AS3722 datasheet(59/199 Pages) AMSOSRAM

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[v1-01] 2015-Sep-07

AS3722 − Detailed Descriptions- System Functions

Parameter

Figure 56:

Reset levels

Reset Levels: Shows the electrical parameter of the voltage supervisors controlling start-up and reset cycles.

Note(s) and/or Footnote(s):

1. It’s recommended to set the ResVoltRise level 200mV above the ResVoltFall level to have a hysteresis.

2. XRES signal is de-bounced with the specified mask time for rising- and falling slope of VBAT.

Stand-By

Description

Stand-by allows shutting down a part or the complete system.

Stand-by can be terminated by every possible interrupt or

ENABLE1of the PMU. The interrupt has to be before going to

stand-by.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VPOR

Overall power on reset

Monitor voltage on

V2_5; power on reset

for all internal

functions

1.5

2.0

2.3

VRESRISE

Reset level for

VSUP/VBAT rising

Monitor voltage on

VBAT; rising level

ResVoltRise(1)

Monitor voltage on

VSUP; rising level

vsup_min

VRESFALL

Reset level for

VSUP/VBAT falling

Monitor voltage on

VSUP/VBAT; falling

level

2.5

if SupResEn=1

ResVoltFall or

vsup_min

VRESMASK

Mask time for VRESFALL.

Duration for

VBAT<ResVoltFall or

VSUP<vsup_min until a

reset cycle is started(2)

FastResEn = 0

FastResEn = 1

μs

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