u-blox NINA-B112 - Page 9

NINA-B1 series - System Integration Manual
UBX-15026175 - R06 System description
Page 9 of 48
Function Pin Name Pin No.
nR52
pin
Type Description u-blox connectivity software
Power VCC 10 PWR Module supply input
1.7-3.6V range
VCC_IO 9 PWR IO Voltage supply input
Must be connected to VCC on NINA-B1
GND 6, 12, 14,
26, 30
GND Module ground
EGP - GND
The exposed pads in the center of
the module should be connected
to the GND
GPIO
GPIO_1
1
P0.08
I/O
General purpose I/O
RED:
System status signal
GPIO_2
2
P0.11
I/O
General purpose I/O
GPIO_3
3
P0.12
I/O
General purpose I/O
GPIO_4
4
P0.13
I/O
General purpose I/O
GPIO_5
5
P0.14
I/O
General purpose I/O
GPIO_7
7
P0.16
I/O
General purpose I/O
GREEN/SWITCH_1:
This signal is multiplexed:
GREEN: System status signal.
SWITCH_1:
• Grounding SWITCH_1 and
SWITCH_2 during a reset will
make the module enter the
bootloader.
• Grounding SWITCH_1 and
SWITCH_2 during a reset and
holding it low for 10s will
make the module restore all
factory settings.
GPIO_16
16
P0.28
I/O
General purpose I/O
Pin is analog capable
UART_DTR:
Can be used to indicate system
mode
GPIO_17
17
P0.29
I/O
General purpose I/O
Pin is analog capable
UART_DSR:
Can be used to set system mode
GPIO_18
18
P0.30
I/O
General purpose I/O
Pin is analog capable
SWITCH_2:
• Grounding SWITCH_1 and
SWITCH_2 during reset will
make the module enter the
bootloader.
• Grounding SWITCH_1 and
SWITCH_2 during a reset and
holding it low for 10s will
make the module restore all
factory settings.
• Grounding SWITCH_2 during
reset will reset the UART serial
settings.
• Can be use as external connect
or to enable parable mode.
See u-blox Short Range
Modules AT Commands
Manual [4] for more details.
GPIO_20
20
P0.31
I/O
General purpose I/O
UART_RTS:
UART request to send control signal
GPIO_21
21
P0.07
I/O
General purpose I/O
UART_CTS:
UART clear to send control signal
GPIO_22
22
P0.06
I/O
General purpose I/O
UART_TXD
UART data output