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SRC0 데이터시트(PDF) 14 Page - STMicroelectronics

부품명 SRC0
상세설명  Power-up duration determined primarily by push-button press
PDF  48 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRC0 데이터시트(HTML) 14 Page - STMicroelectronics

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Waveforms
SRC0
14/48
DocID026008 Rev 2
4
Waveforms
Figure 7. Successful power-up on SRC0 (PB released prior to tON_BLANK expiration)
1.
PB detection on falling and rising edges.
2.
Internal pull-down resistor 300 k
 is connected to PS
HOLD input during power-up.
3.
EN signal is high even after PB release, because processor sets PSHOLD signal high before PB is
released.
PSHOLD
ignored
internal pull-down resistor
connected to PSHOLD input
VCC undervoltage detection
ignored
PB
(1)
PSHOLD
(2)
EN
(3)
RST
Push-button pressed and
PB connected to GND
tDEBOUNCE
tREC
processor
sets PSHOLD
PB released prior to t ON_BLANK
expiration
PSHOLD state detected as high
EN remains asserted
tON_BLANK
AM00247v3
INT signal is held high during power-up (i.e. until PB release in this case).
V
CC is considered VCC > VTH+.
Note:



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