ST Microelectronics S R L SPBT40DP SPBT4.0DP Bluetooth Dual Radio Module User Manual SPBT40DP Datasheet r0 15 Rizzoli
ST Microelectronics S.R.L. SPBT4.0DP Bluetooth Dual Radio Module SPBT40DP Datasheet r0 15 Rizzoli
Datasheet

July 
 2015  DocID0xxxxx Rev 0.15   
This is preliminary information on a new product now in development or undergoing   evaluation.  Details are subject to change  
without notice. www.st.com
SPBT4.0DP
Bluetooth® Smart Ready 
module
Datasheet – preliminary data
Features
• 
•
Bluetooth® radio 
o  Fully  embedded  Bluetooth®  v4.0  
with SPP and Low Energy profiles 
o  Embedded support for MFI iAP2 profile 
o  Class 2 module 
o  Complete RF ready module 
o  128-bit encryption security 
o  Integrated antenna 
•  ST micro Cortex-M4 microprocessor  
o  up to 104 MHz  
o  512 KB Flash 
o  128 KB RAM memory 
•  Supported transmission speed with SPP 
o  Up to 800KBits 
•  General I/O 
o  8 general purpose I/Os 
•  User interface 
o  AT command Data Package (DP) 
o  Firmware upgrade over UART 
•  ETSI, FCC, IC and Bluetooth® qualified 
•  Single voltage supply: 3.3 V typical 
•  Micro-sized form factor: 11.6 x 13.5 x 2.9 mm 
•  Operating temperature range: -40 °C to 85 °C 

Contents 
1 Description .......................................................................................................................... 5 
2 RoHS compliance ................................................................................................................ 6 
3 Applications ......................................................................................................................... 6 
4 Software architecture .......................................................................................................... 7 
4.1 BT stack layers ................................................................................................................. 7 
4.2 Supported Profile ............................................................................................................. 7 
4.3 AT Command DATA PACKAGE ....................................................................................... 7 
5 Hardware specifications...................................................................................................... 8 
5.1 Recommended operating conditions .............................................................................. 8 
5.2 Absolute maximum ratings .............................................................................................. 8 
5.3 Modulei current absorption ............................................................................................. 8 
5.4 Pin assignment ................................................................................................................. 9 
5.5  Mechanical dimensions ................................................................................................. 10 
6 Hardware design .................................................................................................................... 12 
6.1 Reflow soldering ............................................................................................................. 12 
6.2 UART interface ............................................................................................................... 14 
7 Regulatory compliance ..................................................................................................... 15 
7.1 FCC  certification ............................................................................................................ 15 
7.1.1 Labeling instructions ............................................................................................... 15 
7.1.2 Product manual instructions ................................................................................... 16 
7.2 IC certification ................................................................................................................. 17 
7.2.1 Labeling instructions ............................................................................................... 17 
7.2.2 Product manual instructions ................................................................................... 18 
7.3 Bluetooth certification .................................................................................................... 19 
7.4 CE certification ............................................................................................................... 19 
8 
Traceability
 ......................................................................................................................... 20 
9 Ordering information ......................................................................................................... 21 
10 Revision history ................................................................................................................. 22 

List
of
tables
3 | P a g e  
List of tables 
Table 1.  Recommended operating conditions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8 
Table 2.  Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8 
Table 3.  Pin 
assignment 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9 
Table 4.  Soldering . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 
Table 5.  Traceability information. . . .  . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Table 6.  Ordering 
information 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 
Table 7.  Document revision history  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 

List
of
figu
r
es
4 | P a g e  
List of figures 
Figure 1.  Pin connection  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9 
Figure 2.  Mechanical dimensions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 
Figure 3.  Recommend land pattern top view   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 
Figure 4.  Soldering profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 
Figure 5.  Connection to host device  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 
Figure 6.  Typical RS232 circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 

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1  Description 
The SPBT4.0DP  is an easy to use Bluetooth Smart Ready module, compliant with Bluetooth 
v4.0.  
The  module  is  among  the  smallest  form  factor  available  which  provides  a  complete  RF 
platform.  The  SPBT4.0DP  enables  electronic  devices  with  wireless  connectivity,  not 
requiring  any  RF  experience  or  expertise  for  integration  into  the  final  product.  The 
SPBT4.0DP   module, being a  certified solution, optimizes the  time to  market of  the  final 
applications. 
The module is designed for maximum performance in a minimal space including fast speed 
UART and 8 general purpose I/O lines, several serial interface options, and up to 800 kbps 
transmission speed with SPP service active, 250kbps with iAP2 service active. 
Optimized design allows the integration of a complete working Bluetooth modem, including 
antenna,  in  the  minimum  possible  size;  only  an  additional  external  LPO  (low  power 
oscillator) is required to enable low power mode capability. 
The SPBT4.0DP  is a surface mount PCB module that provides fully embedded, ready to 
use  Bluetooth  wireless  technology.  The  reprogrammable  Flash  memory  contains 
embedded  firmware  for  serial  cable  replacement  using  the  Bluetooth  SPP  profile. 
Embedded Bluetooth DATA PACKAGE (DP) firmware is a friendly interface, which realizes a 
simple control for cable replacement. The SPBT4.0DP supporting SPP, iAP2 and Bluetooth 
Low  Energy proprietary Data  Exchange  profiles,  it  provides communication with  Android, 
smartphone, and the newest Apple
® 
iOS Bluetooth enabled devices.  
An Apple authentication IC is required to exchange data with an Apple device or access an 
Apple  device  application.  The  DP  FW  includes  the  Bluetooth  iAP2  profile  capable  of 
recognizing the Apple authentication chip. 
Customers using the Apple authentication IC must register as developers to become an 
Apple  certified  MFI  member.  License  fees  may  apply,  for  additional  information visit: 
http://developer.apple.com/programs/which-program/index.html. 
Certified MFI developers developing electronic accessories that connect to the iPod
®
, 
iPhone
®
, and iPad
® 
gain access to technical documentation, hardware components, 
technical support and certification logos. 
Customized  firmware  for  peripheral  device  interaction,  power  optimization,  security,  and 
other proprietary features may be supported and can be ordered pre-loaded and configured. 

6 | P a g e  
2  RoHS compliance 
ST Bluetooth modules comply with the ECOPACK2 level of RoHS compliance grade.  
3  Applications 
The SPBT4.0DP  is suitable for a wide range of application like: 
•
  Serial cable replacement 
•
  M2M industrial control 
•
  Service diagnostic 
•
  Data acquisition equipment 
•
  Machine control 
•
  Sensor monitoring 
•
  Security system 
•
  Mobile health 

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4  Software architecture 
4.1  BT stack layers 
•
  Bluetooth v4.0 
•
  Device power modes: active, sleep and deep sleep 
•
  Wake on Bluetooth feature optimized power consumption of host CPU 
•
  Authentication and encryption 
•
  Encryption key length from 8 bits to 128 bits 
•
  Persistent Flash memory for BD address and user parameter storage 
•
  All ACL (asynchronous connection less) packet types 
•
  Sniff mode: fully supported to maximum allowed intervals 
•
  Master slave switch supported during connection and post connection 
•
  Dedicated inquiry access code for improved inquiry scan performance 
•
  Dynamic packet selection channel quality driven data rate to optimize link performance 
•
  Dynamic power control 
•
  Bluetooth radio natively supports 802.11b co-existence AFH 
•
  RFCOMM, SDP, and L2CAP supported 
4.2  Supported Profile 
Bluetooth Classic: 
•  Serial Port Profile (SPP)  
•  iPOD Accessory Protocol 2 (iAP2) 
Bluetooth Low Energy: 
•
  Proprietary Data Exchange Profile (DEP)  
4.3  AT Command DATA PACKAGE 
The complete command list  is reported in the AT Command DATA PACKAGE user manual. 

8 | P a g e  
5  Hardware specifications 
General conditions (V
IN 
= 3.3 V and 25 
°C).
5.1  Recommended operating conditions 
Table 1. Recommended operating conditions 
Rating
Min.
 Typical 
Max.
Unit
Operating temperature range 
-40
-
         + 85
°C
Supply voltage 
V
IN
2.3
3.3
3.6
V
Signal pin voltage 
-
2.1
-
V
RF frequency 
2402
-
  2480 
MHz
5.2  Absolute maximum ratings 
Table 2. Absolute maximum ratings 
Rating
Min.
 Typical 
Max.
Unit
Storage temperature range 
-40
-
+  85
°C
Supply voltage, 
V
IN
-0.3
-
  + 
5.5
V
I/O pin voltage, 
V
IO
-0.3
  +2.1    +5 
V
RF max. input power GFSK 
-
-
10
dBm
RF max. input power DQPSK 
-
-
6
dBm
RF max. input power DPSK 
-
-
-3
dBm
5.3  Module current  absorption (Average & Typical) 
Table 3. Module average D.C. current absorption 
Test Conditions
Min.
Typical
Max.
Unit
CPU = 84Mhz 
IDLE STATE 
(WAIT FOR  COMMANDS) 
10.62
mA
CPU = 84Mhz 
Tx (65500kb/s) 
 Transmission state 
(Continuos Transmission) 
37
mA
CPU = 84Mhz 
Rx (35500kb/s) 
Receiving state
27
mA

9 | P a g e  
5.4  Pin assignment  
Figure 1. Pin connection  
Table 4. Pin 
assignment
Pin  Name  Description  I/O  Note 
1  GPIO1_BTCS  GPIO indicating BT Connection Status 
-  When high, BT connection is active 
-  When low, BT connection is not active 
O   
2  GPIO2  General purpose I/O  I/O  5V tolerant 
3  GPIO3  General purpose I/O  I/O  5V tolerant 
4  GPIO4_MLPS  GPIO indicating Module Low Power Status 
-  When high, device is in active mode 
-  When low, device is in low power mode 
O   
5  GPIO5   General purpose I/O   I/O  5V tolerant 
6  GPIO6   General purpose I/O   I/O  5V tolerant 
7  GND  Reference ground  NA   
8  Vin  Main power supply input   NA   
9  Boot 0  Boot 0 pin  I  5V tolerant 
10  RESETn  Reset input (active low for 5ms)  I   
11  CTS /  I2C SCL  Request to send (active low) or I2C_SCL line for MFI 
chip  I   
12  RTS / I2C SDA  Clear to send (active low) or I2C_SDA line for MFI chip  O  5V tolerant 
13  RXD  Receive Data  I  5V tolerant 
14  TXD  Transmit Data  O   
15  LPO  Low power 32KHz oscillator input  I   
16  GPIO7  General purpose I/O  I/O  5V tolerant 
17  GPIO8  General purpose I/O  I/O  5V tolerant 
18  +2.1V OUT  +2.1V out (max 10mA)  NA   

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5.5   Mechanical dimensions 
Figure 2. Mechanical dimensions 

11 | P a g e  
Figure 3. Recommend land pattern top view 

12 | P a g e  
6 Hardware design  
SPBT4.0DP  module with DP command embedded FW supports UART, I
2
C and GPIO 
hardware interfaces.  
Note: -  All unused pins should be left floating; do not ground.  
•  All GND pins must be well grounded.  
•  The area around the module should be free of any ground planes, power planes, trace 
routings, or metal for 6 mm from the module antenna position, in all directions.  
•  Traces should not be routed underneath the module.  
6.1 Reflow soldering  
The SPBT4.0DP is a high temperature strength surface mount Bluetooth
®
 module supplied on 
an 18 pin, 6-layer PCB. The final assembly recommended reflow profiles are indicated here 
below.  
Soldering  phase  must  be  executed  with  care:  in  order  to  avoid  undesired  melting 
phenomenon, particular attention must be paid to the set-up of the peak temperature.  
Here  following  some  suggestions  for  the  temperature  profile  based  on  the  following 
recommendations.  
Table 5. 
Soldering 
Profile 
feature
 PB-free assembly 
Average ramp-up rate (T
SMAX 
to 
T
P
)
 3 °C/sec max 
Preheat: 
– Temperature min. (T
S 
min.) 
– Temperature max. (T
S 
max.) 
– Time (t
s 
min. to t
s 
max.)(t
s
) 
150 
°C
200 
°C
60-100 
sec
Time maintained above: 
– Temperature 
T
L
– Temperature 
T
L
217 
°C
60-70 
sec
Peak temperature (T
P
)  240 + 0 
°C
Time within 5 °C of actual peak temperature (T
P
)  10-20 
sec
Ramp-down rate  6 
°C/sec
Time from 25 °C to peak temperature  8 minutes max. 

13 | P a g e  
Figure 4. Soldering profile  
$012026Y1

14 | P a g e  
6.2  UART interface 
The UART is compatible with the 16550 industry standard. Four signals are provided with 
the UART interface. The TXD and RXD pins are used for data while the CTS and RTS pins 
are used for flow control. 
Figure 5. Connection to host device 
Host 
Bluetooth
module
$012027Y1
Figure 6. Typical RS232 circuit 
$012028Y1

15 | P a g e  
7  Regulatory compliance 
7.1  FCC  certification 
This module has been tested and found to comply with the FCC part 15 rules. These limits are 
designed to provide reasonable protection against harmful interference in approved 
installations. This equipment generates, uses, and can radiate radio frequency energy and, if 
not installed and used in accordance with the instructions, may cause harmful interference to 
radio communications.  
However, there is no guarantee that interference may not occur in a particular installation.  
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 interference that may cause 
undesired operation.  
Modifications or changes to this equipment not expressly approved by STMicroelectronics 
may render void the user's authority to operate this equipment.  
Modular approval  
FCC ID: S9NSPBT40DP  
In accordance with FCC part 15, the SPBT4.0DP is listed as a modular transmitter device.  
This module is evaluated for stand-alone use only. Finished products incorporating multiple 
transmitters must comply with colocation and RF exposure requirements in accordance with 
FCC multi-transmitter product procedures. Collocated transmitters operating in portable RF 
Exposure conditions (e.g. <20 cm from persons including but not limited to body worn and 
hand held devices) may require separate approval.  
7.1.1 Labeling instructions  
When integrating the SPBT4.0DP  into the final product, the OEM must ensure that the FCC 
labeling requirements are satisfied. A statement must be included on the exterior of the final 
product which indicates the product includes a certified module. The label should state the 
following (or similar wording that conveys the same meaning):  
Contains FCC ID: S9NSPBT40DP  
OR  
This product contains FCC ID: S9NSPBT40DP  
The OEM must include the following statements on the exterior of the final product unless 
the product is too small (e.g. less than 4 x 4 inches)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.  

16 | P a g e  
7.1.2 Product manual instructions  
This section applies to OEM final products containing the SPBT4.0DP  module, subject to 
FCC compliance. The final product manual must contain the following statement (or a similar 
statement that conveys the same meaning):  
Warning: Changes or modifications not expressly approved by the party responsible for 
compliance could void the user's authority to operate the equipment. (Part. 15.21)  
In the case where an OEM seeks Class B (residential) limits for the final product, the 
following statement must be included in the final product manual:  
Note:       This equipment has been tested and found to comply with the limits for a Class B digital device, 
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable 
protection against harmful interference in a residential installation. This equipment generates, 
uses and can radiate radio frequency energy and, if not installed and used in accordance with 
the instructions, may cause harmful interference to radio communications. However, there is 
no guarantee that interference will not occur in a particular installation. If this equipment does 
cause harmful interference to radio or television reception, which can be determined by 
turning the equipment off and on, the user is encouraged to try to correct the interference by 
one or more of the following measures:  
•  Reorient or relocate the receiving antenna.  
•  Increase the separation between the equipment and receiver.  
•  Connect the equipment into an outlet on a circuit different from that to which the receiver is 
connected.  
•  Consult the dealer or an experienced radio/TV technician for help.  
 In the case where an OEM seeks the lesser category of a Class A digital device for the final 
product, the following statement must be included in the final product manual:  
Note:       This equipment has been tested and found to comply with the limits for a Class A digital device, 
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable 
protection against harmful interference when the equipment is operated in a commercial 
environment. This equipment generates, uses, and can radiate radio frequency energy and, if 
not installed and used in accordance with the instruction manual, may cause harmful 
interference to radio communications. Operation of this equipment in a residential area is 
likely to cause harmful interference in which case the user will be required to correct the 
interference at his expense.  

17 | P a g e  
7.2 IC certification  
The SPBT4.0DP module has been tested and found compliant with the IC RSS-210 rules. 
These limits are designed to provide reasonable protection against harmful interference in 
approved installations. This equipment generates, uses, and can radiate radio frequency 
energy and, if not installed and used in accordance with the instructions, may cause harmful 
interference to radio communications.  
However, there is no guarantee that interference may not occur in a particular installation.  
This device complies with RSS-210 of the IC 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 interference that may cause 
undesired operation.  
 Modifications or changes to this equipment not expressly approved by STMicroelectronics 
may render void the user's authority to operate this equipment.  
Modular approval  
IC: 8976C-SPBT40DP 
In accordance with IC RSS-210, the SPBT4.0DP is listed as a modular transmitter device.  
This module is evaluated for stand-alone use only. Finished products incorporating multiple 
transmitters must comply with colocation and RF exposure requirements in accordance with 
IC multi-transmitter product procedures. Collocated transmitters operating in portable RF 
Exposure conditions (e.g. <20cm from persons including but not limited to body worn and 
hand held devices) may require separate approval.  
7.2.1 Labeling instructions  
When integrating the SPBT4.0DP  into the final product, the OEM must ensure that the IC 
labeling requirements are satisfied. A statement must be included on the exterior of the final 
product which indicates that the product includes a certified module. The label should state 
the following (or similar wording that conveys the same meaning):  
Contains IC: 8976C-SPBT40DP   OR   This product contains IC: 8976C-SPBT40DP  
The OEM must include the following statements on the exterior of the final product unless 
the product is too small (e.g. less than 4 x 4 inches):  
This device complies with RSS-210 of the IC 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.  

18 | P a g e  
7.2.2 Product manual instructions  
This section applies to OEM final products containing the SPBT4.0DP  module, subject to IC 
compliance. The final product manual must contain the following statement (or a similar 
statement that conveys the same meaning):  
Warning: Changes or modifications not expressly approved by the party responsible for 
compliance could void the user's authority to operate the equipment. (RSS-210)  
In the case where an OEM seeks Class B (residential) limits for the final product, the 
following statement must be included in the final product manual:  
Note:       This equipment has been tested and found to comply with the limits for a Class B digital device, 
pursuant to RSS-210 of the IC Rules. These limits are designed to provide reasonable 
protection against harmful interference in a residential installation. This equipment generates, 
uses and can radiate radio frequency energy and, if not installed and used in accordance with 
the instructions, may cause harmful interference to radio communications. However, there is 
no guarantee that interference will not occur in a particular installation. If this equipment does 
cause harmful interference to radio or television reception, which can be determined by 
turning the equipment off and on, the user is encouraged to try to correct the interference by 
one or more of the following measures:  
•  Reorient or relocate the receiving antenna.  
•  Increase the separation between the equipment and receiver.  
•  Connect the equipment into an outlet on a circuit different from that to which the receiver is 
connected.  
•  Consult the dealer or an experienced radio/TV technician for help.  
 In the case where an OEM seeks the lesser category of a Class A digital device for the final 
product, the following statement must be included in the final product manual:  
Note:       This equipment has been tested and found to comply with the limits for a Class A digital device, 
pursuant to RSS-210 of the IC Rules. These limits are designed to provide reasonable 
protection against harmful interference when the equipment is operated in a commercial 
environment. This equipment generates, uses, and can radiate radio frequency energy and, if 
not installed and used in accordance with the instruction manual, may cause harmful 
interference to radio communications. Operation of this equipment in a residential area is 
likely to cause harmful interference in which case the user will be required to correct the 
interference at his expense.  

19 | P a g e  
7.3 Bluetooth certification 
Module with embedded stack and profile has been qualified according to SIG qualification 
rules: 
–  Bluetooth SIG Declaration ID: zzzzzz 
–  Product type: End Product 
–  Core spec version: 4.0 
–  Product descriptions: Bluetooth module, spec V4.0 
7.4  CE certification 
Module has been certified according to following certification rules: 
–  CE Expert opinion: 0564-ARSP00100 
–  Measurements have been performed in accordance with (report available on 
request): 
–  EN 300 328 v 1.8.1 (2012-06) ; v1.9.1 (2015-02)
–  EN 301 489-17 V 2.2.1 (2012-09) 
-–  EN 62479 (2010-09) 
 -–  EN60950- 1:2006 + A11:2009 + A1:2010 + A12:2011 + A2:2013 
CE certified: 

20 | P a g e  
8 
Traceability
Each module is univocally identified by serial number stored in a 2D data matrix laser 
marked on the bottom side of the module itself. 
The serial number has the following format:  WW YY D FF NNN  
Table 5. Traceability information 
Letter  Meaning  
WW  week 
YY  year 
D  Product ID number 
FF  Production panel coordinate identification  
NN  Progressive serial number 
Each module bulk is identified by a bulk ID. 
BULK ID and module 2D data matrix are linked by a reciprocal traceability link. 
The module 2D data matrix traces the lot number of any raw material used. 

21 | P a g e  
9  Ordering information 
Table 6. Ordering information 
Order code 
Description
 Packing 
MOQ
SPBT4.0DP   Class 2 OEM Bluetooth antenna module
Jedec tray  2448 pcs 

22 | P a g e  
10  Revision history 
Table 7. Document revision history 
Date
 Revision 
    Changes
07-July- 2015 
0.14
  First release. 
31 – July - 2015 
0.15 
Modified table 3 

23 | P a g e  
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