NRF9160-SICA-R7 datasheet(52/400 Pages) NORDIC

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Power and clock management

5.1.3.2 Battery monitoring on VDD

A battery voltage (VDD) monitoring capability is provided via a modem API

Note: For details regarding the modem API, please refer to nRF Connect SDK document and nRF91

AT Commands, Command Reference Guide document.

5.1.3.3 Registers

5.1.3.4 Electrical specification

5.1.3.4.1 Device startup times

Symbol

Description

Min.

Typ.

Max.

Units

tPOR

Time in power-on reset after VDD has reached 3V, ENABLE

is tied to VDD.

1.2

tPINR

The maximum time taken to pull up the nRESET pin and

release reset after power-on reset. Dependent on the pin

capacitive load (C)2: t=TRC; Typical: T=2 R=13 kΩ; Max: T=5

R=16 kΩ.

tPINR,500nF

C=500 nF

tPINR,10uF

C=10 µF

260

800

tR2ON

Time from reset to ON (CPU execute)

127

µs

tOFF2ON

Time from OFF to CPU execute

µs

tWFE2CPU

Time from WFE to CPU execute

µs

tWFI2CPU

Time from WFI to CPU execute

µs

tEVTSET,CL1

Time from HW event to PPI event in constant latency

System ON mode

0.1

µs

tEVTSET,CL0

Time from HW event to PPI event in low power System ON

mode

0.1

0.7

µs

tLTEMODEM,TYP

LTE modem typical startup time. Time from application

core powering up the modem until the modem is ready to

receive the first AT command.

200

tLTEMODEM,WORSTCASE LTE modem worst case startup time. Time from application

core powering up the modem until the modem is ready to

receive the first AT command, with modem FW variable

elements included.

250

tLTEMODEM,FOTA

LTE modem startup time after modem FOTA update. Time

from application core powering up the modem after a

modem FOTA update until the modem is ready to receive

the first AT command.

7.5

tLTEMODEM,FOTAREJECT LTE modem startup time after a rejected modem FOTA

update. Time from application core powering up the

modem after a rejected modem FOTA update until the

modem is ready to receive the first AT command. Modem

will revert back to original FW image.

tLTEMODEM,STOP,TYP LTE modem typical shutdown time. Time from application

core calling bsd_shutdown command until bsd_shutdown

returns.

1.6

2 To decrease the maximum time a device could be held in reset, a strong external pull-up resistor can

be used.

4418_1315 v2.0

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