Variable frequency clock for an electronic system and method therefor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 9, 2000
Grant Date -
N/A
app pub date -
Nov 15, 1993
filing date -
Nov 15, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An activity sensor monitors a microprocessor based system for a change in a logic state. In response to the change, the activity sensor provides a reset timer pulse to a delay timer circuit. The delay timer is a counter that stores a signal representation of the number of timing pulses provided by a timing clock. In response to the timer reset signal, the delay timer is reset. When the timer reset pulse is not provided for a predetermined interval, the delay timer generates a timeout pulse that causes a reduction in the frequency of a system clock.
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