ST STM32F4DISCOVERY超低成本开发应用方案

ST公司的STM32F40x 系列是高性能的数字信号控制器（DSC），采用ARM Cortex™-M4F 32位RISC内核，工作频率高达168 MHz，具有210DMIPS性能，工作电压1.7V-3.6V，RTC的超低功耗小于1uA，具有优异的接口，集成了1MB闪存，192KB SRAM，主要用在POS/投资管理，工业自动化和太阳能电池板，交通运输，医疗设备，建筑物，测试仪表，消费类电子和通信等设备。本文介绍了STM32F40x 系列主要特性，方框图，STM32F4DISCOVERY板主要特性，硬件框图和电路图，元件布局图，以及采用STM32F4xx和STM32F4-DISCOVERY板的音频播放和录音模块框图。
The STM32F405xx and STM32F407xx family is based on the high-performance ARM®Cortex™-M4F 32-bit RISC core operating at a frequency of up to 168 MHz. The Cortex-M4F core features a Floating point unit (FPU) single precision which supports all ARM single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.
The STM32F405xx and STM32F407xx family incorporates high-speed embedded memories (Flash memory up to 1 Mbyte, up to 192 Kbytes of SRAM), up to 4 Kbytes of backup SRAM, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.
All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose 16-bit timers including two PWM timers for motor control, two general-purpose 32-bit timers. a true number random generator (RNG). They also feature standard and advanced communication interfaces.
STM32F40x 系列主要特性：
Core: ARM 32-bit Cortex™-M4F CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait state execution from Flash memory, frequency up to 168 MHz, memory protection unit, 210 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions
Memories
Up to 1 Mbyte of Flash memory
Up to 192+4 Kbytes of SRAM including 64-Kbyte of CCM (core coupled memory) data RAM
Flexible static memory controll...