The QFN40 pin assignment figure and table describe the pinouts for this variant of the device.
Pins that can be used as clock signals are shown in as red in the figure. For more information about clock pins, see Clock pins.
| Pin | Clock pin | Name | Function | Description | Dedicated function |
|---|---|---|---|---|---|
| 1 |
|
P1.00 XL1 |
Digital I/O Analog input |
General purpose I/O Connection for 32.768 kHz crystal |
|
| 2 |
|
P1.01 XL2 |
Digital I/O Analog input |
General purpose I/O Connection for 32.768 kHz crystal |
|
| 3 |
|
P1.02 NFC1 |
Digital I/O NFC input |
General purpose I/O NFC antenna connection |
|
| 4 | Yes |
P1.03 NFC2 |
Digital I/O NFC input |
General purpose I/O NFC antenna connection |
|
| 5 | Yes |
P1.04 ASO[0] AIN0 |
Digital I/O Digital I/O Analog input |
General purpose I/O TAMPC active shield 0 output Analog input |
TAMPC
|
| 6 |
|
P1.05 ASI[0] RADIO[6] AIN1 |
Digital I/O Digital I/O Digital I/O Analog input |
General purpose I/O TAMPC active shield 0 input RADIO DFEGPIO Analog input |
TAMPC RADIO
|
| 7 |
|
P1.06 ASO[1] AIN2 |
Digital I/O Digital I/O Analog input |
General purpose I/O TAMPC active shield 1 output Analog input |
TAMPC
|
| 8 | Yes |
P1.08
EXTREF |
Digital I/O Digital I/O Analog input |
General purpose I/O GRTC CLKOUTFAST External reference for SAADC |
|
| 9 |
|
VDD |
Power |
Power supply |
|
| 10 |
|
P2.00
|
Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O |
General purpose I/O SPIM DCX UARTE RXD FLPR.4 QSPI D3 |
SPIM00/20 UARTE00/20 FLPR FLPR (QSPI) |
| 11 | Yes |
P2.01
|
Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O |
General purpose I/O SPIM SCK SPIS SCK FLPR.0 QSPI SCK |
SPIM00/20 SPIS00/20 FLPR FLPR (QSPI |
| 12 |
|
P2.02
|
Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O |
General purpose I/O SPIM SDO SPIS SDO UARTE TXD FLPR.1 QSPI D0 |
SPIM00/20 SPIS00/20 UARTE00/20 FLPR FLPR (QSPI)
|
| 13 |
|
P2.03
|
Digital I/O Digital I/O Digital I/O |
General purpose I/O FLPR.3 QSPI D2 |
FLPR FLPR (QSPI) |
| 14 |
|
P2.04
|
Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O |
General purpose I/O SPIM SDI SPIS SDI UARTE CTS FLPR.2 QSPI D1 |
SPIM00/20 SPIS00/20 UARTE00/20 FLPR FLPR (QSPI)
|
| 15 |
|
P2.05
|
Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O |
General purpose I/O SPIM CSN SPIS CSN UARTE RTS FLPR.5 QSPI CSN |
SPIM00/20 SPIS00/20 UARTE00/20 FLPR FLPR (QSPI) |
| 16 | Yes |
P2.06
TRACECLK |
Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O |
General purpose I/O FLPR.6 SPIM SCK SPIS SCK Trace clock |
FLPR SPIM00/21 SPIS00/21 Trace |
| 17 |
|
P2.07
TRACEDATA[0] SWO
|
Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O |
General purpose I/O FLPR.7 Trace data Serial wire output (SWO) SPIM DCX UARTE RXD |
FLPR Trace Trace SPIM00/21 UARTE00/21 |
| 18 |
|
P2.08
TRACEDATA[1]
|
Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O |
General purpose I/O FLPR.8 Trace data SPIM SDO SPIS SDO UARTE TXD |
FLPR Trace SPIM00/21 SPIS00/21 UARTE00/21 |
| 19 |
|
VDD |
Power |
Power supply |
|
| 20 |
|
P0.00 |
Digital I/O |
General purpose I/O |
|
| 21 |
|
P0.01 |
Digital I/O |
General purpose I/O |
|
| 22 |
|
SWDIO |
Debug |
Serial wire data. Bidirectional with standard-drive and on-chip pull-up. |
|
| 23 |
|
SWDCLK |
Debug |
Serial wire clock. Input with on-chip pull-down. |
|
| 24 | Yes |
P0.04
|
Digital I/O Digital I/O |
General purpose I/O GRTC CLKOUT32K |
GRTC |
| 25 |
|
nRESET |
Reset |
Pin reset with on-chip pull-up |
|
| 26 |
|
ANT |
RF |
Single ended radio antenna connection |
See Reference circuitry for guidelines on how to ensure good RF performance |
| 27 |
|
VSS_PA |
Power |
Ground (radio supply) |
|
| 28 |
|
DECRF |
Power |
0.9 V regulator supply decoupling |
Must be connected to DECA. See Reference circuitry. |
| 29 |
|
XC1 |
Analog input |
Connection for 32 MHz crystal |
|
| 30 |
|
XC2 |
Analog input |
Connection for 32 MHz crystal |
|
| 31 |
|
VDD |
Power |
Power supply |
|
| 32 | Yes |
P1.11 ASO[3] RADIO[2] AIN4 |
Digital I/O Digital I/O Digital I/O Analog input |
General purpose I/O TAMPC active shield 3 output RADIO DFEGPIO Analog input |
TAMPC RADIO
|
| 33 | Yes |
P1.12 ASI[3] RADIO[3] AIN5 |
Digital I/O Digital I/O Digital I/O Analog input |
General purpose I/O TAMPC active shield 3 input RADIO DFEGPIO Analog input |
TAMPC RADIO
|
| 34 |
|
P1.13 RADIO[4] AIN6 |
Digital I/O Digital I/O Analog input |
General purpose I/O RADIO DFEGPIO Analog input |
RADIO
|
| 35 |
|
P1.14 RADIO[5] AIN7 |
Digital I/O Digital I/O Analog input |
General purpose I/O RADIO DFEGPIO Analog input |
RADIO
|
| 36 |
|
DECA |
Power |
0.9 V regulator supply decoupling |
Must be connected to DECRF |
| 37 |
|
VSS |
Power |
Ground |
|
| 38 |
|
DECD |
Power |
0.9 V regulator supply decoupling |
|
| 39 |
|
DCC |
Power |
DC/DC regulator output |
|
| 40 |
|
VDD |
Power |
Power supply |
|
| 41 |
|
VSS |
Power |
Ground pad (die pad) |
|
For the device to function properly, the exposed die pad (pin 49) must be connected to ground (VSS, pins 32 and 44).