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What is a Smart Reset™ and what is it used for?

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What is a Smart Reset™ and what is it used for?

Smart Reset™ devices provide a useful feature that ensures inadvertent short reset push-

button closures do not cause system resets. This is done by implementing extended Smart

safe reset and eliminate the need for a specific dedicated reset button.

Such reset configuration provides versatility and allows the application to distinguish

between a software generated interrupt and a hard system reset. When input push-buttons

are connected to microcontroller interrupt inputs, and are closed for a short time, the

processor can only be interrupted. If the system still does not respond properly, keeping the

processor through the reset output.

More details

•

See AN3261: Dual push-button Smart Reset™ devices with user-adjustable setup

delays

•

See e-presentation: Smart reset ICs for the STM6519 and STM6524

•

See the STM65xx flyer: Smart resets eliminate dedicated reset buttons and prevent

accidental resets

Suggested products

For further information on Smart Reset™ devices, please refer to the following products:

STM6503, STM6504, STM6505, STM6510, STM6513, STM6519, STM6520, STM6522,

and STM6524.

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With Smart Reset™ devices, is the reset asserted

repeatedly if a push-button is pressed for a long

time?

reset pulse is sent to the system if the push-button(s) is (are) pressed and held. The push-

The push-button(s) need(s) to be released to de-assert the reset output.