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Hi, My name is bharath i am studying a article on watchdog timers, i am in the middle of the article in that it is given as:: A properly designed watchdog mechanism should, at the very least, catch events that hang the system. In electrically noisy environments, a power glitch may corrupt the program counter, stack pointer, or data in RAM.
I was unable to follow what that power glitch is? and how it is going to corrupt the program counter,stack pointeror data in the RAM..... I have search the internet to know about it but i could not follow it properly.. I will be thankful to you people if you can give me some idea about that.
thanks in advance ..........
Most of todays microcontrollers has a built-in watchdog, and since the cost of using it is noramlly so low,
Actually, if I remember the article correctly, then one of the points the author attempts to make is that any kind of "built-in" watchdog will depend on at least parts of the processor to run correctly, which is something that a "proper" watchdog should never do. Therefore, "built-in" watchdogs do not deserve that name.