ST STM32MP157A高性能32位MPU开发方案

ST公司的STM32MP157A是基于高性能双核Arm® Cortex®- A7 32位RISC核MPU,工作频率高达650MHz.Cortex®-A7处理器包括用于每个CPU的32KB L1指令缓存, 用于每个CPU的32KB L1数据缓存和256KB level2缓存.Cortex®-A7处理器是非常能效的应用处理器,在高端可穿戴设备和其它低功耗嵌入和消费应用中提供丰富的性能,比Cortex-A5提供多达20%的单线程性能,比Cortex-A9提供相仿的性能.STM32MP157A还嵌入了运行于高达533MHz的3D图像处理单元(Vivante® - OpenGL® ES 2.0),其性能高达26 Mtriangle/s,133 Mpixel/s.STM32MP157A还提供外接SDRAM接口,支持高达8G比特密度(1GB),16或32位高达533MHz的LPDDR2/LPDDR3或DDR3/DDR3L.所有器件提供两个ADC,两个DAC,一个低功耗RTC,12个通用16位计时器,两个用于马达控制的PWM计时器,一个真正随机号码发生器(RNG).器件支持用于外接sigma delta调制器(DFSDM)的六个数字滤波器,它们具有标准和高档通信接口.主要用在各种消费类,工业类,白色家电和医疗应用.本文介绍了STM32MP157A主要特性,框图,双核Arm® Cortex®-A7子系统主要特性,总线矩阵图和电源方案图,以及STM32MP157 MPU发现工具包STM32MP157C-DK2主要特性,硬件框图,电路图和材料清单.
The STM32MP157A devices are based on the high-performance dual-core Arm® Cortex®- A7 32-bit RISC core operating at up to 650 MHz. The Cortex-A7 processor includes a 32- Kbyte L1 instruction cache for each CPU, a 32-Kbyte L1 data cache for each CPU and a 256-Kbyte level2 cache. The Cortex-A7 processor is a very energy-efficient application processor designed to provide rich performance in high-end wearables, and other low-power embedded and consumer applications. It provides up to 20% more single thread performance than the Cortex-A5 and provides similar performance than the Cortex-A9.
The Cortex-A7 incorporates all features of the high-performance Cortex-A15 and Cortex- A17 processors, including virtualization support in hardware, NEON™, and 128-bit AMBA®4 AXI bus interface.
The STM32MP157A devices also embed a Cortex® -M4 32-bit RISC core operating at up to 209 MHz frequency. Cortex-M4 core features a floating point unit (FPU) single precisi...