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Does DTC activate immediately while CPU executes interrupt handling?

Latest Updated:04/02/2012

Question:

When a DTC activation source is generated while the CPU executes interrupt handling, is the DTC activated immediately, after interrupt handling is completed, or depending on the priority order of interrupt sources?

Answer:

The DTC is activated immediately. The DTC and CPU use the same bus, and the DTC takes priority over the CPU in using the bus. The DTC takes priority regardless of the priority of interrupt sources.
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