G - Physics – 06 – F
Patent
G - Physics
06
F
354/231
G06F 1/04 (2006.01) A61N 1/372 (2006.01) G06F 1/08 (2006.01) G06F 1/10 (2006.01)
Patent
CA 1196423
Synchronous Clock Stopper For Microprocessor Abstract A synchronous clock stopper circuit for inhibiting clock pulses to a microprocessor in response to a stop request signal, and for reinstating the clock pulses in response to a start request signal thereby to conserve power consumption of the micro- processor when used in an environment of limited power. The stopping and starting of the microprocessor is synchronized, by a phase tracker, with the occurrences of a predetermined phase in the instruction cycle of the microprocessor in which the I/O data and address lines of the microprocessor are of high impedance so that a shared memory connected to the I/O lines may be accessed by other peripheral devices. The starting and stopping occur when the microprocessor initiates and completes, respectively, an instruction, as well as before and after transferring data with a memory. Also, the phase tracker transmits phase information signals over a bus to other peripheral devices which signals identify the current operational phase of the microprocessor.
437871
Intec Systems Inc.
Stewart & Kolash Ltd
The Johns Hopkins University
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