NXP MPC5744P 32位MCU汽车马达应用开发方案

NXP公司的MPC5744P是基于Power Architecture®的Qorivva32位MCU,是SafeAssure解决方案.所有器件都是围绕基于延迟锁定的安全概念,目标于ISO26262 ASIL-D (Design)完整性水平.根据FMEDA分析,MCU关键元件必须要复制的是CPU核和DMA控制器,锁步检查单元在这些区块的每个输出来实现,并和冗余块之间的值进行比较.其它特性还包括可编故障收集和控制单元(FCCU)监视器件整体状态,提供灵活的安全状态控制,端到端误差修正代码(e2eECC)提高故障容差和检测:所有主总线产生单误差修正和双误差检测(SECDED)代码,用于每一个总线交易.SECDED覆盖了64位数据和29位地址.ECC在写操作时存储在存储器,而在每一次读操作中由主机验证.器件的主处理器CPU是Power Architecture核兼容的e200系列,Zen z420n3双核具有非常高的效率(高性能和最小型化功耗)工作在最大频率180MHz或更高.存储器保护单元还包括支持各种指令和数据存储区.器件集成了384KB SRAM和64KB SRAM以及包括了ECC的2.5MB闪存.片外通信有一组协议包括FlexRay, CANs,增强SPIs (DSPIs), SCIs (LINFlexD)以及SIPI (via LFAST)来实现.主要用在故障保护电机控制和永磁同步马达(PMSM).本文介绍了MPC5744P主要特性,系统框图,时钟分布图以及包括MPC5744P马达控制板和3相低压电源板的MTRCKTSPS5744P马达控制开发套件的主要特性与电路图.
The MPC5744P Qorivva microcontroller is based on the Power Architecture® developed by Freescale. It targets chassis and safety applications and other applications requiring a high Automotive Safety Integrity Level (ASIL). The MPC5744P is a SafeAssure solution.All devices in this family are built around a safety concept based on delayed lock step, targeting an ISO26262 ASIL-D (Design) integrity level. According to FMEDA analysis, critical components of the microcontroller that must be replicated are the CPU core and DMA controller. Lock step Checking Units are implemented at each output of these blocks to compare the values between the redundant blocks.In addition, the MPC5744P provides:
•A programmable Fault Collection and Control Unit (FCCU) to monitor the integrity status of the device and provide flexible safe state control.
•End-to-End Error Correcting Code (e2eECC) for impr...