Microcontroller integrated circuit with read only memory contain

Details Microcontroller integrated circuit with read only memory contain Microcontroller integrated circuit with read only memory contain

1996-01-30

1996-12-31

Beausoliel, Jr., Robert W.

G06F 1100

Patent

active

055902731

ABSTRACT:
A microcontroller integrated circuit comprises a processor core which exchanges data with at least one data processing and/or storage device. The integrated circuit comprises a mask-programmed read only memory containing a generic program such as a test program which can be executed by the microcontroller. The generic program includes a basic function for writing data into the data processing and/or storage device or devices. The write function is used to load a downloading program. Because a downloading program is not permanently stored in the read only memory, the microcontroller can be tested independently of the application program, and remains standard with regard to the type of memory component with which it can be used in a system.

REFERENCES:
patent: 4435763 (1984-03-01), Bellay et al.
patent: 4490783 (1984-12-01), McDonough et al.
patent: 4641308 (1987-02-01), Sacarisen et al.
patent: 4797808 (1989-01-01), Bellay et al.
patent: 5157781 (1992-10-01), Harwood et al.
patent: 5202978 (1993-04-01), Nozuyama

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