Telit Wireless Solutions BlueMod+S42M Installation manual

BlueMod+S42M
Hardware User Guide
1VV0301379 Rev. 4 –2018-11-28

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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
NOTICE
While reasonable efforts have been made to assure the accuracy of this document, Telit
assumes no liability resulting from any inaccuracies or omissions in this document, or from
use of the information obtained herein. The information in this document has been carefully
checked and is believed to be reliable. However, no responsibility is assumed for
inaccuracies or omissions. Telit reserves the right to make changes to any products
described herein and reserves the right to revise this document and to make changes from
time to time in content hereof with no obligation to notify anyperson of revisions or changes.
Telit does not assume any liability arising out of the application or use of any product,
software, or circuit described herein; neither does it convey license under its patent rights
or the rights of others.
It is possible that this publication may contain references to, or information about Telit
products (machines and programs), programming, or services that are not announced in
your country. Such references or information must not be construed to mean that Telit
intends to announce such Telit products, programming, or services in your country.
COPYRIGHTS
This instruction manual and the Telit products described in this instruction manual may be,
include or describe copyrighted Telit material, such as computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for
Telit and its licensors certain exclusive rights for copyrighted material, including the
exclusive right to copy, reproduce in any form, distribute and make derivative works of the
copyrighted material. Accordingly, any copyrighted material of Telit and its licensors
contained herein or in the Telit products described in this instruction manual may not be
copied, reproduced, distributed, merged or modified in any manner without the express
written permission of Telit. Furthermore, the purchase of Telit products shall not be deemed
to grant either directly or by implication, estoppel, or otherwise, any license under the
copyrights, patents or patent applications of Telit, as arises by operation of law in the sale
of a product.
COMPUTER SOFTWARE COPYRIGHTS
The Telit and 3rd Party supplied Software (SW) products described in this instruction
manual may include copyrighted Telit and other 3rd Party supplied computer programs
stored in semiconductor memories or other media. Laws in the Italy and other countries
preserve for Telit and other 3rd Party supplied SW certain exclusive rights for copyrighted
computer programs, including the exclusive right to copy or reproduce in any form the
copyrighted computer program. Accordingly, any copyrighted Telit or other 3rd Party
supplied SW computer programs contained in the Telit products described in this instruction
manual may not be copied (reverse engineered) or reproduced in any manner without the
express written permission of Telit or the 3rd Party SW supplier. Furthermore, the purchase
of Telit products shall not be deemed to grant either directly or by implication, estoppel, or
otherwise, any license under the copyrights, patents or patent applications of Telit or other
3rd Party supplied SW, except for the normal non-exclusive, royalty free license to use that
arises by operation of law in the sale of a product.

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USAGE AND DISCLOSURE RESTRICTIONS
I. License Agreements
The software described in this document is the property of Telit and its licensors. It is
furnished by express license agreement only and may be used only in accordance with the
terms of such an agreement.
II. Copyrighted Materials
Software and documentation are copyrighted materials. Making unauthorized copies is
prohibited by law. No part of the software or documentation may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language or
computer language, in any form or by any means, without prior written permission of Telit.
III. High Risk Materials
Components, units, or third-party products used in the product described herein are NOT
fault-tolerant and are NOT designed, manufactured, or intended for use as on-line control
equipment in the following hazardous environments requiring fail-safe controls: the
operation of Nuclear Facilities, Aircraft Navigation or Aircraft Communication Systems, Air
Traffic Control, Life Support, or Weapons Systems (High Risk Activities"). Telit and its
supplier(s) specifically disclaim any expressed or implied warranty of fitness for such High
Risk Activities.
IV. Trademarks
TELIT and the Stylized T Logo are registered in Trademark Office. All other product or
service names are the property of their respective owners.
V. Third Party Rights
The software may include Third Party Right software. In this case you agree to comply with
all terms and conditions imposed on you in respect of such separate software. In addition
to Third Party Terms, the disclaimer of warranty and limitation of liability provisions in this
License shall apply to the Third Party Right software.
TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED
FROM ANY THIRD PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY
MATERIALS INCLUDED IN THE SOFTWARE, ANY THIRD PARTY MATERIALS FROM
WHICH THE SOFTWARE IS DERIVED (COLLECTIVELY “OTHER CODE”), AND THE
USE OF ANY OR ALL THE OTHER CODE IN CONNECTION WITH THE SOFTWARE,
INCLUDING (WITHOUT LIMITATION) ANY WARRANTIES OF SATISFACTORY
QUALITY OR FITNESS FOR A PARTICULAR PURPOSE.
NO THIRD PARTY LICENSORS OF OTHER CODE SHALL HAVE ANY LIABILITY FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED
AND WHETHER MADE UNDER CONTRACT, TORT OR OTHER LEGAL THEORY,
ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE OTHER CODE
OR THE EXERCISE OF ANY RIGHTS GRANTED UNDER EITHER OR BOTH THIS
LICENSE AND THE LEGAL TERMS APPLICABLE TO ANY SEPARATE FILES, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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APPLICABILITY TABLE
PRODUCTS
BLUEMOD+S42M/AI
BLUEMOD+S42M/AI3ATH

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CONTENTS
1. INTRODUCTION .......................................................................... 7
Scope......................................................................................... 7
Audience.................................................................................... 7
Contact Information, Support...................................................... 7
Text Conventions ....................................................................... 8
Related Documents.................................................................... 8
2. OVERVIEW.................................................................................. 9
3. GENERAL PRODUCT DESCRIPTION ...................................... 10
Feature Summary..................................................................... 10
Applications.............................................................................. 11
Block Diagram.......................................................................... 12
4. APPLICATION INTERFACE ...................................................... 13
Power Supply........................................................................... 13
Reset........................................................................................ 14
Serial Interface......................................................................... 15
I2C Interface ............................................................................. 17
General Purpose I/O (GPIO) .................................................... 17
Serial Wire Debug Interface...................................................... 17
MEMS Sensors (Optional)........................................................ 18
Test Mode ................................................................................ 19
Operating in a Power-Switched Environment............................ 19
5. MODULE PINS........................................................................... 20
Pin Numbering.......................................................................... 20
Pin Allocation............................................................................ 20
Pin Description......................................................................... 21
Handling of Unused Signals ..................................................... 21
6. ELECTRICAL CHARACTERISTICS .......................................... 22
Absolute Maximum Ratings...................................................... 22
Operating Conditions................................................................ 22
Environmental Requirements ................................................... 22
DC Parameter .......................................................................... 23
Power Consumption and Power-Down Modes.......................... 24
RF Performance....................................................................... 25
Antenna-Gain and Radiation Pattern........................................ 26

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7. MECHANICAL CHARACTERISTICS......................................... 28
Dimensions .............................................................................. 28
Recommended Land Pattern.................................................... 28
Re-flow Temperature-Time Profile............................................ 29
Placement Recommendation.................................................... 30
Antenna Issues......................................................................... 30
Housing Guidelines .................................................................. 30
Safety Guidelines ..................................................................... 30
Cleaning................................................................................... 31
8. APPLICATION DIAGRAM.......................................................... 31
9. COMPLIANCES......................................................................... 32
Declaration of Conformity CE ................................................... 32
SRRC Compliance ................................................................... 32
NCC Compliance...................................................................... 32
Bluetooth Qualification.............................................................. 39
RoHS Declaration..................................................................... 40
10. PACKING................................................................................... 41
Tape&Reel Packing.................................................................. 41
Tray Packing ............................................................................ 43
Moisture Sensitivity Level......................................................... 43
11. EVALUATION KIT...................................................................... 44
12. SAFETY RECOMMENDATIONS................................................ 45
13. ACRONYMS............................................................................... 46
14. DOCUMENT HISTORY .............................................................. 47

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1. INTRODUCTION
Scope
This document provides information how the BlueMod+S42M can be integrated into
customer systems. It addresses hardware specifications of the BlueMod+S42M and
requirements of the hardware environments for the BlueMod+S42M.
The description text “BlueMod+S42M” refers to all modules listed in the
Applicability Table.
Audience
This document is intended for Telit customers, especially system integrators, about to
implement Bluetooth modules in their application.
Contact Information, Support
For general contact, technical support services, technical questions and report
documentation errors contact Telit Technical Support at:
•TS-EM[email protected]
•TS-AM[email protected]
•[e-mail]
•[e-mail]
Alternatively, use:
https://www.telit.com/contact-us/
For detailed information about where you can buy the Telit modules or for recommendations
on accessories and components visit:
https://www.telit.com/
Our aim is to make this guide as helpful as possible. Keep us informed of your comments
and suggestions for improvements.
Telit appreciates feedback from the users of our information.

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Text Conventions
Danger –This information MUST be followed or catastrophic
equipment failure or bodily injury may occur.
Caution or Warning –Alerts the user to important points about
integrating the module, if these points are notfollowed, the module and
end user equipment may fail or malfunction.
Tip or Information –Provides advice and suggestions that may be
useful when integrating the module.
All dates are in ISO 8601 format, i.e. YYYY-MM-DD.
Related Documents
•[1] Bluetooth SIG Core SpecificationV4.2
•[2] UICP_UART_Interface_Control_Protocol, 30507ST10756A
•[3] BlueMod+S42M AT Command Reference, 80527ST10839A
•[4] BlueMod+S42M Software User Guide, 1VV0301391
•[5] BlueEva+S42M Evaluation Kit User Guide, 1VV0301390

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2. OVERVIEW
This document provides information how the BlueMod+S42M can be integrated into
customer systems. It addresses hardware specifications of the BlueMod+S42M and
requirements of the hardware environments for the BlueMod+S42M.
The term BlueMod+S42M is used as an abreviation and refers to
both, the BlueMod+S42M/AI and the BlueMod+S42M/AI3ATH.
If information is related to dedicated versions, the whole product
name is used.
The BlueMod+S42M is delivered in two different hardware versions:
•BlueMod+S42M/AI: with integrated bluetooth antenna and without additional
sensors
•BlueMod+S42M/AI3ATH: with integrated bluetooth antenna and with a 3 axis
acceleration sensor (3A) and a temperature and humidity sensor (TH)
The integration of the BlueMod+S42M bluetooth module within user
application shall be done according to the design rules described in
this manual.
The information presented in this document is believed to be accurate and reliable.
However, no responsibility is assumed by Telit Communications S.p.A. for its use, nor any
infringement of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent rights of Telit
Communications S.p.A. other than for circuitry embodied in Telit products. This document
is subject to change without notice.

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3. GENERAL PRODUCT DESCRIPTION
Feature Summary
•Supports Bluetooth low energy
•Fully qualified Bluetooth V4.2 Single Mode LE
•CE certified
•SRRC and NCC certified
•Humidity sensor onboard (optional)
•3 axis accelerometer onboard (optional)
•Fast connection setup
•RF output power typ 0dBm
•RF output power -40dBm in Whisper Mode
•High sensitivity design
•Supply voltage range 1,8V to 3,6V
•Internal crystal oscillator (40 MHz)
•LGA Surface Mount type. BlueMod+S42M: 17 x 10 x 2.6 mm3
•Pin compatible to Telit BlueMod+S, BlueMod+S42 and BlueMod+SR
•Shielded to be compliant to optional FCC full modular approval
•Flexible Power Management
•128-bit AES encryption
•High-speed UART interface
•I2C Master
•Manufactured in conformance with RoHS2
•Weight: 0.65g

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Applications
The BlueMod+S42M is designed to be used in low power applications, like sensor devices.
Some typical applications are described in this chapter.
Supported profiles are:
•Terminal I/O
•GATT based LE-profiles
Support for any additional profile is possible on request.
3.2.1. General Cable Replacement
In case there is no standardized application specific profile available the BlueMod+S42M
offers Telit’s Terminal I/O profile, which allows transparent data transfer over UART and
supports Secure Simple Pairing, making the pairing process easy and the connection
secure. Terminal I/O is available for iOS and Android as well as implemented in Telit’s dual
mode module BlueMod+SR.
3.2.2. Industry
BlueMod+S42M can be used to monitor and control motors, actuators, values and entire
processes.
3.2.3. POS/Advertising
BlueMod+S42M supports iBeacon or similar applications.
3.2.4. Healthcare and Medical
Usage of Bluetooth is aimed mainly at devicesthat are used formonitoring vital data. Typical
devices are blood glucose meter, blood pressure cuffs and pulse ox meters. Bluetooth
BR/EDR and low energy were chosen by the Continua Health Alliance as transports for
interoperable end to end communication.
3.2.5. Sports and Fitness
In the sports and fitness segment the BlueMod+S42M is used in devices for positioning as
well as monitoring vital data. Typical devices in this market are heart rate monitors, body
temperature thermometers, pedometers, cadence meters, altimeter, positioning / GPS
tracking and watches displaying information from sensors.
3.2.6. Entertainment
Bluetooth technology is already used in a wide variety of devices in the entertainment
sector, namely set-top boxes / gaming consoles. BlueMod+S42M is especially suited for
use in remote controls, gaming controller and wireless mouse/keyboard applications.

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Block Diagram
BLE Single Chip
VSUP
BlueMod+S42M/AI
RESET
I2C
UART
SPI
1
2
up to 7
3
GND
3.0V
40MHz
SWD
onboard
antenna
GPIO
up to 2
2
Figure 1: BlueMod+S42M/AI Block Diagram
BLE Single Chip
VSUP
BlueMod+S42M/AI-3ATH
RESET
I2C
UART
SPI
1
2
up to 7
3
GND
3.0V
40MHz
SWD
onboard
antenna
GPIO
up to 2
2
Temp &
Humidity
Sensor (TH)
Motion
Sensor (3A)
Figure 2: BlueMod+S42M/AI3ATH Block Diagram

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4. APPLICATION INTERFACE
Power Supply
BlueMod+S42M require a power supply with the following characteristics:
Typical: 3,0VDC, min.: 1,8VDC, max.: 3,6VDC, thereby delivering > 25 mA peak
BlueMod+S42Mis designed to be poweredfrom 3V coin cell batteries e.g. CR2032 directly,
or any other power source complying with thegiven requirements. For optimal performance,
a stable supply is recommended. Furthermore, it is recommended to place a capacitor in
parallel to the CR2032 3V coin cell battery in order to prolong battery lifetime, by
compensating the effects of the rising source resistance of the battery to pulsed loads. Since
the isolationresistance of this capacitor will discharge the batteryin a not insignificant scale,
the capacitor should be chosen under consideration of the following rules:
•capacitance as small as necessary
•nominal voltage as high as possible
•case size as large as possible
•use X7R instead of X5R
.
BlueMod+S42M
XC6209F-3.3
E-6,F-6
VSUP
GND:
A-7,E-7,F-7,B-[5:8],
C-[5:8],D-8,E-8,F-8
1µ + 100n
1µ
VOUT
VSS
VIN
CE
5 1
3
2
+5VDC
Figure 3: BlueMod+S42M Example Power Supply with LDO

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Reset
BlueMod+S42M are equipped with circuitry for generating reset from two sources:
•A reset is held active, when VSUP falls below the threshold of the Supply Voltage
Monitor (VIT- = 1,67V), and is released when VSUP rises above VIT-+ VHYST .
•By holding pin B-1 (EXT-RES#) at ≤ VSUP*0,3V for tHOLDRESETNORMAL ≥0,2µs, an
external reset (pin reset) is generated. This pin has a fixed internal pull-up resistor
(RPU = 10kΩ... 30kΩ). EXT-RES# may be left open if not used.
BlueMod+S42M
E-6,F-6
VSUP
GND
+3V3
EXT-RES# B-1
Reset-Switch is optional
Please Note: EXT-RES# of BlueMod+S42M has a 20k (range 10k to 30k) internal pullup.
Reset signal is optional
Host MCU
GPIO
VDD
Figure 4: BlueMod+S42M Example Reset
The following table shows the pin states of BlueMod+S42M during reset active.
Pin Name
State: BlueMod+S42M
EXT-RES#
Input with pull-up typ. 20kΩ
XL-IN
Input
XL-OUT
Output
SWDIO
Input with pull-up (1)
SWCLK
Input with pull-up (1)
all other port pins
Input with pull-down (1)
(1) pull-up, pull-down: RPU, RPD is typ. 10kΩ
Table 1: Pin States during Reset
If a logic signal driving EXT-RES# does not go fully to VSUP, some additional current is
drawn as a result of the internal pullup resistor on EXT-RES#. To minimize current draw,
an open drain driver or a logic-level FET as shown in Figure 5 can be used.
BlueMod+S42M
20k
EXT-RES#
VSUP
RES
EXT-RES
Figure 5: EXT-RES# with external FET

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Serial Interface
The serial interface of BlueMod+S42M is a high-speed UART interface supporting
RTS/CTS flow control and interface-up/down mechanism according to the UICP+ protocol
(refer to [2]).
Electrical interfacing is at CMOS levels (defined by VSUP; see chapter 6.4.1).
Transmission speeds are 9600 –921600 bps and 1Mbps (asynchronous).
Character representation: 8 Bit, no parity, 1 stop bit (8N1).
Hardware flow-control with RTS and CTS (active low).
Transmission speed may be limited by firmware. See corresponding
AT command reference [3] for further information.
4.3.1. Basic Serial Interface
The basic serial interface (with RTS/CTS flow control) uses only four signal lines (UART-
RXD, UART-TXD, UART-CTS#, UART-RTS#) and GND. IUR-IN#, IUR-OUT# and GPIO[4]
(see below) can be left unconnected.
BlueMod+S42M
Host
UART-RXD
UART-TXD
UART-CTS#
UART-RTS#
GND
Figure 6: Basic Serial Interface
If the host in question is sufficiently fast, a four-wire scheme may be successful. Connect
the serial lines UART-RXD, UART-TXD as well as UART-RTS# and GND; leave UART-
CTS# open. The host is required to stop sending data within a short time after de-assertion
of UART-RTS# (there is room for up to 4 more characters at the time RTS# drops).
UICP has to be deactivated permanently in this configuration, because
signal UART-CTS# and IUR-IN# become inputs with no PU or PD if
UICP is active. This would cause floating CMOS inputs.
It is strongly recommended to use hardware flow control in both
directions. Not using flow control can cause a loss of data.

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4.3.2. Serial Interface with UICP
A substantially saving of power during idle phases can be achieved (see 6.5.1) when the
UICP protocol is used (refer to [2]). This protocol should be implemented on the host side
as well. Signals IUR-IN# and IUR-OUT# should be connected to the host and may be
mapped to DSR and DTR, if an RS232-style (DTE-type) interface is used (see Figure 7).
2
BlueMod+S42M
GND
MAX3241
14
+3V3
22
23
2
3
7
8
4
6
1
9
TXD
RXD
RTS#
CTS#
IUR-OUT#
IUR-IN#
TXD
RXD
RTS
CTS
DTR
DSR
DCD
RI
RS232
DSUB9 (male)
9
4
10
5
11
6
7
8
19
13
18
12
17
16
15
F-4
D-2
D-7
F-3
B-4
D-5
UART_TXD
UART_RXD
UART_RTS#
UART_CTS#
IUR-OUT#
IUR-IN#
SHDN#
EN#
100n
100n
28
24
1
+3V3
100n 100n 100n
26
3
27
25
V+
VCC
V -
GND
C2+
C2-
C1+
C1-
220R
220R
220R
220R
220R
220R
5
SigGND
can be left open
VSUP
+3V3
DTE style connector pinout
Figure 7: BlueMod+S42M Example Serial Interface (RS-232) Supporting UICP
If I/O line availability at the host side is extremely tight, 2 I/O lines could be saved by using
the following scheme. This would come at the cost of
•The host is not allowed to enter sleep mode.
•The host must accept incoming data at all times and is not able to stop the
BlueMod+Sx sending data. This may be difficult to control for all scenarios and
adds the risk that data gets lost.
•The host doesn’t implement UICP, but wake-up BT via GPIO.
UART-TXD
GND
UART-RXD
IUC_IN# / CTS#
UART-RXD
UART-TXD
BlueMod+Sx
Host
RTS#
CTS#
IUC_OUT# / RTS#
IUR_OUT#
IUR_IN#BM+Sx-WKUP
Figure 8: Five Wire Interface supporting UICP

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I2C Interface
The I2C bus interface serves as an interface between the internal microcontroller and the
serial I2C bus. BlueMod+S42M is the master and controls all I2C bus specific sequencing,
protocol and timing. It supports standard (100kHz) and fast (400kHz) speed modes. The
BlueMod+S42M as an I2C master must be the only master of the I2C bus (no multimaster
capability). Clock stretching is not supported.
SDA and SCL can be used to form an I2C interface. It is not required to connect pull-up
resistors on SCL and SDA when this interface is used.
SDA
SCL
SDA
SCL
BlueMod+S42M
VSUP
B-2
D-3
E-6,F-6
+3.0V
4k7
Figure 9: BlueMod+S42M I2C Interface
General Purpose I/O (GPIO)
Configuration and functionality of pins
•IOA
•IOB
•HANGUP
are described in [3]. Unused GPIO pins shall be left unconnected to stay compatible. There
may be functions assigned to some in future versions of the firmware.
Serial Wire Debug Interface
The Serial Wire Debug (SWD) interface (signals SWDIO, SWCLK) is normally not used in
a customer’s product. It is reserved for debugging purposes.
Leave SWDIO, SWCLK unconnected. Only if you intend to use them for debugging
purposes, make them available.

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MEMS Sensors (Optional)
The BlueMod+S42M includes optional an triaxial, low-g acceleration sensor, which
integrates a multitude of features that facilitate its use especially in the area of motion
detection applications, such as device orientation detection, navigation and spirit level
measurements. Featuring 14 bit digital resolution, the sensor allows very low-noise
measurement of accelerations in 3 perpendicular axes and thus senses tilt, motion, shock
and vibration.
Option: 3A
Furthermore the BlueMod+S42M includes optional an humidity and temperature sensor that
provides high accuracy measurements with very low power consumption.
The capacitive-based sensor provides high accuracy measurement capability for a wide
range of environmental monitoring applications and Internet of Things (IoT) such as smart
thermostats, smart home assistants and wearables. The sensor can also be used to provide
critical temperature and humidity data for cold chain transportation and storage of
perishable goods to help ensure products like food and pharma- ceuticals arrive fresh.
The sensor is factory-calibrated to 0.2°C temperature accuracy and 2% relative humidity
accuracy and includes a heating element to burn away condensation and moisture for
increased reliability.
Option: TH
The functionality of both sensors is highly Firmware dependent!
Please refer to [4] for further informations.

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Test Mode
For regulatory approval purposes, the ability of test mode operation like “Direct Test Mode”
(DTM) is mandatory. The Direct Test Mode (as defined by the Bluetooth SIG) is part of the
BlueMod+S42M.
For enabling the test mode the BlueMod+S42M provides the Testmode# IO pin. This pin is
low active, connect to GND to activate DTM.
To enter and use DTM, access to the following signals is required:
•TESTMODE#
•UART-RXD
•UART-TXD
•UART-RTS#
•UART-CTS#
•GND
These pins shall be routed to some test pads on an outer layer, but can be left open during
normal operation when not used.
Please note the UART is required for operation of DTM. For any
regulatory approval, UART-RXD, UART-TXD, UART-RTS# and
UART-CTS# must be freely accessible.
Operating in a Power-Switched Environment
A potential “back feeding” problem may arise, if the module is operated in an environment
where its power supply (VSUP) is switched off by the application. This might be done to
save some power in times Bluetooth is not needed.
As stated in Table 4, the voltage on any I/O pin must not exceed VSUP by more than 0,3V
at any time. Otherwise, some current IINJ flows through the internal protection diodes. This
may damage the module (please refer to chapter 6.1 for limits).
There is no problem if the application circuit design and programming can assure that all
signals directed towards BlueMod+S42M are set to low (U < 0,3V) before and while VSUP
is turned off. If this is not guaranteed, at least a series resistor (about 1k) must be inserted
into each signal path. This does protect the module but obviously cannot prevent from an
unwanted, additional current flow in case of such signal being at high-level. It may be
necessary to use driver chips in such applications, that gate off these signals while VSUP
is not present.

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5. MODULE PINS
Pin Numbering
F1
E1
D1
C1
B1
A1 A2 A3 A4 A5 A6 A7 A8
F2
E2
D2
C2
B2
F3
E3
D3
C3
B3
F4
E4
D4
C4
B4
F5
E5
D5
C5
B5
F6
E6
D6
C6
B6
F7
E7
D7
C7
B7
F8
E8
D8
C8
B8
Figure 10: BlueMod+S42M Pin Numbering (Top View)
Pin Allocation
1
2
3
4
5
6
7
8
A
DNU
DNU
DNU
DNU
DNU
DNU
GND
DNU
B
EXT-RES#
I2C-SDA
DNU
IUR-OUT#
GND
GND
GND
GND
C
DNU
DNU
DNU
DNU
GND
GND
GND
GND
D
DNU
UART-RXD
I2C-SCL
HANGUP
IUR-IN#
DNU
UART-RTS#
GND
E
DNU
IOA
DNU
IOB
DNU
VSUP
GND
GND
F
TESTMODE#
DNU
UART-CTS#
UART-TXD
DNU
VSUP
GND
GND
1
2
3
4
5
6
7
8
Table 2: BlueMod+S42M Pin Allocation (Top View)