Operation

STM6315

8/21

2.4

circuit. In most systems this is not a problem, as most MCUs do not operate below 1V.

However, in applications where RST output must be valid down to 0V, a pull-down resistor

may be added to hold the RST output low. This resistor must be large enough to not load

the RST output, and still be small enough to pull the output to Ground. A 100K

Ω resistor is

recommended.

Figure 5.

Reset timing diagram

Figure 6.

Manual reset timing diagram, switch bounce/debounce

AI11166

RST

VCC

VRST

VCC (min)

trec

AI11167b

RST

MR

trec

MR-to-RST Delay

MR Glitch Rejection

MR Input Pulse Width