本文介紹了LM3S9B96 MCU Cortex-M3處理器方框圖以及Stellaris® LM3S9B96開發板主要特性,方框圖,電路圖和擴展板電路圖.
LM3S9B96是TI 公司的基于ARM Cortex-M3 的32位MCU,具有先前8位和16位MCU的價格成本, CPU工作頻率80MHz,100DMIPS性能, ARM Cortex SysTick定時器,片內具有高達50MHz的256KB單周期閃存和96KB單周期SRAM,內部的ROM加載了StellarisWare軟件, 具有擴展的外設接口和串行接口,目標應用在遙控監視,POS銷售機,測試測量設備,網絡設備和交換,工廠自動化,HVAC和建筑物控制,游戲設備,運動控制,醫療設備,電源和交通運輸,防火和安全等.
LM3S9B96目標應用:
The Stellaris family is positioned for cost-conscious applications requiring significant control processing and connectivity capabilities such as:
■ Remote monitoring
■ Electronic point-of-sale (POS) machines
■ Test and measurement equipment
■ Network appliances and switches
■ Factory automation
■ HVAC and building control
■ Gaming equipment
■ Motion control
■ Medical instrumentation
■ Fire and security
■ Power and energy
■ Transportation
圖1.Stellaris LM3S9B96方框圖
圖2.Stellaris LM3S9B96 Cortex-M3處理器方框圖
Stellaris® LM3S9B96開發板
The Stellaris® LM3S9B96 Development Board provides a platform for developing systems around the advanced capabilities of the LM3S9B96 ARM® Cortex™-M3-based microcontroller.
The LM3S9B96 is a member of the Stellaris Tempest-class microcontroller family. Tempest-class devices include capabilities such as 80 MHz clock speeds, an External Peripheral Interface (EPI) and Audio I2S interfaces. In addition to new hardware to support these features, the DK-LM3S9B96 board includes a rich set of peripherals found on other Stellaris boards.
The development board includes an on-board in-circuit debug interface (ICDI) that supports both JTAG and SWD debugging. A standard ARM 20-pin debug header supports an array of debugging solutions.
The Stellaris® LM3S9B96 Development Kit accelerates development of Tempest-class microcontrollers. The kit also includes extensive example applications and complete source code.
LM3S9B96開發板主要特性:
The Stellaris® LM3S9B96 Development Board includes the following features.
Simple set-up—USB cable provides debugging, communication, and power
Flexible development platform with a wide range of peripherals
Color LCD graphics display
– TFT LCD module with 320 x 240 resolution
– Resistive touch interface
80 MHz LM3S9B96 microcontroller with 256 K Flash, 96 K SRAM, and integrated Ethernet MAC+PHY, USB OTG, and CAN communications
– – 8 MB SDRAM (plug-in EPI option board)
– – EPI break-out board (plug-in option board)
1 MB serial Flash memory
Precision 3.00 V voltage reference
SAFERTOS™ operating system in microcontroller ROM
I2S stereo audio codec
– Line In/Out
– Headphone Out
– Microphone In
Controller Area Network (CAN) Interface
10/100 BaseT Ethernet
USB On-The-Go (OTG) Connector
– Device, Host, and OTG modes
User LED and push button
Thumbwheel potentiometer (can be used for menu navigation)
MicroSD card slot
Supports a range of debugging options
– Integrated In-circuit Debug Interface (ICDI)
– JTAG, SWD, and SWO all supported
– Standard ARM® 20-pin JTAG debug connector
USB Virtual COM Port
Jumper shunts to conveniently reallocate I/O resources
Develop using tools supporting Keil™ RealView® Microcontroller Development Kit (MDK-ARM), IAR Embedded Workbench, Code Sourcery GCC development tools, Code Red Technologies development tools, or Texas Instruments’ Code Composer Studio™ IDE
Supported by StellarisWare® software including the graphics library, the USB library, and the peripheral driver library
An optional Flash and SRAM memory expansion board (DK-LM3S9B96-EXP-FS8) is also available for use with the DK-LM3S9B96 development board
– Works with the External Peripheral Interface (EPI) of the Stellaris microcontroller
– Provides Flash memory, SRAM, and an improved performance LCD interface
LM3S9B96開發板包括:
The Stellaris® LM3S9B96 Development Kit contains everything needed to develop and run a range of applications using Stellaris microcontrollers:
LM3S9B96 development board
8 MB SDRAM expansion board
EPI signal breakout board
Retractable Ethernet cable
USB Mini-B cable for debugger use
USB Micro-B cable for OTG-to-PC connection
USB Micro-A to USB A adapter for USB Host
USB Flash memory stick
microSD Card
20-position ribbon cable
CD containing:
– A supported version of one of the following (including a toolchain-specific Quickstart
guide):
• Keil™ RealView® Microcontroller Development Kit (MDK-ARM)
• IAR Embedded Workbench
• 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
圖3.LM3S9B96開發板外形圖
圖4.DK-LM3S9B96開發板方框圖
圖5.DK-LM3S9B96開發板電路圖(1)
圖6.DK-LM3S9B96開發板電路圖(2)
圖7.DK-LM3S9B96開發板電路圖(3)
圖8.DK-LM3S9B96開發板電路圖(4)
圖9.DK-LM3S9B96開發板電路圖(5)
圖10.DK-LM3S9B96開發板電路圖(6)
圖11.用于DK-LM3S9B96的FLASH/SRAM/LCD IF擴展板電路圖(1)
圖12.用于DK-LM3S9B96的FLASH/SRAM/LCD IF擴展板電路圖(2)