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AT91SAM9G20 bảng dữ liệu(PDF) 98 Page - ATMEL Corporation

tên linh kiện AT91SAM9G20
Giải thích chi tiết về linh kiện  AT91 ARM Thumb Microcontrollers
PDF  832 Pages
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91SAM9G20 bảng dữ liệu(HTML) 98 Page - ATMEL Corporation

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98
6384D–ATARM–04-May-09
AT91SAM9G20 Preliminary
14.4.2
Reset Controller Status 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.
• 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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––––––
SRCMP
NRSTL
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–––––
RSTTYP
76543210
–––––––
URSTS
RSTTYP
Reset Type
Comments
0
0
0
General Reset
Both VDDCORE and VDDBU rising
0
0
1
Wake 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



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