Freescale MM912－S812小型摩托车引擎ECU参考设计

Freescale公司的MM912_S812是S12XS MCU和多功能点火和喷油器驱动系统,SiP集成了MCU(S12XS)和模拟控制芯片(MC33812),专门设计用于摩托车和其它单/双缸小引擎控制应用.工作范围4.7 V ≤ VPWR ≤ 36 V,继电器/点火/油泵驱动器电流4A,灯驱动电流1.5A, ISO-9141 K线收发器用于通信诊断信息.本文介绍了MM912_S812主要特性, MC9S12XS系列框图和33812简化内部框图, MM912_S812详细应用框图以及小型引擎参考设计KIT912S812ECUEVM主要特性和系统建立图, 小型摩托车引擎控制系统框图, 参考设计板KIT912S812ECUEVM系统框图,电路图,材料清单和PCB元件布局图.

The MM912_S812 is an engine control IC combining an MCU (S12XS) and analog control die (MC33812) intended for motorcycle and other single/dual cylinders small engine control applications. The MCU S12XS has 8.0 KB or 12 KB RAM, and flash memory size of 128 KB or 256 KB. The S12XS family retains many of the features of the S12XE family including error correction code (ECC) on flash memory, a separate data-flash module for code or data storage, a frequency modulated locked loop (IPLL) that improves the EMC performance and a fast ATD converter.

MM912_S812主要特性:

•Designed to operate over the range of ~4.7 V ≤ VPWR ≤ 36 V
•Relay/injector/fuel pump driver – current limit – 4.0 A, typical
•Lamp driver – current limit – 1.5 A, typical..

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