Pin assignments

The pin assignment figures and tables describe the pinouts for the product variants of the device.

The nRF54LC10A device provides flexibility regarding GPIO pin routing and configuration. Some pins have limitations or recommendations on how the pin should be configured or what it should be used for.

As a general rule, peripherals must use GPIO pins in their own domain, and can be used for all peripheral functions when selected in the peripheral's PSEL register. Note the dedicated clock pin requirements listed in the following chapter. In addition, there are some dedicated pin functions that allows pin connections between different power domains.

The block diagram shows which peripheral and port belong together, see Block diagram.

The different GPIO ports have different properties. For details, see GPIO — General purpose input/output.

Dedicated pins

nRF54LC10A has some pins dedicated for specific purposes.

This device provides flexibility when it comes to routing and configuration of the GPIO pins. However, some pins have recommendations for how the pin should be configured or what it should be used for.

Table 1. Dedicated pin functions
Peripheral	Description
TRACE	Has dedicated pins that must be configured using extra high drive H0/H1 configuration in the DRIVE0/1 fields of the PIN_CNF GPIO register.
GRTC	Has dedicated pins for clock and PWM output.
TAMPC	Has dedicated pins for active shield inputs and outputs.
FLPR	Uses dedicated pins on P1 for emulated peripherals such as QSPI.
RADIO	Uses dedicated pins on P1 for antenna switch control (DFEGPIO for direction finding).

Clock pins

The device has dedicated clock pins for some peripherals. These pins have been optimized to ensure correct timing relationships between clock and data signals for these peripherals.

Clock pins can also be used as regular I/O data pins.

The peripheral data signal must be configured to use pins close to the clock pin. This ensures that the internal paths from the peripheral to the pin have the same delay, so that the data and clock signals reach the pins at the same time.

For high-speed signals, the printed circuit board (PCB) layout must use short PCB traces of identical length. This makes sure any delays are kept to a minimum, with close to identical delay on the clock and data path.

The following table shows which peripheral signals must use clock pins.

Table 2. Peripheral signals and clock pin requirement
Peripheral	Signal	Clock pin required
SPIM/SPIS	SDO	No
SPIM/SPIS	SDI	No
SPIM/SPIS	SCK	Yes
SPIM/SPIS	CSN	No
SPIM/SPIS	DCX	No
TWIM/TWIS	SCL	Yes
TRACE	TRACEDATA[]	No
TRACE	TRACECLK	Yes, dedicated pin
GRTC	CLKOUT32K	Yes, dedicated pin
GRTC	PWMOUT	Yes, dedicated pin
GRTC	CLKOUTFAST	Yes, dedicated pin

QFN48 (QFAA) package pin assignments

The QFN48 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.

Figure 1. QFN48 pin assignments, top view

Table 3. QFN48 pin assignments
Pin	Clock pin	Name	Function	Description	Dedicated function
1	Yes	P1.12 TRACEDATA[1] AIN7	Digital I/O Digital I/O Analog input	General purpose IO Trace data Analog input	Trace
2		P1.13 TRACEDATA[2] XL1	Digital I/O Digital I/O Analog input	General purpose IO Trace data Connection for 32.768 kHz crystal	Trace
3		P1.14 TRACEDATA[3] XL2	Digital I/O Digital I/O Analog input	General purpose IO Trace data Connection for 32.768 kHz crystal	Trace
4		P1.15 FLPR.4 QSPI.D3	Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI D3	FLPR FLPR(QSPI)
5	Yes	P1.16 FLPR.0 QSPI.SCK	Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI SCK	FLPR FLPR(QSPI)
6	Yes	P1.17 FLPR.1 QSPI.D0	Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI D0	FLPR FLPR(QSPI)
7		P1.18 FLPR.3 QSPI.D2 RADIO[0]	Digital I/O Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI D2 RADIO DFEGPIO	FLPR FLPR(QSPI) RADIO
8	Yes	P1.19 FLPR.2 QSPI.D1 RADIO[1]	Digital I/O Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI D1 RADIO DFEGPIO	FLPR FLPR(QSPI) RADIO
9	Yes	P1.20 FLPR.5 QSPI.CSN RADIO[2]	Digital I/O Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI CSN RADIO DFEGPIO	FLPR FLPR(QSPI) RADIO
10		P1.21 FLPR.6 RADIO[3]	Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO RADIO DFEGPIO	FLPR RADIO
11		P1.22 FLPR.7 RADIO[4]	Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO RADIO DFEGPIO	FLPR RADIO
12		P1.23 FLPR.8 RADIO[5]	Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO RADIO DFEGPIO	FLPR RADIO
13		P1.24 FLPR.9 RADIO[6]	Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO RADIO DFEGPIO	FLPR RADIO
14		DECA	Power	Power supply decoupling
15		VSS	Power	Ground
16		DECD	Power	Power supply decoupling
17		DCC	Power	DC/DC converter output
18		VDD	Power	Power supply
19		VDD	Power	Power supply
20		VSS	Power	Ground
21		VDD	Power	Power supply
22		VDD	Power	Power supply
23		P1.25	Digital I/O	General purpose IO
24		P0.00	Digital I/O	General purpose IO
25		P0.01	Digital I/O	General purpose IO
26		P0.02	Digital I/O	General purpose IO
27	Yes	P0.03	Digital I/O Digital I/O	General purpose I/O GRTC PWM	GRTC
28	Yes	P0.04	Digital I/O Digital I/O	General purpose I/O GRTC CLKOUT32K	GRTC
29		SWDIO	Debug	Serial wire data. Bidirectional with standard-drive and on-chip pull-up.
30		SWDCLK	Debug	Serial wire clock. Input with on-chip pull-down.
31		nRESET	Reset	Pin reset with on-chip pull-up
32		ANT	RF	Single ended radio antenna connection
33		VSS	Power	Ground
34		DECRF	Power	Power supply decoupling
35		XC1	Analog input	Connection for 32 MHz crystal
36		XC2	Analog input	Connection for 32 MHz crystal
37	Yes	P1.08	Digital I/O Digital I/O	General purpose I/O GRTC CLKOUTFAST	GRTC
38		P1.09	Digital I/O	General purpose I/O
39		P1.00 AIN0	Digital I/O Analog input	General purpose I/O Analog input
40		P1.01 AIN1	Digital I/O Analog input	General purpose I/O Analog input
41		P1.02 AIN2	Digital I/O Analog input	General purpose I/O Analog input
42	Yes	P1.03 AIN3	Digital I/O Analog input	General purpose I/O Analog input
43		P1.06	Digital I/O	General purpose I/O
44	Yes	P1.04	Digital I/O	General purpose I/O
45		P1.05 ASO[0] EXTREF	Digital I/O Digital I/O Analog input	General purpose IO TAMPC active shield output External reference	TAMPC
46		P1.07 AIN4 ASI[0]	Digital I/O Analog input Digital I/O	General purpose IO Analog input TAMPC active shield input	TAMPC
47		P1.10 ASO[1] TRACECLK AIN5	Digital I/O Digital I/O Digital I/O Analog input	General purpose IO TAMPC active shield output Trace clock Analog input	TAMPC Trace
48	Yes	P1.11 ASI[1] TRACEDATA[0] SWO AIN6	Digital I/O Digital I/O Digital I/O Digital I/O Analog input	General purpose IO TAMPC active shield input Trace data Serial wire output (SWO) Analog input	TAMPC Trace
49		VSS	Power	Ground

Exposed die pad (pin 49) must be connected to ground (VSS, pins 15 and 33) for proper device operation.

CSP29 (CAAA) package pin assignments

The CSP29 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.

Figure 2. CSP29 pin assignments, top view

Table 4. CSP29 pin assignments
Pin	Clock pin	Name	Function	Description	Dedicated function
A1		DECRF	Power	Power supply decoupling
A2		XC1	Analog input	Connection for 32 MHz crystal
A3		XC2	Analog input	Connection for 32 MHz crystal
A4	Yes	P1.03 AIN3	Digital I/O Analog input	General purpose I/O Analog input
A5		P1.10 ASO[1] TRACECLK AIN5	Digital I/O Digital I/O Digital I/O Analog input	General purpose IO TAMPC active shield output Trace clock Analog input	TAMPC Trace
B1		ANT	RF	Single ended radio antenna connection
B3		P1.09	Digital I/O	General purpose I/O
B4		P1.05 ASO[0] EXTREF	Digital I/O Digital I/O Analog input	General purpose IO TAMPC active shield output External reference	TAMPC
B5		P1.13 TRACEDATA[2] XL1	Digital I/O Digital I/O Analog input	General purpose IO Trace data Connection for 32.768 kHz crystal	Trace
C1		VSS	Power	Ground
C2		nRESET	Reset	Pin reset with on-chip pull-up
C3		P1.01 AIN1	Digital I/O Analog input	General purpose I/O Analog input
C4		P1.07 AIN4 ASI[0]	Digital I/O Analog input Digital I/O	General purpose IO Analog input TAMPC active shield input	TAMPC
C5		P1.14 TRACEDATA[3] XL2	Digital I/O Digital I/O Analog input	General purpose IO Trace data Connection for 32.768 kHz crystal	Trace
D1		VSS	Power	Ground
D2		SWDCLK	Debug	Serial wire clock. Input with on-chip pull-down.
D3		P1.02 AIN2	Digital I/O Analog input	General purpose I/O Analog input
D4	Yes	P1.11 ASI[1] TRACEDATA[0] SWO AIN6	Digital I/O Digital I/O Digital I/O Digital I/O Analog input	General purpose IO TAMPC active shield input Trace data Serial wire output (SWO) Analog input	TAMPC Trace
D5		DECA	Power	Power supply decoupling
E1		DECB	Power	Power supply
E2		SWDIO	Debug	Serial wire data. Bidirectional with standard-drive and on-chip pull-up.
E3		P1.00 AIN0	Digital I/O Analog input	General purpose I/O Analog input
E4	Yes	P1.12 TRACEDATA[1] AIN7	Digital I/O Digital I/O Analog input	General purpose IO Trace data Analog input	Trace
E5		DECD	Power	Power supply decoupling
F1		VDD	Power	Power supply
F2		VSS	Power	Ground
F3		VDD	Power	Power supply
F4		VSS	Power	Ground
F5		DCC	Power	DC/DC converter output

CSP39 (CBAA) package pin assignments

The CSP39 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.

Figure 3. CSP39 pin assignments, top view

Table 5. CSP39 pin assignments
Pin	Clock pin	Name	Function	Description	Dedicated function
A1		DECRF	Power	Power supply decoupling
A2		XC1	Analog input	Connection for 32 MHz crystal
A3		XC2	Analog input	Connection for 32 MHz crystal
A4		P1.01 AIN1	Digital I/O Analog input	General purpose I/O Analog input
A5		P1.00 AIN0	Digital I/O Analog input	General purpose I/O Analog input
A6		P1.10 ASO[1] TRACECLK AIN5	Digital I/O Digital I/O Digital I/O Analog input	General purpose IO TAMPC active shield output Trace clock Analog input	TAMPC Trace
B2		NC		No connect. Leave unconnected.
B4	Yes	P1.08	Digital I/O Digital I/O	General purpose I/O GRTC CLKOUTFAST	GRTC
B5	Yes	P1.03 AIN3	Digital I/O Analog input	General purpose I/O Analog input
B6	Yes	P1.12 TRACEDATA[1] AIN7	Digital I/O Digital I/O Analog input	General purpose IO Trace data Analog input	Trace
C1		ANT	RF	Single ended radio antenna connection
D3		VSS	Power	Ground
D4	Yes	P1.16 FLPR.0 QSPI.SCK	Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI SCK	FLPR FLPR(QSPI)
D5		P1.02 AIN2	Digital I/O Analog input	General purpose I/O Analog input
D6		P1.13 TRACEDATA[2] XL1	Digital I/O Digital I/O Analog input	General purpose IO Trace data Connection for 32.768 kHz crystal	Trace
E1		VSS	Power	Ground
E2		nRESET	Reset	Pin reset with on-chip pull-up
E3		P1.18 FLPR.3 QSPI.D2 RADIO[0]	Digital I/O Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI D2 RADIO DFEGPIO	FLPR FLPR(QSPI) RADIO
E4	Yes	P1.17 FLPR.1 QSPI.D0	Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI D0	FLPR FLPR(QSPI)
E5		P1.05 ASO[0] EXTREF	Digital I/O Digital I/O Analog input	General purpose IO TAMPC active shield output External reference	TAMPC
E6		P1.14 TRACEDATA[3] XL2	Digital I/O Digital I/O Analog input	General purpose IO Trace data Connection for 32.768 kHz crystal	Trace
F1		VSS	Power	Ground
F2		SWDCLK	Debug	Serial wire clock. Input with on-chip pull-down.
F3	Yes	P1.20 FLPR.5 QSPI.CSN RADIO[2]	Digital I/O Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI CSN RADIO DFEGPIO	FLPR FLPR(QSPI) RADIO
F4	Yes	P1.19 FLPR.2 QSPI.D1 RADIO[1]	Digital I/O Digital I/O Digital I/O Digital I/O	General purpose IO General purpose IO QSPI D1 RADIO DFEGPIO	FLPR FLPR(QSPI) RADIO
F5	Yes	P1.04	Digital I/O	General purpose I/O
F6	Yes	P1.11 ASI[1] TRACEDATA[0] SWO AIN6	Digital I/O Digital I/O Digital I/O Digital I/O Analog input	General purpose IO TAMPC active shield input Trace data Serial wire output (SWO) Analog input	TAMPC Trace
G1		DECB	Power	Power supply
G2		SWDIO	Debug	Serial wire data. Bidirectional with standard-drive and on-chip pull-up.
G3	Yes	P0.04	Digital I/O Digital I/O	General purpose I/O GRTC CLKOUT32K	GRTC
G4	Yes	P0.03	Digital I/O Digital I/O	General purpose I/O GRTC PWM	GRTC
G5		P1.07 AIN4 ASI[0]	Digital I/O Analog input Digital I/O	General purpose IO Analog input TAMPC active shield input	TAMPC
G6		DECA	Power	Power supply decoupling
H1		VDD	Power	Power supply
H2		VSS	Power	Ground
H3		VDD	Power	Power supply
H4		VSS	Power	Ground
H5		DCC	Power	DC/DC converter output
H6		DECD	Power	Power supply decoupling