Atmel SAM4S Xplained Pro Starter and Evaluation Kit ATSAM4S-XPRO ATSAM4S-XPRO Data Sheet
Product codes
ATSAM4S-XPRO
215
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
Note:
1. PRI_n[7:0] field showing the binary point. x denotes a group priority field bit, and y denotes a subpriority field bit.
Determining preemption of an exception uses only the group priority field.
• SYSRESETREQ: System Reset Request
0: No system reset request.
1: Asserts a signal to the outer system that requests a reset.
This is intended to force a large system reset of all major components except for debug. This bit reads as 0.
1: Asserts a signal to the outer system that requests a reset.
This is intended to force a large system reset of all major components except for debug. This bit reads as 0.
• VECTCLRACTIVE: Reserved for Debug use
This bit reads as 0. When writing to the register, write a 0 to this bit, otherwise the behavior is unpredictable.
• VECTRESET: Reserved for Debug use
This bit reads as 0. When writing to the register, write a 0 to this bit, otherwise the behavior is unpredictable.
0b101
bxx.yyyyyy
[7:6]
[5:0]
4
64
0b110
bx.yyyyyyy
[7]
[6:0]
2
128
0b111
b.yyyyyyy
None
[7:0]
1
256
PRIGROUP
Interrupt Priority Level Value, PRI_N[7:0]
Number of
Binary Point
(1)
Group Priority Bits
Subpriority Bits
Group Priorities
Subpriorities