NRF52820-QDAA-R datasheet(417/437 Pages) NORDIC

417 / 437 page

Hardware and layout

Name

Function

Description

Recommended usage

P0.28

Digital I/O

General purpose I/O

Standard drive, low frequency I/O

only

P0.03

AIN1

Digital I/O

Analog input

General purpose I/O

Analog input

Standard drive, low frequency I/O

only

P0.02

AIN0

Digital I/O

Analog input

General purpose I/O

Analog input

VSS

Power

Ground

DEC4

Power

1.3 V regulator supply decoupling

Must be connected to DEC6 (pin

26)

DCC

Power

DC/DC converter output

VDD

Power

Power supply

Backside of the the chip

Die pad

VSS

Power

Ground pad

Exposed die pad must be

connected to ground (VSS) for

proper device operation

Table 115: QFN40 pin assignments

For more information on standard drive, see GPIO — General purpose input/output on page 127. Low

frequency I/O is a signal with a frequency up to 10 kHz.

7.2 Mechanical specifications

The mechanical specifications for the packages show the dimensions in millimeters.

7.2.1 QFN40 5 x 5 mm package

Figure 148: QFN40 5 x 5 mm package

4463_156 v1.0

417

NRF52820-QDAA-R Datasheet(PDF) 417 Page - Nordic Semiconductor

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