LM3S101-CRN20-XNPP ETC1 [List of Unclassifed Manufacturers], LM3S101-CRN20-XNPP Datasheet - Page 160
LM3S101-CRN20-XNPP
Manufacturer Part Number
LM3S101-CRN20-XNPP
Description
Microcontroller
Manufacturer
ETC1 [List of Unclassifed Manufacturers]
Datasheet
1.LM3S101-CRN20-XNPP.pdf
(284 pages)
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10
10.1
Figure 10-1.
March 22, 2006
Watchdog Timer
A watchdog timer can generate nonmaskable interrupts (NMIs) or a reset when a time-out value is
reached. The watchdog timer is used to regain control when a system has failed due to a software
error or to the failure of an external device to respond in the expected way.
The LM3S101 controller Watchdog Timer module consists of a 32-bit down counter, a
programmable load register, interrupt generation logic, and a locking register.
The Watchdog Timer can be configured to generate an interrupt to the controller on its first time-
out, and to generate a reset signal on its second time-out. Once the Watchdog Timer has been
configured, the lock register can be written to prevent the timer configuration from being
inadvertently altered.
Block Diagram
System Clock
Interrupt
Watchdog Timer Block Diagram
Control / Clock /
Generation
WDTLOCK
WDTCTL
Interrupt
WDTICR
WDTMIS
WDTRIS
WDTPCellID0
WDTPCellID1
WDTPCellID2
WDTPCellID3
Prime Cell
Preliminary
WDT PeriphID4
WDTPeriphID0
WDTPeriphID1
WDTPeriphID2
WDTPeriphID3
WDTPeriphID5
WDTPeriphID6
WDTPeriphID7
Peripheral ID
0x00000000
32-bit Down
Comparator
WDTLOAD
Counter
LM3S101 Data Sheet
WDTVALUE
160
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