SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 186
SAM3X8E
Manufacturer Part Number
SAM3X8E
Description
Manufacturer
Atmel Corporation
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When this bit is set to 1, the PC value stacked for the exception return points to the instruction that attempted the illegal use
of the EPSR.
This bit is not set to 1 if an undefined instruction uses the EPSR.
• UNDEFINSTR
Undefined instruction usage fault:
0: no undefined instruction usage fault
1: the processor has attempted to execute an undefined instruction.
When this bit is set to 1, the PC value stacked for the exception return points to the undefined instruction.
An undefined instruction is an instruction that the processor cannot decode.
The UFSR bits are sticky. This means as one or more fault occurs, the associated bits are set to 1. A bit that is set to 1 is
cleared to 0 only by writing 1 to that bit, or by a reset.
186
186
SAM3X/A
SAM3X/A
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
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