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NRF9160-SICA-R7 Datasheet(PDF) 51 Page - Nordic Semiconductor

Part # NRF9160-SICA-R7
Description  nRF9160 Product Specification
PDF  400 Pages
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Manufacturer  NORDIC [Nordic Semiconductor]
Direct Link  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF9160-SICA-R7 Datasheet(HTML) 51 Page - Nordic Semiconductor

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Power and clock management
GPIO
VDD_GPIO
External supply
P0.00
P0.01
P0.30
P0.31
. . .
nRF91
Figure 9: GPIO supply input (VDD_GPIO)
The I/Os are supplied via VDD_GPIO pin as shown in figure above. VDD_GPIO pin supports voltage levels
within range given in table Operating conditions on page 391
5.1.3 Power supply monitoring
Power monitor solutions are available in the device, in order to survey the VDD (battery voltage).
5.1.3.1 Power supply supervisor
The power supply supervisor enables monitoring of the connected power supply.
Two functionalities are implemented:
• Power-on reset (POR): Generates a reset when the supply is applied to the device, and ensures that the
device starts up in a known state
• Brownout reset (BOR): Generates a reset when the supply drops below the minimum voltage required
for safe operations
Two BOR levels are used:
• VBOROFF, used in System OFF
• VBORON, used in System ON
The power supply supervisor is illustrated in the image below.
VBOR
Brownout reset
Power-on reset
C
R
VDD
Figure 10: Power supply supervisor
4418_1315 v2.0
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