Apparatus and method for microcontroller debugging
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United States of America Patent
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Jul 5, 2005
Grant Date -
Feb 20, 2003
app pub date -
Dec 28, 2000
filing date -
Dec 28, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus and method for microcontroller debugging. A preferred embodiment microcontroller integrated circuit comprises debug circuitry on the integrated circuit. The debug circuitry is capable of breaking normal instruction execution based on an address breakpoint, a stack pointer breakpoint, or a single step breakpoint. Upon detection of a valid breakpoint, the debug circuitry substitutes a jump to a debug program instruction in place of the next normal application program instruction. The debug program then may provide microcontroller status to a developer, allowing the developer to debug the application program. Upon completion of the debug program, control of the microcontroller is returned to the application program at the point of interruption.
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