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SRC0 Datasheet(PDF) 16 Page - STMicroelectronics

Part # SRC0
Description  Power-up duration determined primarily by push-button press
PDF  48 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRC0 Datasheet(HTML) 16 Page - STMicroelectronics

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DocID026008 Rev 2
Figure 9. Unsuccessful power-up on SRC0 (PB released prior to tON_BLANK)
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 goes low with PB release, because processor did not force PSHOLD signal high.
internal pull-down resistor
connected to PSHOLD input
PSHOLD
ignored
PB status
ignored
VCC undervoltage detection
ignored
PB
(1)
PSHOLD
(2)
EN
(3)
RST
Push-button pressed and
PB connected to GND
tDEBOUNCE
PB released
PSHOLD state detected as low
EN deasserted
tREC
tEN_OFF
tON_BLANK
AM00248v3
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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