1、TI Stellaris LM4F232 32位MCU開發(fā)方案關(guān)鍵字：工業(yè)控制,運(yùn)動(dòng)控制,馬達(dá)控制,儀器儀表,工廠自動(dòng)化;醫(yī)療電子;消費(fèi)類電子,手持設(shè)備,游戲機(jī)TI公司的Stellaris LM4F232H5QD是基于ARM Cortex-M4F處理器核的32位MCU,工作頻率80MHz,集成了系統(tǒng)定時(shí)器(SysTick),嵌套的向量中斷控制器(NVIC),帶時(shí)鐘門的叫醒中斷控制器(WIC),存儲(chǔ)器保護(hù)單元(MPU), IEEE754兼容的單精度浮點(diǎn)單元(FPU)等,用于外設(shè)的8/16/32位專用并行總線,支持SDRAM,SRAM/閃存,FPGA和CPLD,主要用在低功耗手持智能設(shè)備,游戲機(jī),

2、家庭和商用定點(diǎn)監(jiān)視和控制,運(yùn)動(dòng)控制,醫(yī)療儀器,測試測量設(shè)備,工廠自動(dòng)化,防火和安全系統(tǒng),智能電網(wǎng),智能照明控制和交通.本文介紹了LM4F232H5QD MCU主要特性和方框圖, 評估板EK-LM4F232主要特性和方框圖,電路圖,材料清單和PCB元件布局圖.Texas Instruments is the industry leader in bringing 32-bit capabilities and the full benefits of ARM? Cortex-M-based microcontrollers to the broadest reach of the microco

3、ntroller market. For current users of 8- and 16-bit MCUs, Stellaris?with Cortex-M offers a direct path to the strongest ecosystem of development tools, software and knowledge in the industry. Designers who migrate to Stellaris benefit from great tools, small code footprint and outstanding performanc

4、e. Even more important, designers can enter the ARM ecosystem with full confidence in a compatible roadmap from $1 to 1 GHz. With blazingly-fast responsiveness, Thumb-2 technology combines both 16-bit and 32-bit instructions to deliver the best balance of code density and performance. Thumb-2 uses 2

5、6 percent less memory than pure 32-bit code to reduce system cost while delivering 25 percent better performance. The Texas Instruments Stellaris family of microcontrollers brings high-performance 32-bit computing to cost-sensitive embedded microcontroller applications.The Stellaris LM4F series of A

6、RM Cortex-M4 microcontrollers provides top performance and advanced integration. The product family is positioned for cost-conscious applications requiring significant control processing and connectivity capabilities such as: Low power, hand-held smart devices Gaming equipment Home and commercial si

7、te monitoring and control Motion control Medical instrumentation Test and measurement equipment Factory automation Fire and security Smart Energy/Smart Grid solutions Intelligent lighting control Transportation圖1. Stellaris LM4F232方框圖圖2.Stellaris LM4F232H5QD MCU詳細(xì)方框圖Stellaris LM4F232H5QD MCU主要特性:Ste

8、llaris LM4F232評估板EK-LM4F232The Stellaris LM4F232 Evaluation Board (EK-LM4F232) is an evaluation platform for the Stellaris LM4F232H5QD ARM Cortex-M4F-based microcontroller. The evaluation boards design highlights the LM4F232H5QD microcontrollers USB 2.0 On-The-Go/Host/Device (USB OTG/Host/Device) in

9、terface, 12-bit Analog-to-Digital Converter (ADC), Real-Time Clock (RTC), and battery-backed Hibernation module.圖3.評估板EK-LM4F232外形圖評估板EK-LM4F232包括:The EK-LM4F232 evaluation kit comes with the following: Stellaris EK-LM4F232 evaluation board On-board Stellaris In-Circuit Debug Interface (ICDI) Cables

10、 USB Mini-B to USB-A plug cable (for debug) USB Micro-A plug to USB-A receptacle cable USB Micro-B plug to USB-A plug cable USB Flash drive 3 V CR2032 lithium coin cell battery CD containing: StellarisWare Peripheral Driver Library and example source code Stellaris Firmware Development Package with

11、example source code Quickstart application with source code Windows companion application for quickstart application Complete documentation A supported version of one of the following: Keil RealView Microcontroller Development Kit (MDK-ARM) IAR Embedded Workbench development tools Sourcery CodeBench

12、 development tools Code Red Technologies development tools Texas Instruments Code Composer Studio IDEThe EK-LM4F232 evaluation kit includes the following features: Stellaris LM4F232H5QD microcontroller Data logger demo application 6 screw terminals 4 analog inputs (0-20 V) Power Ground 3-axis analog

13、 accelerometer 2 Analog temperature sensors External TMP20 temperature sensor Internal microcontroller temperature sensor Microcontroller current shunt amplifier 96 x 64 color OLED display USB Micro-AB connector for Host/Device/OTG microSD card slot 5 user/navigation switches User LED Precision 3.0

14、V reference Available I/O brought out to headers on 0.1 grid Debug Stellaris In-Circuit Debug Interface (ICDI) Standard 10-pin JTAG header Shunt resistors to measure current on VBAT and VDD Coin cell backup battery for Hibernate mode Reset button圖4.評估板EK-LM4F232方框圖圖5.評估板EK-LM4F232方框圖(1)圖6.評估板EK-LM4F232方