Related Manuals for Texas Instruments Stellaris LM3S1968
Summary of Contents for Texas Instruments Stellaris LM3S1968
- Page 1 Stellaris® LM3S1968 Evaluation Board User ’s Manual EK-LM3S196 8-03 Co pyrigh t © 2 007– 201 0 Te xas In strumen ts...
- Page 2 Copyright Copyright © 2007–2010 Texas Instruments, Inc. All rights reserved. Stellaris and StellarisWare are registered trademarks of Texas Instruments. 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.
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Page 3: Table Of Contents
Stellaris® LM3S1968 Evaluation Board Table of Contents Chapter 1: Stellaris® LM3S1968 Evaluation Board ..................7 Features................................8 Block Diagram ..............................8 Evaluation Kit Contents ............................9 Evaluation Board Specifications ........................9 Features of the LM3S1968 Microcontroller......................9 Chapter 2: Hardware Description........................11 LM3S1968 Evaluation Board .......................... - Page 4 List of Tables Table 2-1. Stellaris LM3S1968 Evaluation Board Hardware Debugging Configurations........ 12 Table 2-2. Isolating On-Board Hardware......................15 Table B-1. I/O Breakout Pads ......................... 27 Table B-2. Recommended Connectors......................28 Table B-3. 20-Pin JTAG/SWD Configuration ....................28 January 6, 2010...
- Page 5 Stellaris® LM3S1968 Evaluation Board List of Figures Figure 1-1. Stellaris LM3S1968 Evaluation Board Layout ................. 7 Figure 1-2. LM3S1968 Evaluation Board Block Diagram .................. 8 Figure 2-1. ICD Interface Mode ........................16 Figure B-1. Component Locations ........................25 Figure B-2. LM3S1968 Evaluation Board Dimensions..................26...
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Page 7: Chapter 1: Stellaris® Lm3S1968 Evaluation Board
Stellaris® LM3S1968 Evaluation Board The Stellaris® LM3S1968 Evaluation Board is a compact and versatile evaluation platform for the Stellaris LM3S1968 ARM® Cortex™-M3-based microcontroller. The evaluation kit design highlights the LM3S1968 microcontroller's peripherals and its Hibernation module. A 3V lithium battery, included in the kit, supplies power to the Hibernation module and maintains data and real-time clock information for about two years in the absence of USB power. -
Page 8: Features
Stellaris® LM3S1968 Evaluation Board Features The Stellaris LM3S1968 Evaluation Kit includes the following features: Stellaris LM3S1968 microcontroller Simple setup; USB cable provides serial communication, debugging, and power OLED graphics display with 128 x 96 pixel resolution User LED, navigation switches, and select pushbuttons Ω... -
Page 9: Evaluation Kit Contents
• Code Sourcery GCC development tools • Code Red Technologies development tools • Texas Instruments’ Code Composer Studio™ IDE – Complete documentation – Quickstart application source code – Stellaris® Firmware Development Package with example source code Evaluation Board Specifications Board supply voltage: 4.37–5.25 Vdc from USB connector... - Page 10 Stellaris® LM3S1968 Evaluation Board Eight 10-bit ADC channels (inputs) when used as single-ended inputs Three independent integrated analog comparators Two I C modules Three PWM generator blocks – One 16-bit counter – Two comparators – Produces two independent PWM signals –...
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Page 11: Chapter 2: Hardware Description
Hardware Description In addition to a microcontroller, the Stellaris LM3S1968 evaluation board includes a range of useful peripherals and an integrated in-circuit debug interface (ICDI). This chapter describes how these peripherals operate and interface to the microcontroller. LM3S1968 Evaluation Board LM3S1968 Microcontroller Overview The heart of the EVB is a Stellaris LM3S1968 ARM Cortex-M3-based microcontroller. -
Page 12: Power Supplies
Hardware Description Internal debug mode—By the USB device controller (U5 FT2232) when instructed by debugger The LM3S1968 microcontroller has an internal power-on reset, so the external circuits used in the EVB are not required in typical applications. Power Supplies In normal operating mode, the LM3S1968 is powered from a +3.3-V supply. A low drop-out (LDO) regulator converts +5-V power from the USB cable to +3.3-V. -
Page 13: Usb Device Controller Functions
Stellaris® LM3S1968 Evaluation Board Debug In Considerations Debug Mode 3 supports evaluation board debugging using an external debug interface. Mode 3 is automatically selected when a device such as a Segger J-Link or Keil ULINK is connected. Boards marked Revision B or later automatically configure pin 1 to be a 3.3-V reference, if an external debugger is connected. -
Page 14: Serial Wire Out
Hardware Description Serial Wire Out The evaluation board supports the Cortex-M3 serial-wire output (SWO) trace capabilities. Under debugger control, the CPLD can route the SWO datastream to the virtual communication port (VCP) transmit channel. The debugger can then decode and interpret the trace information received from the VCP. -
Page 15: Other Peripherals
Stellaris® LM3S1968 Evaluation Board Other Peripherals Speaker The LM3S1968 evaluation board's speaker circuit can be used in either tone or waveform mode. The quick-start application uses tone mode. In tone mode, the LM3S1968 microcontroller's PWM module directly generates tones within the audible frequency range. -
Page 16: Figure 2-1. Icd Interface Mode
Using the In-Circuit Debugger Interface The Stellaris LM3S1968 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 microcontroller. See “Debugging Modes” on page 12 for a description of how to enter Debug Out mode. - Page 17 Stellaris® LM3S1968 Evaluation Board The debug interface operates in either serial-wire debug (SWD) or full JTAG mode, depending on the configuration in the debugger IDE. The IDE/debugger does not distinguish between the on-EVB Stellaris microcontroller and an external Stellaris microcontroller. The only requirement is that the correct Stellaris device is selected in the project configuration.
- Page 18 Hardware Description January 6, 2010...
- Page 19 A P P E N D I X A Schematics This section contains the schematics for the LM3S1968 Evaluation Board: LM3S1968 Microcontroller on page 20 OLED Display, Switches and Audio on page 21 USB and Debugger Interfaces on page 22 USB, Debugger Interfaces and Power on page 23 JTAG Logic with Auto Mode Detect and Hibernate on page 24 January 6, 2010...
- Page 20 INT_TCK TMS/SWDIO PC2/TDI PC3/TDO/SWO ADC0 ADC1 ADC2 ADC3 History Revision Date Description 8/9/07 Final prototype release Drawing Title: Stellaris LM3S1968 Evaluation Board Page Title: LM3S1968 Microcontroller Size Document Number: EK-LM3S1968 Date: Sheet 3/4/2008...
- Page 21 FDG6322C +3.3V SOUND+ SOUND- 200K 0.1UF 200K 0.1UF LED3 Power Green DBG+3.3V 0.2W Audio Amplifier LED4 Hibernate HIBERNATEn Drawing Title: Stellaris LM3S1968 Evaluation Board Page Title: OLED Display, Switches and Audio Status LEDs Size Document Number: EK-LM3S1968 Date: Sheet 3/4/2008...
- Page 22 Drawing Title: Page Title: Size Document Number: Date: Sheet 3/4/2008...
- Page 23 Debugger +3.3V 200mA Power Supply +15V NR4018T100M MBR0520 10uH 200K 120pF 4.7UF 4.7UF EN+15V SHDNn 17.8K FAN5331 Drawing Title: Stellaris LM3S1968 Evaluation Board +15V 50mA Power Supply for OLED Display Page Title: USB, Debugger Interfaces and Power Size Document Number: EK-LM3S1968 Date: Sheet 3/4/2008...
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Page 25: Figure B-1. Component Locations
A P P E N D I X B Connection Details This appendix contains the following sections: Component Locations Evaluation Board Dimensions I/O Breakout Pads ARM Target Pinout References Component Locations Figure B-1. Component Locations January 6, 2010... -
Page 26: Figure B-2. Lm3S1968 Evaluation Board Dimensions
Evaluation Board Dimensions Evaluation Board Dimensions Figure B-2. LM3S1968 Evaluation Board Dimensions January 6, 2010... -
Page 27: Table B-1. I/O Breakout Pads
Stellaris® LM3S1968 Evaluation Board I/O Breakout Pads The LM3S1968 EVB has 58 I/O pads, 13 power pads, and 1 control connection, for a total of 71 pads. Connection can be made by soldering wires directly to these pads, or by using 0.1” pitch headers and sockets. - Page 29 Stellaris® LM3S1968 Evaluation Board References In addition to this document, the following references are included on the Stellaris LM3S1968 Evaluation Kit CD-ROM and are also available for download at www.ti.com/stellaris: Stellaris LM3S1968 Evaluation Kit Quickstart Guide for appropriate tool kit (see “Evaluation Kit Contents,”...
- Page 30 References January 6, 2010...
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Page 31: Important Notice
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.