ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 87

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13.6.1
13.6.2
6430D–ATARM–25-Mar-11
Fault types
Fault escalation and hard faults
Table 13-11
tus register, and the register bit that indicates that the fault has occurred. See
Fault Status Register” on page 197
Table 13-11. Faults
1.
2.
All faults exceptions except for hard fault have configurable exception priority, see
dler Priority Registers” on page
faults, see
Fault
Bus error on a vector read
Fault escalated to a hard fault
MPU mismatch:
Bus error:
Precise data bus error
Imprecise data bus error
Attempt to access a coprocessor
Undefined instruction
Attempt to enter an invalid instruction
set state
Invalid EXC_RETURN value
Illegal unaligned load or store
Divide By 0
• an internally-detected error such as an undefined instruction or an attempt to change state
• attempting to execute an instruction from a memory region marked as Non-Executable
• an MPU fault because of a privilege violation or an attempt to access an unmanaged region.
with a BX instruction
on instruction access
on data access
during exception stacking
during exception unstacking
during exception stacking
during exception unstacking
during instruction prefetch
Occurs on an access to an XN region even if the MPU is disabled.
Attempting to use an instruction set other than the Thumb instruction set.
(2)
“System Handler Control and State Register” on page
shows the types of fault, the handler used for the fault, the corresponding fault sta-
192. Software can disable execution of the handlers for these
for more information about the fault status registers.
Handler
Hard fault
Memory
managem
ent fault
Bus fault
Usage
fault
Bit name
VECTTBL
FORCED
-
IACCVIOL
DACCVIOL
MSTKERR
MUNSKERR
-
STKERR
UNSTKERR
IBUSERR
PRECISERR
IMPRECISER
R
NOCP
UNDEFINSTR
INVSTATE
INVPC
UNALIGNED
DIVBYZERO
(1)
195.
SAM3U Series
Fault status register
“Hard Fault Status
Register” on page 203
-
“Memory Management
Fault Address Register” on
page 204
-
“Bus Fault Status Register”
on page 199
“Usage Fault Status
Register” on page 201
“Configurable
“System Han-
(XN).
87