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AS3715 Datasheet(PDF) 59 Page - ams-OSRAM AG

Part # AS3715
Description  Dual or Single Power Path PMIC
PDF  159 Pages
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Manufacturer  AMSOSRAM [ams-OSRAM AG]
Direct Link  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS3715 Datasheet(HTML) 59 Page - ams-OSRAM AG

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Page 58
ams Datasheet
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[v1-03] 2015-Aug-10
AS3715 − Detailed Description – System Functions
Reset Reasons
Reset can be activated from 8 different sources:
• VPOR has been reached (VSUP/VBAT rising from scratch)
• VSUP low, ResVoltFall (2.5V) has been reached
• Software forced reset by force_reset
• ONKEY or ENx long press has been detected
• External triggered through the pin XRES
• Over-temperature T140 (die)
• Over-temperature T140 SD4 (sub die)
• Watchdog
Voltage Detection:
There are two types of voltage dependent resets: VPOR and
VRESRISE. VPOR monitors the voltage on V2_5 and VRESRISE
monitors the voltage on VSUP. The linear regulator for V2_5 is
always ON and uses the voltage VUSB/VBAT/VSUP as its source.
The pin XRES is only released if V2_5 is above VPOR, VSUP is
above ResVoltRise.
VRESFALL is only accepted if the reset condition is longer than
VRESMASK. This guard time is used to avoid a complete reset of
the system in case of short drops of VBAT.
Figure 59:
VSUP Supervision
VSUP Supervision: Describes the behavior of the PMIC when VSUP drops below ResVoltFall depending on OTP
bit settings.
SupResEn
power_off_at_vsuplow
auto_off
Behavior if VSUP<ResVoltFall
0
x
x
LowBat interrupt is generated
10
0
Reset cycle is initiated, PMIC will move to “VSUP
debonce” state and start-up if
VSUP>ResVoltRise
10
1
Reset cycle is initiated, PMIC will move to “VSUP
debonce” state and try to start-up if
VSUP>ResVoltRise, if not it will go to the “Power
OFF” state
11
x
Reset cycle is initiated, PMIC will move to
“Power OFF” state



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