AN3271 datasheet(11/29 Pages) STMICROELECTRONICS

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AN3271 数据表(PDF) 11 Page - STMicroelectronics

部件名	AN3271

功能描述	This application note provides

PDF	29 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

11 / 29 page

AN3271

Push-button input glitch immunity

Doc ID 17933 Rev 2

11/29

Push-button input glitch immunity

A mechanical push-button connected to PB or SR input can produce a quite noisy signal

during switching. The STM660x ignores all the glitches and asserts an enable output (EN or

EN) only if the push-button input stays low for the debounce time period tDEBOUNCE

(typically 32 ms).

Figure 7.

Push-button noise immunity

PB and SR inputs are also equipped with high ESD protection of ±8 kV (human body

model).

tDEBOUNCE

32 ms (typ.)

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