AT91M40400-25C ATMEL Corporation, AT91M40400-25C Datasheet - Page 107

• Manufacturer Part Number: AT91M40400-25C
• Description: 16/32-bit Microcontroller, 2.7V to 3.6V Operating Range
• Manufacturer: ATMEL Corporation

WD Overflow Mode Register
Name:
Access:
Reset Value:
•
•
•
•
•
WDEN: Watch Dog Enable
0 = Watch Dog is disabled and does not generate any signals.
1 = Watch Dog is enabled and generates enabled signals.
RSTEN: Reset Enable
0 = Generation of an internal reset by the Watch Dog is disabled.
1 = When overflow occurs, the Watch Dog generates an internal reset.
IRQEN: Interrupt Enable
0 = Generation of an interrupt by the Watch Dog is disabled.
1 = When overflow occurs, the Watch Dog generates an interrupt.
EXTEN: External Signal Enable
0 = Generation of a pulse on the pin NWDOVF by the Watch Dog is disabled.
1 = When an overflow occurs, a pulse on the pin NWDOVF is generated.
OKEY: Overflow Access Key
Used only when writing WD_OMR. OKEY is read as 0.
0x234 = Write access in WD_OMR is allowed.
Other value = Write access in WD_OMR is prohibited.
31
23
15
---
---
7
30
22
14
WD_OMR
Read/Write
0
---
---
6
OKEY
29
21
13
---
---
5
28
20
12
---
---
4
OKEY
EXTEN
27
19
11
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---
3
IRQEN
26
18
10
---
---
2
AT91M40400
RSTEN
25
17
---
---
9
1
WDEN
24
16
---
---
8
0
107