Emerging on-chip debugging techniques for real-time embedded systems

The increased clock frequencies and higher integration levels of today's hi gh-performance embedded microcontrollers have led to the widespread incorpo ration of on-chip debugging logic into new microcontroller chip designs. Th e newly defined standard for embedded system debugging, the IEEE-ISTO Nexus 5001 Forum Standard for a Global Embedded Debug Interface, is introduced a nd is related to the test and debugging requirements of development enginee rs.