ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 183

• 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

13.20.4
• PENDSVSET
RW
PendSV set-pending bit.
Write:
0 = no effect
1 = changes PendSV exception state to pending.
Read:
0 = PendSV exception is not pending
1 = PendSV exception is pending.
Writing 1 to this bit is the only way to set the PendSV exception state to pending.
• PENDSVCLR
WO
PendSV clear-pending bit.
Write:
0 = no effect
1 = removes the pending state from the PendSV exception.
6430D–ATARM–25-Mar-11
Reserved for
Reserved
Debug
31
23
15
7
Interrupt Control and State Register
ISRPENDING
30
22
14
6
VECTPENDING
Reserved
The ICSR:
See the register summary in
on page
• provides:
• indicates:
– set-pending and clear-pending bits for the PendSV and SysTick exceptions
– the exception number of the exception being processed
– whether there are preempted active exceptions
– the exception number of the highest priority pending exception
– whether any interrupts are pending.
207, for the ICSR attributes. The bit assignments are:
29
21
13
5
PENDSVSET
28
20
12
4
VECTACTIVE
Table 13-30 on page
PENDSVCLR
RETTOBASE
27
19
11
3
VECTPENDING
180, and the Type descriptions in
PENDSTSET
26
18
10
2
Reserved
PENDSTCLR
SAM3U Series
25
17
9
1
VECTACTIVE
Table 13-33
Reserved
24
16
8
0
183