ST X-NUCLEO-IDB04A1 User manual

February 2015 DocID026346 Rev 3 1/13
UM1765
User manual
X-NUCLEO-IDB04A1 Bluetooth low energy expansion board
based on BlueNRG for STM32 Nucleo
Introduction
This document provides detailed hardware requirements and board connections for the X-
NUCLEO-IDB04A1 Bluetooth
®
low energy (BLE) evaluation board based on BlueNRG for
STM32 Nucleo. This board is part of STMicroelectronics’ offering of evaluation boards
designed around the BlueNRG Bluetooth low energy wireless network processor.
Figure 1. X-NUCLEO-IDB04A1 evaluation board
Other BlueNRG evaluation boards are available in the following kits:
•STEVAL-IDB002V1: BlueNRG development platform
•STEVAL-IDB003V1: BlueNRG USB dongle
www.st.com

Contents UM1765
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Contents
1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 X-NUCLEO-IDB04A1 board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1.1 Current measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 List of acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Board schematic and bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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UM1765 Getting started
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1 Getting started
This section describes the hardware requirements for the X-NUCLEO-IDB04A1 evaluation
board.
1.1 Hardware requirements
The X-NUCLEO-IDB04A1 is an expansion board for use with STM32 Nucleo boards (please
refer to UM1724 on www.st.com for further information). To function correctly, the STM32
Nucleo board must be connected to the X-NUCLEO-IDB04A1 board as shown in Figure 2
below.
Figure 2. X-NUCLEO-IDB04A1 connected to STM32 Nucleo board
The interconnection between the STM32 Nucleo and the X-NUCLEO-IDB04A1 has been
designed to permit the use of any STM32 Nucleo board, although the optimal combination is
obtained using the NUCLEO-L152RE or NUCLEO-L053R8 hosting the ultra-low power
STM32.

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1.2 System requirements
Using the Nucleo boards with the X-NUCLEO-IDB04A1 expansion board requires the
following software and hardware:
•a Windows PC (XP, Vista, 7, 8) to install the software package
•a USB type A to Mini-B USB cable to connect the Nucleo to the PC
Installation of the board firmware package (order code: X-CUBE-BLE1) and the BlueNRG
graphical user interface utility on the user’s PC requires the following:
•At least 128 MB of RAM
•40 MB of hard disk space available
The X-CUBE-BLE1 firmware and related documentation is available on st.com.

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UM1765 Hardware description
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2 Hardware description
This section describes the X-NUCLEO-IDB04A1 features and provides information which
could be useful for understanding the board schematics.
2.1 X-NUCLEO-IDB04A1 board
The board allows the user to test the functionality of the BlueNRG processor. It hosts the
innovative BALF-NRG-01D3 balun & harmonic filter and its functionality can be exploited
using the firmware package contained in the X-CUBE-BLE1. It is fundamental to program
the microcontroller on the STM32 Nucleo board. Please refer to user manuals UM1724 and
UM1725, available on www.st.com.
The BlueNRG processor and the STM32 Nucleo board are connected through connectors
CN5, CN6, CN8 and CN9 (see Table 1 for details). The pins indicated with an asterisk (*)
represent an alternative pin for that specific function, i.e. SPI_IRQ could be moved from
CN8.1 to CN5.2.
To change the default pin SPI_CLK and SPI_IRQ, the user must disassemble, respectively,
R10 and R12, and assemble R11 and R16.
Table 1. Interconnection between STM32 Nucleo board and X-NUCLEO-IDB04A1
NC IOREF RESET 3V3 5V GND GND VIN A0 A1 A2 A3 A4 A5
Left connectors
12345678 123456
3V3 GND GND SPI_IRQ SPI_CSN
D15 D14 AREF GND D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Right connectors
CN5 digital CN9 digital
1098765432187654321
GND SPI_CLK* SPI_MISO SPI_MOSI SPI_IRQ* SPI_MCSN BNRG_RST SPI_CLK

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The board also includes:
– a high frequency 16 MHz crystal
– a low frequency 32 kHz crystal for lowest power consumption
– a BALF-NRG-01D3 balun & harmonic filter
– an EEPROM M95640 to store the board parameters
Not mounted:
– a JTAG connector to program the BlueNRG processor
– an SMA connector for the external antenna
2.1.1 Current measurements
To monitor the power consumption of entire BlueNRG X-NUCLEO-IDB04A1 board, jumper
U5 can be used, inserting an ammeter probe between pins 1 and 2 of the connector. Since
the power consumption of BlueNRG during most of its operating time is very low, an
accurate instrument in the range of few microamps may be required.

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3 List of acronyms
Table 2. List of acronyms used in the document
Term Meaning
BLE Bluetooth low energy
USB Universal serial bus

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4 Board schematic and bill of material
Table 3. Bill of materials (part 1)
Item Quantity Reference Part Note
1 4 C1, C17, C20, C22 1u_0402_X5R VBAT & SMPS OUT filter cap
2 6 C2, C16, C18, C19, C21, C23 100n_0402_X7R VBAT filtering
3 2 C3, C15 100p_0402_C0G VBAT filtering
4 1 C4 150n_0402_X5R VREG filtering
5 2 C5, C6 22p_0402_C0G 32 kHz XTAL load cap
6 1 C27 56p_0402_C0G TX/RX balun cap
7 1 C24 56p_0402_C0G TX/RX bypass cap
8 1 C25 TBD_0402_COG Tuning cap
9 1 C26 TBD_0402_COG Tuning cap
10 1 L4 TBD_0402 Tuning cap
11 2 C13, C14 15p_0402_C0G 16 MHz XTAL load cap
12 1 D1 Soldered between pins 1
and 2 SMPS out inductor
13 1 JP1 HEADER 1X3 Male strip 1X3, 100 mils
14 1 J1 THR 1.27 mm 2x5 pins Test connector
15 1 J2 RF_IN/OUT UFL jack assembly, End Launch
16 1 U4 BALF-NRG-01D3 Integrated balun for BlueNRG
QFN32
17 1 CN5 Extra-long 10 pins
female-male strip Female side mounted to the top
18 2 CN6, CN9 Extra-long 8 pins female-
male strip Female side mounted to the top
19 CN8 Extra-long 6 pins female-
male strip Female side mounted to the top
20 1 Q1 XTAL XTAL
21
(1)
1 Q2 XTAL XTAL

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UM1765 Board schematic and bill of material
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22 5 R1, R3, R4, R5, R6 Connect to V
DD
, pull-down
23 1 R2 10k_0402 Connect to ground
24 2 R7, R9 100k_0402 Pull-up and pull-down
25 4 R10, R12, R14, R15 0_0402 jumper-resistor
26 3 R11, R13, R16 0_0402 jumper-resistor
27 1 U1 BlueNRG RF IC
28 1 U5 HEADER 1X2 Male strip 1X2, 100 mils
27 1 U3 EEPROM Memory
28 3 TEST8, TEST11,TEST12 Test point Test point
1. First release of the board mount 16MHz X'tal, however ST suggests to use 32MHz to exploit at best all the functionalities of
BlueNRG.
Table 3. Bill of materials (part 1) (continued)
Item Quantity Reference Part Note
Table 4. Bill of materials (part 2)
Item Package Manufacturer Manufacturer’s ordering code /
orderable part number +8 dBm
1 SM/C_0402 Murata GRM155R61A105KE15 1 uF
2 SM/C_0402 Murata GRM155R71C104KA88 100 nF
3 SM/C_0402 Murata GRM1555C1H101JZ01 100 pF
4 SM/C_0402 Murata GRM155R61A154KE19 150 nF
5 SM/C_0402 Murata GRM1555C1H220JZ01 22 pF
6 SM/C_0402 Murata GRM1555C1H560JA01 56 pF
7 SM/C_0402 Murata NE
8 SM/C_0402 Murata GRM1555C1H120JZ01 1.2 pF
9 SM/C_0402 NE
10 SM/C_0402 Murata GRM1555C1H180JZ01 1.8 pF
11 SM/C_0402 Murata GRM1555C1H150JZ01 15 pF
12 SM/L_0805 Murata LQM21FN100M70L 10 uH
13 WALCON.100/VH/TM2
OE/W.325/10/MOD

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14 SAMTEC FTSH-105-01-F-D-K NE
15 SMT Hirose U.FL-R-SMT-1(10) Digikey
H11891CT-ND NE
16 STMicroelectronics BALF-NRG-01D3
17 2.54 mm pitch 4UCON 18688
18 2.54 mm pitch 4UCON 18688
19 2.54 mm pitch 4UCON 18688
20 NX3215SA NDK NX3215SA-32.768kHz-EXS00A-
MU00003 32.768 kHz
21
(1)
XTAL_32_25_REV2 NDK NX3225SA -16.000MHz-EXS00A-
CS05997 16 MHz
22 SM/R_0402 Tyco Electronics NE
23 SM/R_0402 Tyco Electronics 10 k
24 SM/R_0402 Tyco Electronics 100 k
25 SM/R_0402 Tyco Electronics 0 Ohm
26 SM/R_0402 Tyco Electronics NE
27 QFN32 STMicroelectronics
28 WALCON.100/VH/TM2
OE/W.325/10/MOD
27 SO8N STMicroelectronics M95640-RMN6
28 TP NE
1. First release of the board mount 16MHz X'tal, however ST suggests to use 32MHz to exploit at best all the functionalities of
BlueNRG.
Table 4. Bill of materials (part 2) (continued)
Item Package Manufacturer Manufacturer’s ordering code /
orderable part number +8 dBm