Programmable ring oscillator

Details Programmable ring oscillator Programmable ring oscillator

1983-07-01

1985-05-14

Grimm, Siegfried H.

Oscillators

Ring oscillators

331108C, 331179, 331DIG3, H03K 303

Patent

active

045175322

ABSTRACT:
This relates to a programmable ring oscillator which comprises a plurality of series coupled gates the output of the last of which is fed back to the input of the first. Bypass means are coupled across the outputs of selected gates so as to in effect increase or decrease the length of the string. In one embodiment, laser trimmable fuses are employed in the bypass networks. In a second embodiment, a data selector under external control is employed.

REFERENCES:
patent: 4079338 (1978-03-01), Kronlage
patent: 4105950 (1978-08-01), Dingwall
patent: 4388536 (1983-06-01), Peil et al.
patent: 4392105 (1983-07-01), McLeod

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