NINA-B1 series - System Integration Manual
UBX-15026175 - R06
System description
Page 10 of 48
Function
Pin Name
Pin No.
nR52
pin
Type
Description
u-blox connectivity software
GPIO_23
23
P0.05
I/O
General purpose I/O
Pin is analog capable
UART_RXD:
UART data input
GPIO_24
24
P0.02
I/O
General purpose I/O
Pin is analog capable
GPIO_25
25
P0.03
I/O
General purpose I/O
Pin is analog capable
GPIO_27
27
P0.04
I/O
General purpose I/O
Pin is analog capable
Control
RESET_N
19
P0.21
I
System reset input
Active low
Radio
ANT
13
I/O
Tx/Rx antenna interface
Used with NINA-B111 modules
NFC1/GPIO_2
8
28
P0.09
I/O
NFC antenna pin 1
May be used as a GPIO
NFC2/GPIO_2
9
29
P0.10
I/O
NFC antenna pin 2
May be used as a GPIO
Other
SWO/GPIO_8
8
P0.18
I/O
Serial Wire debug trace data
output
May be used as a GPIO
BLUE:
System status signal
SWDCLK
11
I
Serial Wire Debug port clock signal
SWDIO
15
I/O
Serial Wire Debug port data signal
Table 2: NINA-B1 pin description
Do not apply any Voltage to Digital, Control and Radio signal groups while in Non-powered
mode to avoid damaging the module.
1.3
Supply interfaces
1.3.1
Main supply input
The NINA-B1 series uses an integrated DC/DC converter to transform the supply voltage presented at the
VCC
pin into a stable system core voltage. Due to this, the NINA-B1 modules are compatible for use in battery
powered designs.
While using NINA-B1 with a battery, it is important that the battery type can handle the peak power of the
module. In case of battery supply, consider adding extra capacitance on the supply line to avoid capacity
degradation. See the
NINA-B1 series Data Sheet [2]
for information about voltage supply requirement and
current consumption.
Table 3: Summary of voltage supply requirements
The current requirement in Table 3 considers using the u-blox connectivity software with UART
comunication. But it does not include any aditional I/O current. Any use of external push-buttons, LEDs, or
other interfaces will add to the total current consumption of the NINA-B1 module. The peak current
consumption of the entire design will have to be taken into account when considering a battery powered
solution.
1.3.2
Digital I/O interfaces reference voltage (VCC_IO)
On the NINA-B1 series modules, the I/O voltage level is the same as the supply voltage and
VCC_IO
is internally
connected to the supply input
VCC
.
Rail
Voltage requirement
Current requirement (peak)
VCC
1.7 V – 3.6 V
15 mA
