In-circuit-emulation in ASIC architectural core designs

Software development and system integration in designs with microprocessors and microcontrollers is often accomplished with the aid of an in-circuit-emulator (ICE). Designs incorporating an architectural microcontroller core cell and peripheral cells embedded in an application-specific integrated circuit (ASIC) present additional challenges in software development and system integration. A description is given of the ASIC UCS51 family and a fully functional ICE that supports it. The core and peripheral cells are emulated with multiple ICs, and the user logic is emulated with programmable logic devices. Results of the first customer application and use are included