Intermediate
Embedded Systems & IoT
Q77 / 100
What is the purpose of an "external watchdog" IC, separate from a microcontroller's built-in watchdog timer?
Correct! Well done.
Incorrect.
The correct answer is A) It provides an independent hardware-based reset mechanism that can recover the system even if the microcontroller itself becomes completely unresponsive or its internal watchdog logic fails
A
Correct Answer
It provides an independent hardware-based reset mechanism that can recover the system even if the microcontroller itself becomes completely unresponsive or its internal watchdog logic fails
Explanation
A built-in watchdog depends on the same chip that might be malfunctioning; an external watchdog IC operates independently, providing an extra layer of resilience by resetting the system if it doesn't receive a periodic "heartbeat" signal.
Progress
77/100