Microcontroller device for extending memory address by...

Details Microcontroller device for extending memory address by... Microcontroller device for extending memory address by...

2006-06-06

2006-06-06

Sparks, Donald (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Access timing

C711S002000, C711S102000, C711S104000, C710S057000

Reexamination Certificate

active

07058777

ABSTRACT:
A microcontroller device for extending memory address space by inserting a waiting state and an operation method on the device. The device includes a CPU, a ROM, and a memory interface controller. In the device, the memory interface controller inserts a waiting state into the CPU when address of the information or the program to be fetched by the CPU is not located within a predetermined address range until the information or the program is completely fetched.

REFERENCES:
patent: 5329621 (1994-07-01), Burgess et al.
patent: 5465343 (1995-11-01), Henson et al.
patent: 5668971 (1997-09-01), Neufeld
patent: 6240504 (2001-05-01), Boutaud et al.
patent: 6343353 (2002-01-01), Kim
patent: 2003/0233527 (2003-12-01), Kawasaki et al.

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