Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet

SAM4E [DATASHEET]

Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14

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Faults are a subset of the exceptions, see 

. The following generate a fault:



A bus error on:

̶

An instruction fetch or vector table load

̶

A data access



An internally-detected error such as an undefined instruction 



An attempt to execute an instruction from a memory region marked as Non-Executable (XN)

.



A privilege violation or an attempt to access an unmanaged region causing an MPU fault.

 shows the types of fault, the handler used for the fault, the corresponding fault status register, and the

register bit that indicates that the fault has occurred. See 

 for more information

about the fault status registers.

Notes:

1. Occurs on an access to an XN region even if the processor does not include an MPU or the MPU is disabled.

2. Attempt to use an instruction set other than the Thumb instruction set, or return to a non load/store-multiple instruction with 

ICI continuation.

Bus error on a vector read

Hard fault

VECTTBL

Fault escalated to a hard fault

FORCED

MPU or default memory map mismatch:

Memory 
management 
fault

–

–

on instruction access

IACCVIOL

on data access

DACCVIOL

during exception stacking

MSTKERR

during exception unstacking

MUNSKERR

during lazy floating-point state preservation

MLSPERR

Bus error:

Bus fault 

–

–

during exception stacking

STKERR

during exception unstacking

UNSTKERR

during instruction prefetch

IBUSERR

during lazy floating-point state preservation

LSPERR

Precise data bus error

PRECISERR

Imprecise data bus error

IMPRECISERR

Attempt to access a coprocessor

Usage fault

NOCP

Undefined instruction

UNDEFINSTR

Attempt to enter an invalid instruction set state

INVSTATE

Invalid EXC_RETURN value

INVPC

Illegal unaligned load or store

UNALIGNED

Divide By 0

DIVBYZERO