TM4C123GH6PM是TI公司推出的一款32位基于ARM Cortex-M4的處理器，主頻80MHz，256kB Flash，32kB SRAM，具有USB Host、Device和OTG等功能。Tiva TM4C123 LaunchPad是基于該處理器的快速入門板卡，自帶USB仿真器，通過USB線連接PC機(jī)即可進(jìn)行開發(fā)。

　　1 Architectural Overview Texas Instrument‘s Tiva? C Series microcontrollers provide designers a high-performance ARM? Cortex?-M-based architecture with a broad set of integration capabilities and a strong ecosystem of software and development tools. Targeting performance and flexibility， the Tiva? C Series architecture offers a 80 MHz Cortex-M with FPU， a variety of integrated memories and multiple programmable GPIO. Tiva? C Series devices offer consumers compelling cost-effective solutions by integrating application-specific peripherals and providing a comprehensive library of software tools which minimize board costs and design-cycle time. Offering quicker time-to-market and cost savings， the Tiva? C Series microcontrollers are the leading choice in high-performance 32-bit applications. This chapter contains an overview of the Tiva? C Series microcontrollers as well as details on the TM4C123GH6PM microcontroller： ■ “Tiva? C Series Overview” on page 45 ■ “TM4C123GH6PM Microcontroller Overview” on page 46 ■ “TM4C123GH6PM Microcontroller Features” on page 49 ■ “TM4C123GH6PM Microcontroller Hardware Details” on page 68 ■ “Kits” on page 68 ■ “Support Information” on page 68