Pin Function Grouping for nRF52840

Looking at the datasheet of this component, can you group together pins by their functions? for example for Power, 3v3, gnd_1 gnd_2 etc Also can you place them into their respective sections based on their functions NOTE: If you group them, can you not add the same pin if you already added them in a group? You should know which pin function is common for its function

Thought for 26 sec

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I’ll update the nRF52840 symbol organization by assigning each pin to one functional section and one pin group only, using the datasheet pin functions as the source of truth. I’ll first inspect the current pins/properties, then apply grouped sections and verify there are no duplicate group assignments.

Worked for 14 mins 53 sec

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Done — I grouped all 49 nRF52840-QFAA terminals into mutually exclusive functional sections and updated Section, Pin Group, Pin Type, and Pin Description properties. I also created the detailed reference file here: nRF52840-QFAA-F-R Pin Grouping.

No pin was assigned to more than one functional section; multifunction pins keep their alternate functions in the descriptions.

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nRF52840-QFAA-F-R Pin Grouping

Purpose: organize the 49 terminals of the nRF52840-QFAA QFN48 symbol into mutually exclusive functional sections. Each physical pin is assigned to exactly one Section and one Pin Group; multifunction capabilities are retained in the Pin Description rather than duplicating the pin in multiple groups.

Source basis: Nordic nRF52840 Product Specification pin naming/function conventions, the current part terminal list, and official Nordic documentation lookup. The uploaded PDF search did not expose the full QFN48 pin table as extractable text, so the symbol's pin-numbered terminal names were cross-checked against Nordic's known QFN48 naming conventions.

Functional sections used

Table

Section	Included pins	Rationale
Power Supply	1, 12, 17, 25, 32, 33, 34, 37, 45, 46, 47, 48, 49	VDD, VSS/VSS_PA, exposed pad, DCC, and DEC regulator/decoupling pins.
Clock	2, 3, 35, 36	LF crystal pins XL1/XL2 and HF crystal pins XC1/XC2.
Analog	4, 5, 39, 40, 41, 42, 43, 44	GPIO pins with SAADC analog input functions AIN0-AIN7.
GPIO	7, 8, 13, 14, 15, 18, 19, 20, 21, 22, 23, 38	General digital GPIO without a higher-priority dedicated symbol group.
Debug	6, 9, 10, 11, 24, 26, 27	SWD and trace pins.
Reset	16	P0.18/nRESET, separated for visibility because reset is a board-level control signal.
Interface	29, 30	NFC antenna pins NFC1/NFC2.
Communication	31	2.4 GHz RF antenna pin ANT.
MISC	28	No-connect pin.

Pin-by-pin assignments

Table

Pin	Terminal	Section	Pin Group	Pin Type	Description
1	DEC1	Power Supply	Power	Power Out	1.1 V regulator supply decoupling; connect required capacitor per Nordic reference design.
2	P0.00XL1	Clock	Crystal	Bi-Directional	GPIO P0.00; 32.768 kHz low-frequency crystal input XL1.
3	P0.01_XL2	Clock	Crystal	Bi-Directional	GPIO P0.01; 32.768 kHz low-frequency crystal output XL2.
4	P0.04_AIN2	Analog	ADC	Bi-Directional	GPIO P0.04; SAADC analog input AIN2.
5	P0.05AIN3	Analog	ADC	Bi-Directional	GPIO P0.05; SAADC analog input AIN3.
6	P0.07TRACECLK	Debug	Debug	Bi-Directional	GPIO P0.07; trace buffer clock output TRACECLK.
7	P0.08	GPIO	PA	Bi-Directional	General purpose I/O P0.08.
8	P1.08	GPIO	PB	Bi-Directional	General purpose I/O P1.08.
9	P1.09TRACEDATA3	Debug	Debug	Bi-Directional	GPIO P1.09; trace buffer data output TRACEDATA[3].
10	P0.11TRACEDATA2	Debug	Debug	Bi-Directional	GPIO P0.11; trace buffer data output TRACEDATA[2].
11	P0.12TRACEDATA1	Debug	Debug	Bi-Directional	GPIO P0.12; trace buffer data output TRACEDATA[1].
12	VDD_1	Power Supply	VDD	Power In	Main VDD power supply input.
13	P0.13	GPIO	PA	Bi-Directional	General purpose I/O P0.13.
14	P0.14	GPIO	PA	Bi-Directional	General purpose I/O P0.14.
15	P0.17	GPIO	PA	Bi-Directional	General purpose I/O P0.17.
16	P0.18NRESET	Reset	Reset / GPIO	Bi-Directional	GPIO P0.18; configurable system reset nRESET.
17	VDD_2	Power Supply	VDD	Power In	Main VDD power supply input.
18	P0.19	GPIO	PA	Bi-Directional	General purpose I/O P0.19.
19	P0.20	GPIO	PA	Bi-Directional	General purpose I/O P0.20.
20	P0.21	GPIO	PA	Bi-Directional	General purpose I/O P0.21.
21	P0.22	GPIO	PA	Bi-Directional	General purpose I/O P0.22.
22	P0.23	GPIO	PA	Bi-Directional	General purpose I/O P0.23.
23	P0.24	GPIO	PA	Bi-Directional	General purpose I/O P0.24.
24	P1.00TRACEDATA0	Debug	Debug	Bi-Directional	GPIO P1.00; trace buffer data output TRACEDATA[0], also used for SWO.
25	VDD_3	Power Supply	VDD	Power In	Main VDD power supply input.
26	SWDIO	Debug	SWD	Bi-Directional	Serial wire debug data for programming and debug.
27	SWDCLK	Debug	SWD	Input	Serial wire debug clock input for programming and debug.
28	NC	MISC	No connect	Not Connected	No internal connection; leave unconnected.
29	P0.09NFC1	Interface	NFC antenna / GPIO	Bi-Directional	GPIO P0.09; NFC antenna connection NFC1.
30	P0.10NFC2	Interface	NFC antenna / GPIO	Bi-Directional	GPIO P0.10; NFC antenna connection NFC2.
31	ANT	Communication	2.4 GHz RF	Passive	Single-ended 2.4 GHz radio antenna connection; follow Nordic RF reference layout.
32	VSS_PA	Power Supply	VSS	Ground	Ground for radio power amplifier supply.
33	DEC6	Power Supply	Power	Power Out	1.3 V radio regulator supply decoupling; decouple per Nordic reference circuit.
34	DEC3	Power Supply	Power	Power Out	Internal supply decoupling pin; connect capacitor per Nordic reference circuit.
35	XC1	Clock	Crystal	Input	32 MHz high-frequency crystal connection XC1.
36	XC2	Clock	Crystal	Output	32 MHz high-frequency crystal connection XC2.
37	VDD_4	Power Supply	VDD	Power In	Main VDD power supply input.
38	P1.15	GPIO	PB	Bi-Directional	General purpose I/O P1.15.
39	P0.03AIN1	Analog	ADC	Bi-Directional	GPIO P0.03; SAADC analog input AIN1.
40	P0.02AIN0	Analog	ADC	Bi-Directional	GPIO P0.02; SAADC analog input AIN0.
41	P0.28AIN4	Analog	ADC	Bi-Directional	GPIO P0.28; SAADC analog input AIN4.
42	P0.29AIN5	Analog	ADC	Bi-Directional	GPIO P0.29; SAADC analog input AIN5.
43	P0.30AIN6	Analog	ADC	Bi-Directional	GPIO P0.30; SAADC analog input AIN6.
44	P0.31AIN7	Analog	ADC	Bi-Directional	GPIO P0.31; SAADC analog input AIN7.
45	VSS_1	Power Supply	VSS	Ground	Ground VSS.
46	DEC4	Power Supply	Power	Power Out	1.3 V regulator supply decoupling; connect/decouple with DEC6 per Nordic guidance.
47	DCC	Power Supply	Power	Power Out	DC/DC converter output node; connect external inductor/capacitors per Nordic reference circuit.
48	VDD_5	Power Supply	VDD	Power In	Main VDD power supply input.
49	VSS_2	Power Supply	VSS	Ground	Exposed die pad VSS; connect to ground for operation, thermal, and RF performance.

Verification

All 49 physical pins are represented.
Each pin has exactly one Section value.
Each pin has exactly one Pin Group value.
No pin was duplicated across functional groups.
Pin descriptions preserve important alternate functions for GPIO/analog, GPIO/clock, GPIO/NFC, GPIO/reset, and GPIO/trace pins.

Functional sections used

Pin-by-pin assignments

Verification

Reviews

Documents

nRF52840-QFAA-F-R Pin Grouping

Assets

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NRF52840-QFAA-F-R

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NRF52840-QFAA-F-R

NRF52840-QFAA-F-R.stp3D Model

Project Name

NRF52840-QFAA-F-R

Description

IC RF TxRx + MCU 802.15.4, Bluetooth Bluetooth v5.0, Thread, Zigbee® 2.4GHz 48-VFQFN Exposed Pad

The NRF52840-QFAA-F-R belongs to Nordic’s nRF52 series and supports multiple wireless standards including Bluetooth 5, Bluetooth Low Energy (BLE), Thread, Zigbee, ANT, and proprietary 2.4 GHz protocols. It features a 64 MHz ARM Cortex-M4F CPU with floating-point unit (FPU), making it suitable for both wireless communication and real-time embedded processing.

The device integrates large memory resources, rich peripherals, USB support, NFC capability, and advanced security features, reducing the need for external components in wireless embedded designs.

Key Features 32-bit ARM Cortex-M4F processor running at 64 MHz 1 MB Flash memory and 256 KB RAM Supports Bluetooth 5 / BLE, Thread, Zigbee, ANT, and proprietary 2.4 GHz protocols IEEE 802.15.4 compliant radio Up to +8 dBm TX output power High receiver sensitivity down to −103 dBm Data rates up to 2 Mbps Ultra-low power consumption for battery-powered applications USB 2.0 Full-Speed controller NFC-A tag support Multiple communication interfaces: SPI UART I2C (TWI) I2S PWM PDM ADC Up to 48 GPIOs Integrated ARM CryptoCell-310 security engine Operating voltage range: 1.7 V to 5.5 V Operating temperature: −40°C to +85°C Compact 48-QFN (6×6 mm) package Typical Applications BLE devices Smart home products Wearables Wireless sensors Industrial IoT HID devices (keyboard/mouse) Asset tracking Mesh networking devices USB dongles and gateways PCB Design Notes

Community PCB reviews commonly recommend:

Proper RF grounding and 50-ohm antenna routing Using ESD/TVS protection on USB lines Keeping RF matching components close to the antenna Using solid ground planes for 2.4 GHz performance

#CommonPartsLibrary #IntegratedCircuit #RF

Properties

Manufac… Number

NRF52840-QFAA-F-R

Manufac…er Name

Nordic Semiconductor

Part Type

Integrated Circuits

Datasheet URL

mm.digikey.com/Volume0/opasdata/d220001/medias/docus/6470/NRF52840-QFAA-F-R.pdf

Designator Prefix

License

creativecommons.org/licenses/by/4.0/

Symbol Style

parametric-v1

Pricing & Availability

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Controls

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