Ring oscillator having a variable oscillating frequency

Oscillators – Ring oscillators

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331 65, 365222, 365227, H03B 100, G11C 700

Patent

active

054102782

ABSTRACT:
A ring oscillator includes a plurality of inverters, a leakage current generating part, and a current controlling part. The current controlling part supplies the inverters with a source current in accordance with a value of a leakage current generated from the leakage current generating part. The leakage current generated from the leakage current generating part is correlated with a leakage current generated from a memory cell. The oscillating frequency of the ring oscillator can be varied in accordance with the leakage current generated from the leakage current generating part.

REFERENCES:
patent: 4388537 (1983-06-01), Kanuma
patent: 4682306 (1987-07-01), Sakurai et al.
patent: 4853654 (1989-08-01), Sakurai
"Master Storage Cell to Initiate Refreshing of Dynamic Memory Chip", by R. E. Johnson & W. F. Stinson, vol. 20, No. 11A, Apr. 1978, IBM Tech. Disc. Bulletin.

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