NECS system with PowerPC – PowerNECS
The master module is based on an MPC555 microcontroller operating at 40 MHz clock frequency and provides dual TPU and CAN interfaces, IrDA and two PCMCIA card slots. The bus master module also supports additional hardware, which can interface to the QSPIs (Queued Serial Peripheral Interface) and TPUs (Time Processor Unit) via a utility connector. The power supply module supplies the bus master module as well as all stacked-on modules with 5, 3.3 and +/- 12 VDC, which it derives from an unregulated EN2282 compliant power input. Additionally, it contains a four-character ASCII display for monitoring purposes. The power input lines are protected against polarity reversion, transient over voltage and electromagnetic interference. The PowerNECS runtime support and software library significantly reduce the time required for application software development. To maximize flexibility, application software can be downloaded, debugged and in-situ programmed on each PowerNECS unit via RS-232 using the Gnu gcc/gdb/XXgdb toolset or the eCOS real-time operating system.