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US 6,675,301 B1Granted
Microcomputer malfunction preventive apparatus and microcomputer malfunction preventive method
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorHitoshi Kurosawa
Life of this patent
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Abstract
A microcomputer malfunction preventive apparatus that halts supplying of a clock signal to a microcomputer when fluctuations in a supply voltage deviate from an acceptable range, and resumes supplying of the clock signal to the microcomputer when the fluctuations return to the acceptable range.
Claims11
A microcomputer malfunction prevention apparatus comprising:
- a fluctuation detector for detecting rate of change of a supply voltage;
- and
- a clock controller for halting supplying of a clock signal having a first frequency to a microcomputer when the rate of change detected by said fluctuation detector deviates from an acceptable rate of change range, and for resuming supplying of the clock signal to the microcomputer when the rate of change returns to the acceptable rate of change range.
A microcomputer malfunction prevention method comprising:
- monitoring rate of change of a supply voltage;
- halting supplying of a clock signal having a first frequency to a microcomputer when the rate of change of the supply voltage deviates from an acceptable rate of change range;
- and
- resuming supplying of the clock signal to the microcomputer when the rate of change returns to the acceptable range.
1 more element
Dependencies are inferred from the claim text.