A debugging system includes a CPU that is a debugging target and a debugging circuit. The CPU has an output part configured to independently output stack access information of a stack access and data access information of a data access excluding the stack access, as data access information of the CPU that is monitored by the debugging circuit. The debugging circuit has a trace part configured to independently generate and output trace information of the stack access from the stack access information that is output from the CPU and trace information of the data access excluding the stack access from the data access information that is output from the CPU.