Background debug mode interface: Difference between revisions

Revision as of 08:23, 12 January 2008

Revision as of 17:35, 12 January 2008

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At the start of the next bit time, the host negates the transmission line, and the process repeats. Each bit is communicated in this manner.

==Microcontroller application development==

Regarding microcontroller application development, aA good development tool environment is important to reduce total development time and cost. Users want to debug their application program under conditions that imitate the actual setup of their system. Because of that, the capability to debug a user program in an actual target system is required. This is known as in-circuit debugging. Furthermore, most new MCUs have nonvolatile memory such as Flash so that programming code on the target system is also required. This is known as in-circuit programming

To support in-circuit debugging and programming requirements, the HC08 Family has the monitor mode and the HCS08 and RS08 utilize a background debug mode (BDM). The background debug hardware on the HCS08 consists of a background debug controller (BDC) and debug module (DBG). The background debug hardware on the RS08 consists of the background debug controller (BDC) only.