May 2015
DocID026260 Rev 3
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X-NUCLEO-IDB04A1
Bluetooth low energy expansion board based on BlueNRG for
STM32 Nucleo
Data brief
Features
BlueNRG low power, low energy Bluetooth
network coprocessor
BALF-NRG-01D3 balun & harmonic filter
Free comprehensive development firmware
library and example for BlueNRG,
compatible with STM32Cube firmware
Bluetooth low energy 4.0 master and slave
compliant
Compatible with STM32 Nucleo boards
Equipped with Arduino UNO R3 connector
Very low power consumption: 7.3 mA RX
and 8.2 mA TX at +0 dBm
Maximum transmission power: +8 dBm
Excellent receiver sensitivity (-88 dBm)
X-NUCLEO-IDB04A1 is FCC certified (FCC
ID: S9NIDB04A1)
X-NUCLEO-IDB04A1 is officially certificated
as a BTLE 5mW module for Japan Radio
Law “TYPE” Certification by Japan
government
RoHS compliant
Description
The X-NUCLEO-IDB04A1 is a Bluetooth low
energy evaluation board to allow expansion of
the STM32 Nucleo boards. It is compatible with
the Arduino UNO R3 connector layout, and is
designed around BlueNRG, a Bluetooth low
energy, low power network coprocessor
compliant with BTLE 4.0 and the BALF-NRG-
01D3, an ultra miniature balun optimized for ST
BlueNRG RF IC, which integrates matching
network and harmonics filter. The X-NUCLEO-
IDB04A1 interfaces with the STM32 MCU via SPI
pin, and the user can change the default SPI
clock, the SPI chip select and SPI IRQ by
changing one resistor on the evaluation board.
The excellent performance of BlueNRG and the
best matching between BlueNRG and BALF-
NRG-01D3, X-NUCLEO-IDB04A1 passed the RF
TEST for Japan Radio Law certification with
higher margin above the specification values as
well as it is FCC certified (FCC ID: S9NIDB04A1).
Formal Notices Required by the U.S. Federal
Notices Required by the U.S. Federal
Communications Commission (“FCC”)
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DocID026260 Rev 3
1 Formal Notices Required by the U.S. Federal Notices
Required by the U.S. Federal Communications
Commission (“FCC”)
Any changes or modifications to this equipment not expressly approved by
STMicroelectronics may cause harmful interference and void the user’s authority to operate
this equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including any interference that may
cause undesired operation. This device uses, generates and radiated radio frequency
energy. The radio frequency energy produced by this device is well below the maximum
exposure allows by Federal Communications Commission (FCC). The X-NUCLEO-
IDB04A1 is FCC certified (FCC ID: S9NIDB04A1).
Figure 1: Functional block diagram
GSPG1105150930SG
PCB Antenna
Antenna tuning circuit
(BALF-NRG-01D3)
STM32L
Microcontroller
JTAG Connector
BlueNRG
SPI Bus
(2Mbps)
32MHz
32MHz
X-NUCLEO-IDB04A1
Schematic diagram
DocID026260 Rev 3
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2 Schematic diagram
Figure 2: Circuit schematic
Solder a 10u_0805 between 1-2
or a 0R0_0805 between 1-3
Male Connector 2x5
PCB Meander Antenna
Not mounted
Not mounted
Not mounted
Not mounted
VBAT1
VBAT1
NO_SMPS
NO_SMPS
nS
CLK
MOSI
MISO
RST
MOSI
CLK
IRQ
MISO
CSN
VBAT2VBAT3
TEST10
VBAT3
TEST5
TEST6
TEST7
TEST4
TEST10
TEST5
TEST4
TEST6
TEST7
VBAT2
TEST8
TEST8
TEST9
MOSI
MISO
nS
RST
CLK
CLK
IRQ
CSN
CSN
IRQ
TEST9
TEST1
TEST1
VDD
VDDVDD
VDD
VDD
3V3
VDD
VDD
3V3VDD
U5
Jumper2
1
122
C15
100p_0402_COG
C23
100n_0402_X7R
R3
nc
C14
15p_0402_COG
R1
nc
R13
0
U4
BALF-NRG-01D3
B1
4
B2
3A2 2
A1 1C27
56p
R17 0
R6
nc
L4
TBD_0402
Q1
LF-XTAL
R4
nc
R7
100k_0402
C5
22p_0402_COG
TEST9
JP1
TEST10
1
2
3
C22
1u_0402_X5R
J2 U.FL connector
GND
1
SIG 2
GND3
D1
1
2
3
L1 TBD_0402
CN6
CON8
1
2
3
4
5
6
7
8
C4
150n_0402_X5R
C21
100n_0402_X7R
C17
1u_0402_X5R
R16
0
BlueNRG
U1
SPI_MOSI
1
SPI_CLK
2
SPI_IRQ
3
TEST1
4
VBAT3
5
TEST2
6
TEST3
7
TEST4
8
TEST5 9
TEST6 10
TEST7 11
VDD1V8 12
FXTAL0 18
FXTAL1 17
TEST12 16
TEST11 15
TEST9 14
TEST8 13
VBAT124
SXTAL0 23
SXTAL1 22
RF021
RF120
VBAT219
GND
33
RESETN
25 SMPSFILT1
26 NO_SMPS
27 SMPSFILT2
28 VDD1V2
29 TEST10
30 SPI_CS
31 SPI_MISO
32
L2 TBD_0402
C2456p
R14
0
C13
15p_0402_COG
C2
100n_0402_X7R
C1
1u_0402_X5R
CN5
CON10
1
2
3
4
5
6
7
8
9
10
C18
100n_0402_X7R
C19
100n_0402_X7R
R11
0
CN9
CON8
1
2
3
4
5
6
7
8
J1
Test connector
1
23
45
67
89
10
C26
TBD_0402_COG
C6
22p_0402_COG
R2
10k_0402
R10
0
C20
1u_0402_X5R
R5
nc
C25
TBD_0402_COG
CN8
CON6
1
2
3
4
5
6
C16
100n_0402_X7R
C3
100p_0402_COG
Q2
HF-XTAL
R9
100k_0402
U3
M95640
nS
1
Q
2
nW
3
Vss
4
Vcc8
nHOLD 7
C6
D5
TEST8
R12 0
R150
GSPG1105151045SG
Revision history
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DocID026260 Rev 3
3 Revision history
Table 1: Document revision history
Date
Rev
Changes
08-May-2014
1
First release.
01-Dec-2014
2
Features and Description in cover page have been updated.
20-May-2015
3
Added new Section 1.
X-NUCLEO-IDB04A1
DocID026260 Rev 3
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