Programmable refresh circuits and methods for integrated circuit

Details Programmable refresh circuits and methods for integrated circuit Programmable refresh circuits and methods for integrated circuit

1996-12-20

1998-09-22

Le, Vu A.

Static information storage and retrieval

Read/write circuit

Data refresh

3652257, G11C 700

Patent

active

058124756

ABSTRACT:
A self refresh circuit for an integrated circuit memory device includes a programmable refresh circuit, a plurality of counters, and a refresh cycle selection circuit. The programmable refresh circuit can be electrically programmed to generate one of a plurality of refresh control signals. A first one of the counters generates a first oscillating output signal having a first predetermined period and each successive counter generates a respective oscillating output signal having a respective period twice that of a respective preceding counter. The refresh cycle selection circuit selects a self refresh cycle from one of the oscillating output signals in response to the refresh control signal generated by the at least one programmable refresh circuit. Related methods are also disclosed.

REFERENCES:
patent: 5243576 (1993-09-01), Ishikawa
patent: 5287319 (1994-02-01), Fukumoto
patent: 5446695 (1995-08-01), Douse et al.

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