th es e instructions are summarized below.

Powering the Board

The Stellaris LM3S811 Evaluation Board (EVB) is configured for immediate use. To power the EVB, use the USB cable supplied in the kit. Connect the mini-b (smaller) end of the USB cable to the connector labeled “USB” on the EVB. Connect the other end (Type A) to a free USB port on your host PC. The USB interface is capable of sourcing up to 500 mA for each attached device, which is sufficient for the evaluation board. If connecting the board through a USB hub, it must be a powered hub.
When you plug in the EVB for the first time, Windows starts the Found New Hardware Wizard. The Stellaris LM3S811 Evaluation Kit Quickstart Guide steps through the process of installing drivers for the Stellaris LM3S811 Evaluation Board.

Installing the Drivers

The Stellaris LM 3S811 Evaluation Board requires several hardware drive rs. All drivers are located in the \T ools\Ftdi directory on the Software and Documentation CD. Each time Windows requests a driver for this device, point it to the Software and Documentation CD.

Driver Installation

When the Found New Hardware Wizard st arts, Windows asks if it can connect to Windows Update to search for software. Select “No, not this time,” and then click Next.
The Found New Hardware Wizard then asks you from where to install the software. Select “Install from a list or specific location (Advanced)” and click Next.
Make sure the Documentation and Sof tware CD that came with the evaluation kit is in your CD-ROM drive. Select “Search for the best driver in these locations,” and check the “Search removable media (floppy, CD-ROM…)” option. Click Next.
A warning pops up during the Hardware Installation; click Continue Anyway. Windows now finishes installing the drivers for “LM3S811 Evaluation Board A.” When the driver
install is finished, a window appears. Click Finish to close the dialog box.

Completing Driver Installation

You have just installed the drivers for “LM3S811 Evaluation Board A”. The USB device built into the EVB is a composite USB device. After you click Finish, a new Found New Hardware Wizard window appears asking to install drivers for another device. This is for the “LM3S811 Evaluation Board B” part of the composite USB device. Follow the same instructions as above to install the drivers for this device.
The Found New Hardware Wizard appears one last time. This is to install the drivers for the “LM3S811 Virtual COM Port”. Again, follow the same instructions above to install the drivers for this device.
January 6, 2009 13
Getting Started
Now all of the hardware drivers for the LM3S811 Evaluation Board have been installed. These drivers give the debugger access to the JTAG interface and the host PC access to the V irtual COM Port.

Running the Quickstart Application

The quickstart application is a game in which you navigate a ship through an endless tunnel. Use the potentiometer (POT) to move the ship up and down, and the user pushbutton (USER) to fire a missile to destroy obstacles in the tunnel. Score accumulates for survival and destroying obstacles. The game lasts for only one ship; the score displays at the end of the game.
Since the OLED display on the evaluation board ha s burn-in characteristics similar to a CRT, the application also contains a screen saver. The screen saver only becomes active if two minutes have passed without the user pushbutton being pressed while waiting to start the game (i.e., the screen saver never appears during game play). An implementat ion of the Game of Life is run with a field of random data as the seed value.
After two minutes of running the screen saver, the display turns off and the user LED blinks. Exit either mode of screen saver (Game of Life or blank display) by pressing the user pushb utton (USER). Press the button again to start the game.
While the game is being played, a running tally of the score is output through UART0 of the LM3S811. UART0 is connected to the FTDI’s second serial channel. This serial channel is available to Windows as a Virtual COM Port. To view the score, open up a terminal application such as HyperTerminal. Connect using COM#, where # is the number Windows has assigned the Virtual COM Port. Set the serial connection to a baud rate of 115200, 8 data bits, no parity, 1 stop bit, and no flow control.
Important: The quickstart application will not run if one or more jumpers are removed.
14 January 6, 2009
CHAPTER 3

Hardware Description

This chapter provides the hardware description for the LM3S811 microcontroller including the peripherals included in the evaluation kit.

LM3S811 Microcontroller

Device Overview

The heart of the EVB is a Stellaris LM3S811 ARM® Cortex™-M3-based microcontroller. The LM3S811 offers 64 KB flash memory, 50-MHz operation, a 4-channel ADC, and a wide range of peripherals. Refer to the LM3S811 data sheet (order number DS-LM3S811) for complete device details.
The LM3S811 microcontroller is factory programmed with a quickstart demo program. The quickstart program resides in the LM3S811 on-chip flash memory and runs each time power is applied, unless ICDI mode is in use, or the quickstart has been replaced with a user program.

Clocking

A single external 6.0-Mhz crystal drives the LM3S811 microcontroller. All required internal clocks are generated automatically within the device. The LM3S811 microcontroller is designed to run the ARM Cortex core at 50 Mhz on this evaluation board.

Reset

The LM3S811 microcontroller shares its external reset input with the OLED display. Reset is asserted (Active Low) under any one of the following conditions:
Power -o n rese t (d ur at ion set by resis to r R1 an d ca pacitor C17)Reset switch SW2 is held downIn ICDI modeBy the USB device controller (U2 FT2232), when instructed by the debugger
The Keil RVMDK debugger does not support external reset. Instead, the target device is reset using JTAG operations. In ICDI mode, the reset push-switch has no effect.

Power Supply

The LM3S811 is powered from a +3.3-V supply rail that is common to all devices on the EVB. A low-dropout (LDO) regulator regulates +5 V power from the USB cable to +3.3 V. +3.3 V at up to 100 mA is available for powering external circuits at break-out pin 20.

Debugging

Stellaris microcontrollers support programming and debugging using either JTAG or SWD. JTAG uses the TCK, TMS, TDI, and TDO signals. SWD requires fewer signals—SWCLK, SWDIO, and SWO. The debugger determines which debug protocol is used. For example, Keil RVMDK tools support only JTAG debugging.
January 6, 2009 15
Hardware Description
JT AG/SWD signals are multiplexed with GPIO functions inside the Stellaris microcontroller. Do not configure JTAG/SWD pins (including PB7/TRST programming and debugging.
) as GPIO. Doing this prevents in-circuit

USB Device Controller Functions

Device Overview

An FT2232 device from Future Technology Devices International Ltd manages USB-to-serial conversion. The FT2232 is factory configured by Luminary Micro to implement a JTAG/SWD port (synchronous serial) on channel A and a Virtual COM Port (VCP) on channel B. This feature allows two simultaneous communications links between the host computer and the target device using a single USB cable. Separate Windows drivers for each function are provided on the Documentation and Software CD.
A small serial EEPROM holds the FT2232 configuration data. The EEPROM is not accessible by the LM3S811 microcontroller.
For full details on FT2232 operation, go to www.ftdichip.com.

USB to JTAG/SWD

The FT2232 USB device performs JT AG/SWD serial operations under th e control of the debugger. Two 74LV125 hex buffers multiplex SWD and JTAG functions and provide direction control for the bi-directional data line when working in SWD mode.

Virtual COM Port

The Virtual COM Port (VCP) allows Windows applications (such as HyperTerminal) to communicate with UART0 on the LM3S811 over USB. Once the FT2232 VCP driver is installed, Windows assigns a COM port number to the VCP channel.
For more information, see Using the Virtual COM Port on page 21.

Organic LED Display

The EVB features an Organic LED (OLED) graphics display with 96 x 16 pixel resolution. OLED is a new technology that offers many advantages over LCD display technology.

Features

Osram OS096016 series display96 columns by 16 rows1 bit/pixel monochromeHigh-contrast (typ. 2000:1)Excellent brightness (120 cd/mFast response

Control Interface

The OLED display has a built-in controller IC (SSD0303) with synchronous serial and I2C interfaces. I has a fixed I
2
C is used on the EVB as it only requires two microcontroller pins. The OLED display
2
C address of 0x3d. The Stellaris driver library (DriverLib) (included on the
2
)
16 January 6, 2009
Documentation and Software CD) contains complete drivers with source-code for the OLED display.
Note that the SSD0303’s I Designers should refer to the SSD0303 datasheet before connecting other I

Power Supply

A +9 V supply is needed to bias the OLED display. Conveniently, the SSD0303 IC includes an on-chip voltage boost controller. A few external components complete the simple switching power supply. This supply is dedicated to the OLED display and should not be used to power other devices.

Design Guidelines

The OLED display has a lifetime of about 10,000 hours. It is also prone to degrad ation due to burn­in, similar to CRT and plasma displays. The quickstart application includes both a screen-saver and a power-down mode to extend display life. These factors should be considered when developing EVB applications that use the OLED display.
When using the EVB as an In-Circuit Debug Interface (ICDI), the OLED display is held in reset to reduce power consumption and eliminate display wear-out.

Further Reference

Stellaris® LM3S811 Evaluation Board
2
C bus implementation is not 100% compliant with the I2C specification.
2
C devices to the bus.
For additional information on the OS096016 OLED display, visit www.osram-os.com. Full details on the SSD0303 controller are available from Solomon Systech, Ltd.
(www.solomon-systech.com).

Other Peripherals

Thumbwheel Potentiometer

A thumbwheel potentiometer connects to Channel 0 of the Analog-to-Digital Converter (ADC). A padding resistor (R31) sets the voltage range to 0 to 3.0 V. This corresponds with the full-scale range of the LM3S811’s 10-bit ADC. The ADC input voltage increases with clockwise potentiometer rotation.

User LED

A user LED (D2) is provided for general use. The LED is connected to PC5/CCP1, allowing the option of either GPIO or PWM control (brightness control). Refer to the Quickstart Application source code for an example of PWM control.

User Pushbutton

A user pushbutton (SW1) is provided for general use. The switch interfaces to PC4 of the LM3S811.

Bypassing Peripherals

The EVB’s on-board peripheral circuits require seven GPIO lines, leaving up to 25 GPIO lines immediately available for connection to external circuits. If all GPIO lines are needed, then the on-board hardware can be bypassed. The EVB is populated with seven 0-ohm resistor jumpers, which can be removed to isolate on-board hard wa re .
January 6, 2009 17
Hardware Description
LM3S811 EVB
Target
Board
Stellaris
MC U
JTAG/SWD
Tar g et C abl e
`
USB
PC with IDE/ debugger
Stellaris
MCU
This LM 3 S811 is held in re set
Important: The quickstart application will not run if one or more jumpers are removed. Table 3-1. Isolating On-Board Hardware
MCU Pin EVB Function To Isolate, Remove...
Pin 33 PB2/I2CSCL I2C SCL to Display JP1 Pin 34 PB3/I2CSDA I2C SDA to Display JP2 Pin 17 PA0/U0Rx VCP Receive JP3 Pin 18 PA1/U0Tx VCP Transmit JP4 Pin 1 ADC0 ADC Input from Thumbwheel Potentiometer JP5 Pin 14 GPIO PC4 User Push Switch Input JP6 Pin 29 GPIO PC4 User LED output JP7

Interfacing to the EVB

An array of accessible I/O signals makes it easy to interface the EVB to external circuits. All LM3S811 I/O lines (except those with JT AG functions) are brought out to 0.1” pitch pads. For quick reference, silk-screened labels on the PCB show primary pin functions.
Table B-1 on page 32 has a complete list of I/O signals as well as recommended connectors. Most LM3S811 I/O signals are +5-V tolerant. 5-V tolerant pins will not be damaged when
connected to 5-V logic circuits. It is recommended that datasheets be checked for compatibility when mixing logic types. Refer to the LM3S811 datasheet for detailed electrical specifications.

Using the In-Circuit Debugger Interface

The Stellaris L M3S811 Evaluation Kit can operate as an In-Circuit Debugger Interface (ICDI). ICDI acts as a USB to the JTAG/SWD adaptor, allowing debugging of any external target board that uses a Stellaris micr ocontroller.
Figure 3-1. ICD Interface Mode
The debug interface operates in either Serial-Wire Debug (SWD) or full JTAG mode, depending on the configuration in the debugger IDE.
The Keil RVMDK does not distinguish between normal Evaluation Board mode and ICDI mode. The only requirement is that the correct Stellaris device is selected in the project configuration.

ICDI Features

ICDI includes the following features:
18 January 6, 2009
Standard ARM® 20-pin JTAG debug connectorUSB 2.0 full sp ee d int er fa ce allows JTAG/SWD debug Compatible with leading ARM Integrated Development Environment (IDE) packages including
Keil RVMDK.

Enabling ICDI Mode

ICDI mode is enabled when the 20-pin JTAG/SWD target cable is connected to an external t arget. In this mode, the on-EVB LM3S811 microcontroller and OLED display are held in reset. Applications can not be executed in the on-EVB microcontroller when the EVB is connected as an ICDI device.

ARM Target Cable

The evaluation kit includes a 3-inch target cable for connecting the EVB to an external target. Cables up to 8-inch long can be used if required.
Target cable pin assignments are compatible with the ARM 20-pin standard (see Table B-3 on page 33). The target board must have GND connections on even pins from 4 through 20, otherwise the ICDI is not enabled when the target is connected. In this case, there will be conflict between the JTAG/SWD signals on the LM3S811evaluation board and the external Stellaris device.
Stellaris® LM3S811 Evaluation Board
When using the kit as an evaluation board, do not make connections to the debug out connector.

Starting ICDI

With the USB cable removed, connect the EVB to a Stellaris microcontroller-based target board using the 20-pin JTAG/SWD target cable included in the Stellaris LM3S811 Evaluation Kit.
The red stripe on the cable should match pin 1 on both the EVB debug out connector and the target. When inserted correctly, the polarizing tab on the connector fits into the slot on the EVB PCB, so that the ribbon cable exits away from you.
Apply power to the target device, and then connect the USB cable to the LM3S811 Evaluation Board. The OLED display should not show any informa tion. If it does display an image, then che ck the target JTAG/SWD connections to ensure the on-EVB LM3S811 microcontroller is being held in reset.
The Keil RVMDK is now be able to program and debug the target Stellaris microcontroller.
January 6, 2009 19
Hardware Description
20 January 6, 2009
VCP Driver Installed VCP Device Missing
CHAPTER 4

Communications

This chapter describes available communication for the LM3S811 microcontroller through the Virtual COM Port and the Windows application, HyperTerminal.

Using the Virtual COM Port

The Virtual COM Port (VCP) is a convenient way for Windows applications to communicate with UART0 on the LM3S811 microcontroller over USB. It offers all the capabilities of a standard RS232 interface without an additional cable.

Confirming Driver Installation

The VCP device driver is normally installed as p art of the quickst art process. Confirm that the VCP device driver is installed by doing the following.
1. Connect the EVB to a PC using the USB cable supplied in the evaluation kit.
2. Open the Windows Device Manager, by either holding down the Windows Key and pressing
the Pause/Break key, or, from the Start Menu, selecting Control Panel and then clicking on the System Icon.
3. Select the Hardware Tab, and click the Device Manager button.
4. In Device Manager , scroll down until you see Ports (COM & LPT). Click to expand this item.
You should see a device called LM3S811 Virtual COM Port (COM).
Figure 4-1. Check VCP Driver Installation
The Windows operating system assigns the COM Port number automatically. It may change if the EVB is reconnected.
If Device Manager does not show the LM3S811 Virtual COM Port device, or if there is a question mark by the device, it will be necessary to install or reinstall the device driver.
January 6, 2009 21
Communications

Installing the VCP Device Driver

When the EVB is first connected to a USB port, Windows automatically starts a driver installation wizard. The following steps guide you through the installation wizard.
1. Connect the EVB to an available USB port using the USB cable supplied in the kit. In the
Found New Hardware Wizard window, select “No, not this time” and click Next.
2. Select “Install from a list or specific location (Advanced)” and click Next.
22 January 6, 2009
Stellaris® LM3S811 Evaluation Board
3. Insert the Stellaris® LM3S811 Evaluation Kit Documentation and Software CD in the CD-ROM
drive. Select “Search removable media (floppy, DR-ROM…)” and click Next.
4. Windows locates the driver on the Documentation and Software CD and start installing the
driver. A warning dialog like the one below pops up. Click Continue Anyway.
January 6, 2009 23
Communications
5. VCP drivers are now installed. Click Finish.
You may want to use Device Manager to identify the COM Port assignment. Now that drivers are installed, Windows automatically assign a COM port to the LM3S811
Evaluation Board each time it is connected.

About HyperTerminal

HyperTerminal is an ASCII terminal emulator that is included with Windows. It provides an easy way to transfer ASCII data to and from the LM3S811 Evaluation Board using the Virtual COM port feature.
The quickstart application sends a running tally of the game score through UART0 of the LM3S811.

Starting HyperTerminal

1. From the Windows XP Start menu, select:
Start > All Programs > Accessories > Communications > HyperTerminal
2. HyperTerminal asks for a name and icon to associate with the terminal profile you are about to
create. Neither the name nor the icon selection is critical.
24 January 6, 2009
Stellaris® LM3S811 Evaluation Board
3. Click OK to continue.
4. Select the COM port assigned to the LM3S811 Evaluation Board. In the example below, it is
COM7. Click OK.
January 6, 2009 25
Communications
5. Use the Properties dialog box to set the Port Settings. The quicksta rt application sends data at
115200 baud , 8 da ta bits, no parity, 1 stop bit, and no flow-control. Click OK.
6. HyperTerminal now starts. When the quickstart game is played, score data is visible in the
terminal window. Save the terminal settings when exiting HyperTerminal.
26 January 6, 2009
APPENDIX A

Schematics

Schematics for the Stellaris LM3S811 Evaluation Board follow.
January 6, 2009 27
Figure A-1. LM3S811 Microcontroller (sheet 1 of 2)
1
1
2
2
3
3
4
4
5
5
6
6
D D
C C
B B
A A
Document Number:
RevSheetDate:
of
9/3/2006 1 2
Drawing Title:
Page Title:
Size
LM3S811 Evaluation Board
MCU, Peripherals and I/O Breakout
B
A2
1
0.1UF
C10
0.1UF
C11
0.1UF
C12
0.1UF
C13
+3.3V
0.1UF
C14
1UF
C15
LDO
OSC0
PB6/C0+
R1
10K
+3.3V
SW1
SW-PB
R8
50K
Peripheral Devices
GND
+3.3V
R9
10K
+3.3V
PA0/U0Rx
PA1/U0Tx
PA2/SSIClk
PA3/SSIFss
PA4/SSIRx
PA5/SSITx
PC4
PC5/CCP1
PC6/CCP3
PC7/CCP4
PE0/PWM4
PE1/PWM5
ADC3
ADC2
ADC1
ADC0
PD7/C0O
PD6/Fault
PD5/CCP2
PD4/CCP0
PD3/U1Tx
PD2/U1Rx
PD1/PWM1
PD0/PWM0
PB7
PB0/PWM2
PB1/PWM3
PB4/C0-
PB5/CCP5
PB3/I2CSDA
PB2/I2CSCL
PA2/SSIClk
PA3/SSIFss
PA4/SSIRx
PA5/SSITx
PD0/PWM0
PD1/PWM1
PB0/PWM2
PB1/PWM3
PE0/PWM4
PE1/PWM5
PB3/I2CSDA
PB2/I2CSCL
PB7
PB6/C0+
PB4/C0-
PD6/Fault
PD7/C0O
ADC0
ADC1
ADC2
ADC3
PB5/CCP5
PC7/CCP4
PC6/CCP3
PD5/CCP2
PC5/CCP1
PC4
PA0/U0Rx
PA1/U0Tx
PD2/U1Rx
PD3/U1Tx
GND
GND
GND
GND
PD4/CCP0
GND
+3.3V
RESETn
RESETn
ADC0
PC4
Thumbwheel Potentiometer
User Push Button
Status LED
R10
220
D2
Green
PC5/CCP1
Eval Reset Switch
NC1VSS2GDR3VDDB4FB5RESE6VBREF7NC8NC9NC10VDD11BS112BS213NC14CSn15RESn16D/Cn17R/Wn18E/RDn19D020D121D222D323D424D525D626D727IREF28VCOMH29VCC30N.C.
31
U2
OSRAM
GND
Q1
BSS123
R3
10KR41.5K
1UF
C3
100uH
L1
+3.3V
1UF
C1
+3.3V
1UF
C6
R7
620K
GND GN D
GND
96x16 OLED
DISPLAY
R2
10
1UF
C5
JP5
JP6
JP7
JP1
JP2
R5
2.2K
R6
2.2K
+3.3V +3.3V
OLED Voltage Boost Circuit
+9V
PB2/I2CSCL
PB3/I2CSDA
I/O Breakout Headers
Remove JP1..7 (0603 Resistors) to
Revision Date Description
0 Aug 2, 06 Release for Rev 0 PCB
History
JP3
JP4
PA0/U0Rx
PA1/U0Tx
TCK/SWCLK
TMS/SWDIO
TDI
TDO
VCP_TX
VCP_RX
PA0/U0Rx17PA1/U0Tx18PA2/SSIClk19PA3/SSIFss20PA4/SSIRx21PA5/SSITx22PC0/TCK/SWCLK40PC1/TMS/SWDIO39PC2/TDI38PC3/TDO/SWO37PC414PC5/CCP113PC6/CCP312PC7/CCP4
11
PD0/PWM025PD1/PWM1
26
PD2/U1Rx
27
PD3/U1Tx
28
PD4/CCP045PD5/CCP2
46
PD6/Fault
47
PD7
48
VDD7VDD15VDD23VDD
32
GND8GND16GND24GND
31
RST
5
LDO
6
OSC09OSC1
10
PB0/PWM229PB1/PWM3
30
PB2/I2CSCL
33
PB3/I2CSDA
34
PB4/C0-
44
PB5/CCP5
43
PB6/C0+
42
PB7/TRST
41
PE0/PWM435PE1/PWM5
36
ADC34ADC23ADC12ADC0
1
U1
LM3S811
USB_RSTn
6MHZ_CLOCK
1 2
Y1
6.00MHz 18PF
C8
18PF
C9
free GPIO lines as required.
D3
CD0603-S0180
1UF
C4
1UF
C7
SW2
SW-PB
EXTDBGENn
R30
10K
+3.3V
4038373635343331302928272625242322
21
32
2345678
9
101112131415161718
19
20
39
Pin 1 is Omitted
R31
4.7K
1
A Aug 18, 06 Release for Rev A PCB
+3.3V
RESETn
GND
for Polarizat ion
LEDPWRIN
R32
10
R33
10
A1 Aug 21, 06 D5,D6 function redundant - change to resistors. Change R2 to 10 ohms.
A2 Aug 30, 06 Add C17 (0.1uF) to reset circuit.
0.1UF
C17
OS096016PP08MG1B10
OS096016PP08MO1B10
OS096016PP08MY0B10
28 January 6, 2009
Figure A-2. LM3S811 Microcontroller (sheet 2 of 2)
1
1
2
2
3
3
4
4
5
5
6
6
D D
C C
B B
A A
Document Number:
RevSheetDate:
of
9/3/2006 2 2
Drawing Title:
Page Title:
Size
LM3S811 Evaluation Board
USB and Debugger Interfaces
B
A2
2
FB1
60ohm @ 100 MHz
FB2
60ohm @ 100 MHz
GND18GND25GND
34
ADBUS024ADBUS123ADBUS222ADBUS321ADBUS420ADBUS519ADBUS617ADBUS7
16
ACBUS015ACBUS113ACBUS212ACBUS311BDBUS040BDBUS139BDBUS238BDBUS337BDBUS436BDBUS535BDBUS633BDBUS7
32
BCBUS030BCBUS129BCBUS228BCBUS3
27
SI/WUA
10
SI/WUB
26
GND9AGND
45
VCC3VCC
42
VCCIOA
14
VCCIOB
31
AVCC
46
PWREN#
41
XTOUT44XTIN
43
EECS48EESK1EEDATA2TEST47RESET#4RSTOUT#
5
3V3OUT6USBDM8USBDP
7
U4
FT2232C
+3.3v
+5V
R11 27
R12 27
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
P1
Header 10X2
DBG_SWD_EN
R13
10K
R19
10K
+3.3V
+3.3V
R16
10K
DBG_JTAG_EN
R14
10K
R17
10K
R18
2.2K
R15
1.5K
R21
10K
R20
10K
R22
470
+5V
+5V
+5V+5V
XTDI
XTMS
TCK/SWCLK
TDI/DO
TDO/DI
TMS/OUTEN
1UF
C26
1UF
C27
+3.3V+5V
0.1UF
C23
0.1UF
C19
0.1UF
C20
0.1UF
C21
0.1UF
C22
0.1UF
C16
+3.3V
R23
220
D1
Power LED
USB Device Controller
Channel A : JTAG / SW Debug
Channel B : Virtual Com Port
USB +5V to +3.3V 300mA Power Supply
External Debug Interface
R26
27
R24
27
R25
27
XTCK
XTDO
R27
27
2
1
3
U3A
74LVC126APWR
5
4
6
U3B
74LVC126APWR
9
10
8
U3C
74LVC126APWR
12
13
11
U3D
74LVC126APWR
7 14
U5E
74LVC126APWR
2
1
3
U5A
74LVC126APWR
5
4
6
U5B
74LVC126APWR
9
10
8
U5C
74LVC126APWR
7 14
U3E
74LVC126APWR
12
13
11
U5D
74LVC126APWR
+3.3V +3.3V
0.1UF
C24
VCP_TX
VCP_RX
TCK/SWCLK
TDI
TDO
TMS/SWDIO
Active in JTAG Mode : U3B, U3C, U5A
Active in SWD Mode : U3D, U5C, U5D (depending on direction)
USB_RSTn
C30
47PF
+3.3V
GND
+3.3V
6MHZ_CLOCK
Locate U3A close to U1 Oscillator
R28
10K
+3.3V
R29
10K
+3.3V
Pin 11 is Keyed
5V D- D+ ID G
1
2
3
4
7
5
6
P2
USB MINI-B Receptacle
OUT
1
SENSE
3
VEN
6
GND
4
BYPASS
5
GND
7
IN
2
U7
LP3981ILD-3.3
0.1UF
C25
GND
EXTDBGENn
CS
1
SK
2
DI
3
DO
4
GND5ORG6NC7VCC
8
1K 64X16
U6
CAT93C46
Stellaris® LM3S811 Evaluation Board
January 6, 2009 29
30 January 6, 2009
APPENDIX B

Connection Details

This appendix contains the following sections:
Component LocationsEvaluation Board DimensionsI/O Breakout Pads and Recommended ConnectorsARM Target Pinout

Component Locations

Figure B-1. Component Locations

Evaluation Board Dimensions

Figure B-2. Evaluation Board Dimensions
January 6, 2009 31

I/O Breakout Pads and Recommended Connectors

The LM3S811 EVB has 32 I/O pads, 6 power pads, and a reset signal, for a total of 39 pads. Connection can be made by soldering wires directly to these pads, or by using 0.1” pitch headers and sockets.
Table B-1. I/O Breakout Pads
Pad No. Description Pad No. Description
1 BLANK 40 ADC3 2 PC7/CCP4 39 ADC2 3 PB5/CCP5 38 ADC1 4 PD6/Fault 37 ADC0 5PC4 6PA0/U0Rx 7PA1/U0Tx
a
a
a
36 GND 35 PD4/CCP0
34 PC5/CCP1 8 PA2/SSIClk 33 PD5/CCP2 9 PA3/SSIFss 32 PC6/CCP3
10 PA4/SSIRx 31 GND
a
11 PA5/SSITx 30 PD7/C0O 12 PD1/PWM1 29 PB4/C0­13 PD0/PWM0 28 PB6/C0+ 14 GND 27 PB7
b
15 PD2/U1Rx 26 PE0/PWM4 16 PD3/U1 Tx 25 PE1/PWM5 17 PB0/PWM2 24 PB3/I2CSDA 18 PB1/PWM3 23 PB2/I2CSCL
a
a
19 GND 22 RESET 20 +3.3V 21 GND
a. Indicates an I/O line that is used by EVB hardware. b. PB7 should not be used as a GPIO.
Table B-2. Recommended Connectors
Pins 2-20 (19 way) Socket Sullins PPPC191LFBN-RC Digikey S7052-ND
Pin Header Sullins PTC19SAAN Digikey S1012-19-ND
Pins 21-40 (20 way) Socket Sullins PPPC201LFBN-RC Digikey S7053-ND
Pin Header Sullins PTC20SAAN Digikey S1012-20-ND
32 January 6, 2009

ARM Target Pinout

In ICDI mode, the Stellaris LM3S811 Evaluation Kit supports ARM’s standard 20-pin JTAG/SWD configuration. The same pin configuration can be used for debugging over Serial Wire De bug (SWD) and JTAG interfaces. The debugger software, running on the PC, determines which interface protocol is used.
The Stellaris target board should have a 2x10 0.1” pin header with signals as indicated in Table B-3.
Table B-3. 20-Pin JTAG/SWD Configuration
Function Pin Pin Function
nc 1 2 nc nc 3 4 GND TDI 5 6 GND TMS 7 8 GND TCK 9 10 GND
Stellaris® LM3S811 Evaluation Board
nc 11 12 GND TDO 13 14 GND nc 15 16 GND nc 17 18 GND nc 19 20 GND
ICDI does not control RST
(device reset) or TRST (test reset) signals. Both reset functions are
implemented as commands over JTAG/SWD, so these signals are not necessary.
January 6, 2009 33
34 January 6, 2009
APPENDIX C

Contact Information

Company Information

Luminary Micro, Inc. designs, markets, and sells ARM Cortex-M3-based microcontr ollers (MCUs). Austin, Texas-based Luminary Micro is the lead partner for the Cortex-M3 pr ocessor , delivering the world's first silicon implementation of the Cortex-M3 processor. Luminary Micro's introduction of the Stellaris® family of products provides 32-bit performance for the same price as current 8- and 16-bit microcontroller designs. With entry-level pricing at $1.00 for an ARM technology-based MCU, Luminary Micro's Stellaris product line allows for standardization that eliminates future architectural upgrades or software tool changes.
Luminary Micro, Inc. 108 Wild Basin, Suite 350 Austin, TX 78746 Main: +1-512-279-8800 Fax: +1-512-279-8879 http://www.luminarymicro.com

Support Information

For support on Luminary Micro products, contact: support@luminarymicro.com
+1-512-279-8800, ext. 3
January 6, 2009 35
36 January 6, 2009
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