The Ceibo FE-C450 is a development tool that supports Dallas Semiconductors' DS89C450/40/30/20 microcontrollers at any frequency allowed by the devices.
It is serially- or USB-linked to a PC and can emulate the microcontrollers using any clock. Emulation is carried out by loading the system with the user software and an embedded monitor program.
FE-C450 locates the monitor in the upper 4K of the code memory space, together with the ISP routines. The system uses standard devices for realtime and transparent emulation. The emulator is not frequency- or voltage-restricted, so it can be used to emulate the microcontroller in the complete range of parameters defined by the device.
Three working modes are available: realtime, in-circuit simulation and simulator. In the realtime mode the user software is executed transparently and without interfering with the microcontroller speed. Breakpoints can be added to stop program execution at a specific address. The in-circuit simulation is used to provide a trace function by slowing down the emulation speed; instructions are executed by the simulator, except the peripheral related instructions. The simulation is intended only for software debugging of the basic 8051 functions. FE-C450 may be disconnected while using the simulation mode.
The software includes 64 K C Compiler and Assembler, Source Level Debugger, On-line Assembler and Disassembler, 8K C++ Compiler. The system is supplied with Windows debugger software, RS-232 cable, power supply, mechanical adapters and other accessories.
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