AS3701 datasheet(42/110 Pages) AMSOSRAM

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ams Datasheet

Page 41

[v1-11] 2016-Dec-14

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AS3701 − Detailed Description – System Functions

Figure 50:

Reset Levels

Note(s):

1. The selection of the range and level is done via OTP. It´s recommended to set the ResVoltRise level 200mV above the ResVoltFall

level to have a hysteresis

2. 2.7V is the default value, other levels can be set via SW

3. XRES signal is debounced with the specific mask time for rising- and falling slope of VBAT

Stand-By

Stand-by allows shutting down all rails or just a selected

number and can be achieved by one of the following cases:

Enter Via GPIO

To enter the Stand-by mode via GPIO command, the following

settings have to be done:

• Enable just these interrupt sources which should lead to

leave the stand-by mode

• Make sure that the specified interrupt is inactive (clear the

• Set the gpioX_mode [GPIOxcontrol] to input and the

gpioX_iosf [GPIOxcontrol] should be set to Stand-by +

vselect input (gpioX_iosf = 6)

• Set RegX_select [Reg_Control] and RegX_voltage [RegX_

Voltage] if another voltage is needed during stand-by for

up to 2 regulators

• Define which regulators should be kept powered during

Stand-by mode (sdX_stby_on and ldoX_stby_on [Reg_

standby_mod1])

• Set the off_delay [Startup_Control] for going into stand-by

after the GPIO command

• Activate the selected GPIO

Symbol

Parameter

Note

Min

Typ

Max

Unit

VPOR

Overall power on reset

Monitor on VSUPpower ON

reset for

all internal functions

1.5

2.0

2.3

VXRES_rise

RESET level for VSUP rising

Monitor voltage on VSUP

rising level

ResVolt

Rise(1)

VXRES_fall

RESET Level for VSUP falling

Monitor voltage on

VSUP falling level

2.7

if SupResEn = 1 only

ResVolt

Fall(2)

VXRES_mask

Mask time for VXRES_fall

Duration for

VBAT < ResVoltFall

until a reset cycle is started (3)

FastResEn = 0

FastResEn = 1

μs

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