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SRC0 датащи(PDF) 25 Page - STMicroelectronics

номер детали SRC0
подробное описание детали  Power-up duration determined primarily by push-button press
PDF  48 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRC0 датащи(HTML) 25 Page - STMicroelectronics

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DocID026008 Rev 2
25/48
SRC0
Waveforms
48
Figure 19. Long push (option with enable deassertion)
1.
tSRD period is set by external capacitor CSRD.
2.
PB ignored during tINT_Min.
3.
After tSRD expires EN is forced low.
PB status
ignored
PB status
ignored
VCC undervoltage detection status ignored
PB
PS
HOLD
INT
(2)
EN
(3)
Push-button
pressed and PB
connected to GND
tDEBOUNCE
Push-button held even
after tSRD expires and
EN is deasserted
t INT_Min
tDEBOUNCE
After tEN_OFF expires
PB is monitored for
falling edge
tEN_OFF
INT can go high, if PB goes high,
but system freezes and processor
won’t respond
if system freezes, processor won’t
respond to any INT status change
tSRD
(1)
set by CSRD
SR
AM00253v2



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