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AT91SAM7X256 Datasheet(PDF) 67 Page - ATMEL Corporation

No. de Pieza. AT91SAM7X256
Descripción  AT91 ARM Thumb-based Microcontrollers
Descarga  664 Pages
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Fabricante  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
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AT91SAM7X256 Datasheet(HTML) 67 Page - ATMEL Corporation

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67
6120D–ATARM–02-Feb-06
AT91SAM7X256/128 Preliminary
14.4.2
Reset Controller Status Register
Register Name:
RSTC_SR
Access Type:
Read-only
• URSTS: User Reset Status
0 = No high-to-low edge on NRST happened since the last read of RSTC_SR.
1 = At least one high-to-low transition of NRST has been detected since the last read of RSTC_SR.
• BODSTS: Brownout Detection Status
0 = No brownout high-to-low transition happened since the last read of RSTC_SR.
1 = A brownout high-to-low transition has been detected since the last read of RSTC_SR.
• RSTTYP: Reset Type
Reports the cause of the last processor reset. Reading this RSTC_SR does not reset this field.
• NRSTL: NRST Pin Level
Registers the NRST Pin Level at Master Clock (MCK).
• SRCMP: Software Reset Command in Progress
0 = No software command is being performed by the reset controller. The reset controller is ready for a software command.
1 = A software reset command is being performed by the reset controller. The reset controller is busy.
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––––––––
23
22
21
20
19
18
17
16
––––––
SRCMP
NRSTL
15
14
13
12
11
10
9
8
–––––
RSTTYP
76543210
––––––
BODSTS
URSTS
RSTTYP
Reset Type
Comments
0
0
0
Power-up Reset
VDDCORE rising
0
1
0
Watchdog Reset
Watchdog fault occurred
0
1
1
Software Reset
Processor reset required by the software
1
0
0
User Reset
NRST pin detected low
1
0
1
Brownout Reset
BrownOut reset occurred


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