Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD データシート
製品コード
AT32UC3A3-XPLD
77
32072H–AVR32–10/2012
AT32UC3A3
7.6.19
Reset Cause Register
Name: RCAUSE
Access Type:
Read-only
Offset:
0x140
Reset Value:
0x00000000
• BOD33: Brown-out 3V3 Reset
The CPU was reset due to the supply voltage 3V3 being lower than the brown-out threshold level.
• OCDRST: OCD Reset
The CPU was reset because the RES strobe in the OCD Development Control register has been written to one.
• CPUERR: CPU Error
The CPU was reset because it had detected an illegal access.
• JTAG: JTAG reset
The CPU was reset by setting the bit RC_CPU in the JTAG reset register.
• WDT: Watchdog Reset
The CPU was reset because of a watchdog timeout.
• EXT: External Reset Pin
The CPU was reset due to the RESET pin being asserted.
• BOD: Brown-out Reset
The CPU was reset due to the supply voltage 1V8 being lower than the brown-out threshold level.
• POR Power-on Reset
The CPU was reset due to the supply voltage being lower than the power-on threshold level.
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
-
-
BOD33
-
OCDRST
7
6
5
4
3
2
1
0
CPUERR
-
-
JTAG
WDT
EXT
BOD
POR