Microcomputer having function of measuring maximum interrupt-dis

Details Microcomputer having function of measuring maximum interrupt-dis Microcomputer having function of measuring maximum interrupt-dis

1996-10-28

1998-04-14

Ray, Gopal C.

395735, 395869, G06F 946, G06F 1314

Patent

active

057404518

ABSTRACT:
A microcomputer comprises a timer controller for detecting a time when a disabled state in which interrupts are disabled starts and a time when the disabled state ends, a count timer which starts a counting operation when the timer controller detects a time when the disabled state starts, for measuring a period of time during which interrupts are disabled, and a comparator which receives a current count value of the count timer when the disabled state ends, and, when determining that the current count value is larger than a maximum of count values previously received which is stored in a register for storing a maximum of interrupt-disabled time periods, stores the current count value in the register.

REFERENCES:
patent: 4099255 (1978-07-01), Stanley et al.
patent: 5146598 (1992-09-01), Takezawa
patent: 5539729 (1996-07-01), Bodnar
patent: 5542076 (1996-07-01), Benson et al.
patent: 5588125 (1996-12-01), Bennett

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