The ARM Cortex-M4 processor is the latest embedded processor by ARM specifically developed to address digital signal control markets that demand an efficient, easy-to-use blend of control and signal processing capabilities in microcontroller applications. The combination of high-efficiency signal processing functionality with the low-power, low cost and ease-of-use benefits of the Cortex-M family of processors is designed to satisfy the emerging category of flexible solutions specifically targeting the motor control, automotive, power management, embedded audio and industrial automation markets. The Cortex-M4 processor extends the use of Cortex-M cores to applications that require more computational performance than available currently with Cortex-M3. The Cortex-M4 features a single-cycle multiply-accumulate (MAC) unit, optimized single instruction multiple data (SIMD) instructions, saturating arithmetic instructions and an optional single precision Floating-Point Unit (FPU). So, the Cortex-M4 is a Cortex-M3 with the DSP instruction add-ons, and migrating from Cortex-M3 to Cortex-M4 is very easy!

每个开发开发M3的必备资料，包含中文固件库、Cortex-M3 权威指南 中文参考手册。

STM32F103VET6 管脚图 红芯电子2.4寸TFT液晶板原理图.pdf 红芯电子STM32_V2开发板原理图.pdf 野火Wildfire-M3-V3-SCH.pdf 红芯电子 野火开发板 开发板硬件原理图

ARM Cortex M3 与 Cortex M4权威指南，英文原版第三版

1、适配的达梦数据库版本号：DM Database Server 64 V8； 2、activiti流程引擎版本号：7.1.0.M3.1; 3、已经对该流程引擎的activiti-engine-7.1.0.M3.1.jar进行了源码修改，下载直接使用即可，同时支持达梦数据库服务器多个数据库实例的场景，网上大多修改的方法只适合单个数据库实例(多个数据库实例下流程引擎的数据表不会再生成)；

根据手册自画的时钟框架图

这是一个很不错的资料，浅显易懂，便于初学者学习和查阅。

此文档为ARM Cortext-M3 指令集介绍及应用的中文版本。

STM32F系列将在18周后… EMI Nand Flash Nor Flash SRAM SDIO I2S 2-PWM …

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