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M451
May. 4, 2018
Page
263
of
1006
Rev.2.08
M4
51
S
E
RI
E
S
T
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CH
NICA
L RE
F
E
R
E
NC
E
M
A
NU
A
L
System Control Register (SCR)
Register
Offset
R/W
Description
Reset Value
SCR
0xD10
R/W
System Control Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
7
6
5
4
3
2
1
0
Reserved
SEVONPEND
Reserved
SLEEPDEEP SLEEPONEXIT
Reserved
Bits
Description
[31:5]
Reserved
Reserved.
[4]
SEVONPEND
Send Event on Pending
0 = Only enabled interrupts or events can wake up the processor, while disabled interrupts
are excluded.
1 = Enabled events and all interrupts, including disabled interrupts, can wake up the
processor.
When an event or interrupt enters pending state, the event signal wakes up the processor
from WFE. If the processor is not waiting for an event, the event is registered and affects
the next WFE.
The processor also wakes up on execution of an SEV instruction or an external event.
[3]
Reserved
Reserved.
[2]
SLEEPDEEP
Processor Deep Sleep and Sleep Mode Selection
Control Whether the Processor Uses Sleep Or Deep Sleep as its Low Power Mode.
0 = Sleep.
1 = Deep sleep.
[1]
SLEEPONEXIT
Sleep-on-exit Enable Control
This bit indicate Sleep-On-Exit when Returning from Handler Mode to Thread Mode.
0 = Do not sleep when returning to Thread mode.
1 = Enters sleep, or deep sleep, on return from an ISR to Thread mode.
Setting this bit to 1 enables an interrupt driven application to avoid returning to an empty
main application.
[0]
Reserved
Reserved.
Содержание ARM Cortex NuMicro M451 Series
Страница 301: ...M451 May 4 2018 Page 301 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL...
Страница 324: ...M451 May 4 2018 Page 324 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL Figure 6 4 18 Checksum Calculation Flow...
Страница 355: ...M451 May 4 2018 Page 355 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 2 0 Reserved Reserved...
Страница 625: ...M451 May 4 2018 Page 625 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 00 5 bits 01 6 bits 10 7 bits 11 8 bits...
Страница 721: ...M451 May 4 2018 Page 721 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL the SCL line 1 0 Reserved Reserved...
Страница 1001: ...M451 May 4 2018 Page 1001 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 10x10x1 4 mm footprint 2 0 mm 9 2...
Страница 1002: ...M451 May 4 2018 Page 1002 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 7x7x1 4 mm footprint 2 0 mm 9 3...
Страница 1003: ...M451 May 4 2018 Page 1003 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 48L 7x7x1 4mm footprint 2 0mm 9 4...