AT91M40400 View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT91M40400' PDF : 116 Pages View PDF
Reset Status Register
Register Name:
Access Type:
SF_RSR
Read only
31
30
29
28
27
26
25
24
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23
22
21
20
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16
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15
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11
10
9
8
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7
6
5
4
3
2
1
0
RESET
• RESET: Reset Status Information
This field indicates whether the reset was demanded by the external system (via NRST) or by the Watchdog internal
reset request.
Reset
0x6C
0x53
Cause of Reset
External Pin
Internal Watchdog
SF Protect Mode Register
Register Name:
Access Type:
Reset Value:
SF_PMR
Read/Write
0
31
30
29
28
27
26
25
24
PMRKEY
23
22
21
20
19
18
17
16
PMRKEY
15
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11
10
9
8
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7
6
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3
2
1
0
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AIC
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• PMRKEY: Protect Mode Register Key
Used only when writing SF_PMR. PMRKEY is reads 0.
0x27A8: Write access in SF_PMR is allowed.
Other value: Write access in SF_PMR is prohibited.
• AIC: AIC Protect Mode Enable
0 = The Advanced Interrupt Controller runs in Normal Mode.
1 = The Advanced Interrupt Controller runs in Protect Mode.
See Protect Mode on page 37.
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AT91M40400
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