2.3.3. Exception handlers

The processor handles exceptions using:

Interrupt Service Routines (ISRs)

Interrupts IRQ0 to IRQ239 is the maximum range of exceptions that can be handled by ISRs. The actual number of exceptions available is implementation defined.

Fault handlers

HardFault, MemManage fault, UsageFault, and BusFault are fault exceptions handled by the fault handlers.

System handlers

NMI, PendSV, SVCall SysTick, and the fault exceptions are all system exceptions that are handled by system handlers.

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