Debug Support (Dbg); Overview; Figure 442. Block Diagram Of Stm32 Mcu And Cortex - ST STM32F446 Series Reference Manual

Debug support (DBG)

33 Debug support (DBG)
33.1

Overview

The STM32F446xx are built around a Cortex
extensions for advanced debugging features. The debug extensions allow the core to be
stopped either on a given instruction fetch (breakpoint) or data access (watchpoint). When
stopped, the core's internal state and the system's external state may be examined. Once
examination is complete, the core and the system may be restored and program execution
resumed.
The debug features are used by the debugger host when connecting to and debugging the
STM32F446xx MCUs.
Two interfaces for debug are available:
•
Serial wire
•
JTAG debug port

Figure 442. Block diagram of STM32 MCU and Cortex

Note: The debug features embedded in the Cortex
CoreSight Design Kit.
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®
-M4 with FPU core containing hardware
support
®
-M4 with FPU core are a subset of the Arm
RM0390 Rev 4
®
-M4 with FPU-level debug
RM0390
®