EVK-NINA-B4 - User guide
UBX-19054587 - R03
Product description
Page 8 of 38
C1 - Public
•
Arduino UNO R3 and Raspberry Pi compatible pin header interfaces
•
Jumper headers and level shifters allow for flexible powering options of the NINA-B4 module,
even with full board support. They isolate the module entirely and control each power net
separately in order to precisely measure low power applications or disconnect only unused parts
of the board to save battery life.
•
Multiple board power supply options
o
5-12 V power plug
o
5 V USB supply
o
5-12 V Arduino VIN input
•
Battery holder supporting CR2032 coin cell batteries
2.4
EVK-NINA-B4 block diagram
Figure 3 shows the major interfaces and internal connections of the EVK-NINA-B4.
Figure 3: EVK-NINA-B4 block diagram
UART
to USB
USB
conn.
Interface
MCU
(Program &
Debug Unit)
USB
Hub
USB
conn.
Batt.
holder
Power
plug
RF
conn.
Voltage
Level
Shifters
UART
SWD
Flash
Memory
3.3 V VDD_NINA
DC/DC
reg.
Protect.
diodes
NFC antenna
connector
Dedicated NINA
USB 2.0 conn.
VDD_NINA
Bluetooth
802.15.4
Arduino Uno R3 interface
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
D
10
D
11
D
12
D
13
S
C
L
S
D
A
A
0
A
1
A
2
A
3
A
4
A
5
IOR
E
F
3V
3
5V
V
IN
G
ND
R
ES
E
T
ADC/Comp.
GPIO/Dig. Interface
GPIO/Dig. Interface
UART
GPIO/Dig. Int.
UART
SW2
Raspberry Pi 40 pin GPIO header
3V
3
5V
G
ND
GPIO/Digital Interface
UART
ID
_S
C
ID
_S
D
R
Pi
_3
R
Pi
_4
R
Pi
_5
R
Pi
_6
R
Pi
_7
R
Pi
_2
R
Pi
_8
R
Pi
_9
R
P
i_
10
R
P
i_
11
R
P
i_
12
R
P
i_
13
R
P
i_
14
R
P
i_
15
R
P
i_
16
R
P
i_
17
R
P
i_
18
R
P
i_
19
R
Pi
_2
0
R
Pi
_2
1
R
Pi
_2
2
R
P
i_
23
R
P
i_
24
R
Pi
_2
5
R
Pi
_2
6
R
P
i_
27
NINA
Module
User
RGB LED
User
buttons
Reset
button
NINA
SWD conn.
NINA signal
jumper header
SWD
UART
UART
COM port
pin header
Power selector
jumper headers
USB
USB
USB
3.3 V
3.3 V
SPI
20-pin Trace
connector
ETM/ITM
Trace
USB
NFC
RF
VBUS
VBUS
CR2032
3 V
5 - 12 V
NINA COM port
NINA program & debug
Additional COM port
1.7 - 3.6 V
Raspberry Pi pin
NINA Open CPU function
NINA Open CPU function
Arduino pin
NINA Connectivity Software function
NINA Connectivity Software function
D10 and D11
are optional
