Pseudo static mask option register and method therefor

Details Pseudo static mask option register and method therefor Pseudo static mask option register and method therefor

1994-02-14

1996-09-24

Kim, Matthew M.

Boots, shoes, and leggings

364DIG1, 364DIG2, 395869, 365222, 365120, 36518905, G06F 1200

Patent

active

055599818

ABSTRACT:
A pseudo-static mask option register (50) combines features of both a continuous refresh design and a static latched mask option register design. Pseudo-static mask option register (50) removes a mask option function from a main user memory (48) such that the functionality of the mask option register (50) is not limited by a plurality of electrical characteristics of the main use memory (48). When using the pseudo-static mask option register (50), a memory state of each memory bit (64, 66, 68) is read at any time. Additionally, a portion of the memory bits (64, 66, 68) is periodically refreshed such that pseudo-static mask option register (50) maintains an integrity of a value stored therein while minimizing power consumption. Pseudo-static mask option register (50) also has a non-volatile output state to allow emulation of mask options which are vulnerable to electrical disturbances.

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patent: 5307464 (1994-04-01), Akao et al.
patent: 5388065 (1995-02-01), Yoneda

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