NINA-B2 series - System Integration Manual
UBX-18011096 - R03
Contents
Page 5 of 30
1
System description
1.1
Overview
The NINA-B2 series are small stand-alone dual-mode Bluetooth modules designed for ease-of-use
and integration in professional applications where security is important. The modules are delivered
with u-blox connectivity software, which provides support for both peripheral and central roles,
Serial Port Profile, GATT client and server, beacons, u-blox Bluetooth low energy Serial Port Service –
all configurable from a host using AT commands.
NINA-B222 comes with an internal antenna while NINA-B221 has a pin for use with an external
antenna. The internal PIFA antenna is specifically designed for the small NINA form factor and
provides an extensive range, independent of ground plane and component placement.
1.1.1
Block diagram
Figure 1: Block diagram of NINA-B2 series
Flash (16Mbit)
Linear voltage regulators
RF
ROM
IO
B
u
ffe
rs
2
xX
te
n
sa 32
-b
it
L
X
6
M
CU
S
RAM (4Mbit)
Cryptographics
hardware
accelerations
Antenna
(NINA-B222)
PLL
Quad SPI
VCC_IO
VCC (3.0- 3.6V)
40 MHz
Reset
UART
EFUSE
GPIO
BPF
ANT (NINA-B221)
Bluetooth
baseband
