Nonvolatile memory with a programmable configuration cell and a

Details Nonvolatile memory with a programmable configuration cell and a Nonvolatile memory with a programmable configuration cell and a

1995-08-22

1996-11-05

Chan, Eddie P.

Electronic digital logic circuitry

Multifunctional or programmable

Array

395430, 39518306, 395429, 326 38, 364DIG1, 3642446, 3642449, 3642591, G06F 1200

Patent

active

055727077

ABSTRACT:
A nonvolatile memory includes a memory array, control circuitry coupled to the memory array for controlling memory operations with respect to the memory array, and a configuration cell coupled to the control circuitry for generating a configuration signal to configure the nonvolatile memory with respect to the memory operations. The configuration cell can be programmed in a first state and a second state. A configuration logic is coupled to the configuration cell and the control circuitry for altering the configuration signal from the configuration cell to the control circuitry without causing the configuration cell to be reprogrammed. The configuration logic includes an exclusive or gate that temporarily alters the configuration signal without affecting a programmed state of the configuration cell. The configuration logic can also disable the configuration signal to the control circuitry and configure the nonvolatile memory with a temporary configuration information stored in a configuration register of the configuration logic.

REFERENCES:
patent: 4752871 (1988-06-01), Sparks et al.
patent: 4940909 (1990-07-01), Mulder et al.
patent: 5099453 (1992-03-01), Steele
patent: 5361373 (1994-11-01), Gilson

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