Telit Wireless Solutions CHARLIE User manual

Mod. 0805 2017-01 Rev.6
CHARLIE EVK
HW User Guide
1VV0301670 Rev. 2 –2020-10-29

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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 any person 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
CHARLIE EVALUATION KIT

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Contents
NOTICE 2
COPYRIGHTS ..................................................................................................2
COMPUTER SOFTWARE COPYRIGHTS.......................................................2
USAGE AND DISCLOSURE RESTRICTIONS................................................3
I. License Agreements.......................................................................3
II. Copyrighted Materials ....................................................................3
III. High Risk Materials ........................................................................3
IV. Trademarks ....................................................................................3
V. Third Party Rights...........................................................................3
APPLICABILITY TABLE..................................................................................4
CONTENTS ......................................................................................................5
1. INTRODUCTION............................................................................7
1.1. Scope .............................................................................................7
1.2. Audience ........................................................................................7
1.3. Contact Information, Support .........................................................7
1.4. Text Conventions ...........................................................................8
1.5. Related Documents........................................................................9
2. OVERVIEW..................................................................................10
NOTICE 12
3. CONNECTORS............................................................................13
3.1. Arduino MKR format Pin-out ........................................................13
3.2. MCU Native USB Connector........................................................15
3.3. ME310 Native USB Connector.....................................................16
3.4. MCU DEBUG connector...............................................................17
3.5. SIM Connectors............................................................................18
3.6. ANTENNA Connectors.................................................................19
4. CIRCUIT BLOCKS.......................................................................20
4.1. MCU to ME310 serial connection.................................................20
4.2. BMA400 Accelerometer ...............................................................21
4.3. MCU Buttons and LEDs ...............................................................22
4.4. ME310 SLED................................................................................23

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4.5. MCU Reset Button .......................................................................24
4.6. Battery Charger............................................................................25
4.7. 3V3 Power Supply........................................................................28
4.8. 1V8 Power Supply........................................................................29
4.9. 3V8 Power Supply........................................................................30
4.10. ME310 ON/OFF Switch................................................................31
4.11. MCU RTC Clock...........................................................................31
5. MECHANICAL DESIGN...............................................................32
5.1. Drawing ........................................................................................32
6. SAFETY RECOMMENDATIONS.................................................33
6.1. READ CAREFULLY .....................................................................33
7. ACRONYMS ................................................................................34
8. DOCUMENT HISTORY................................................................36

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1. INTRODUCTION
1.1. Scope
Scope of this document is to describe the hardware components of the CHARLIE EVK
board based on Telit ME310G1-WW module and ATSAMD21G18 MCU from Microchip.
1.2. Audience
This document is intended for Telit customers, who are integrators, about to implement their
applications using our CHARLIE EVK board.
1.3. Contact Information, Support
For general contact, technical support services, technical questions and report
documentation errors contact Telit Technical Support at:
•TS[email protected]
•TS[email protected]
•TS[email protected]
•TS[email protected]
Alternatively, use:
http://www.telit.com/support
For detailed information about where you can buy the Telit modules or for recommendations
on accessories and components visit:
http://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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1.4. 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 not followed, 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.

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1.5. Related Documents
•ME310G1 HW User Guide, 1VV0301351

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2. OVERVIEW
The aim of this document is to describe the “CHARLIE” EVK board based on Telit
ME310G1-WW modem module and ATSAMD21G18 MCU from Microchip.
The CHARLIE board is an Arduino MKR form factor evaluation board that can be
programmed with Arduino IDE or with native tools for ATSAMD21 from Microchip.
The CHARLIE EVK board is powered either by
•onboard USB connectors
•VIN pin on connector
Using either the onboard 3.8V DC power supply or by a 3.7 V LIPO battery.
All GPIO pins of Telit ME310G1-WW levels are set to 1.8 V, while all GPIO from
ATSAMD21 MCU are set at 3.3 V.
This document lists and describes circuit building blocks and connectors
Figure 1 - CHARLIE EVK Board

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Figure 2 - CHARLIE Block Diagram
The CHARLIE EVK has 2 USB connectors:
•The first USB connector is located at opposite site of ME310 module and SMA
connector is connected to the ATSAMD21 microcontroller
•The second USB connector is located near to the ME310 module and SMA
connector is connected to the ME310 module
ATSAMD21 MCU communicates with Telit ME310 module using an asynchronous serial
connection.
The ATSAMD21 MCU is connected to the onboard BMA400 accelerometer from Bosh
Sensortec.

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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 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. CONNECTORS
3.1. Arduino MKR format Pin-out
Figure 3 - Arduino MKR Pinout
Pin
Signal
I/O
Function
Type
MCU I/O
POWER SUPPLY
J4,14
+5V
O
5.0 V I/O Level
J4,13
VIN
I
External Power Input
J4,12
+3V3
O
3.3 V I/O Level
J4,11
GND
-
GPIO INTERFACE @ 3V3
J4,10
RESET
I
MCU Reset
J4,9
D14
I/O
GPIO/USART TX
PB22
J4,8
D13
I/O
GPIO/USART RX
PB23
J4,7
D12
I/O
GPIO/I2C SCL
PA09

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J4,6
D11
I/O
GPIO/I2C SDA
PA08
J4,5
D10
I/O
GPIO/SPI MISO
PA19
J4,4
D9
I/O
GPIO/SPI SCK
PA17
J4,3
D8
I/O
GPIO/SPI MOSI
PA16
J4,2
D7
I/O
GPIO/PWM
PA21
J4,1
D6
I/O
GPIO/PWM
PA20
J3,14
D5
I/O
GPIO/PWM
PB11
J3,13
D4
I/O
GPIO/PWM
PB10
J3,12
D3
I/O
GPIO/PWM
PA11
J3,11
D2
I/O
GPIO/PWM
PA10
J3,10
D1
I/O
GPIO
PA23
J3,9
D0
I/O
GPIO
PA22
J3,8
D21/A6
I/O
GPIO/AIN[7]
PA07
J3,7
D20/A5
I/O
GPIO/AIN[6]
PA06
J3,6
D19/A4
I/O
GPIO/AIN[5]
PA05
J3,5
D18/A3
I/O
GPIO/AIN[4]
PB04
J3,4
D17/A2
I/O
GPIO/AIN[11]
PB03
J3,3
D16/A1
I/O
GPIO/AIN[10]
PB02
J3,2
D15/A0
I/O
GPIO/AIN[0]
PA02
J3,1
AREF
I
AREF/AIN[1]
PA03

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3.2. MCU Native USB Connector
Figure 4 –ATSAMD21 Native USB
Pin
Signal
I/O
Function
Type
Comment
POWER SUPPLY
J1,1
5V
I
J1,5
GND
-
USB HS 2.0 COMMUNICATION PORT (FW upgrade and Data)
J1,2
USB_DM
I/O
USB differential Data (-)
PA24
J1,3
USB_DP
I/O
USB differential Data (+)
PA25
J1,4
USB OTG ID
N.C.
The J1 USB plug is connected to the ATSAMD21 MCU native USB port. The board is
protected by resettable fuse and ESD discharge.

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3.3. ME310 Native USB Connector
Figure 5 –ME310 Native USB
Pin
Signal
I/O
Function
Type
ME310
POWER SUPPLY
J7,1
5V
I
USB_VBUS
T18
J7,5
GND
-
USB HS 2.0 COMMUNICATION PORT (FW upgrade and Data)
J7,2
USB_DM
I/O
USB differential Data (-)
V18
J7,3
USB_DP
I/O
USB differential Data (+)
U19
J7,4
USB OTG ID
N.C.
The J7 USB plug is connected to the ME310 native USB port. The board is protected by
resettable fuse and ESD discharge.

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3.4. MCU DEBUG connector
Figure 6 - DEBUG connector
Pin
Signal
I/O
Function
Type
Comment
POWER SUPPLY
J2,1
3V3
I
J2,3
GND
-
J2,5
GND
-
J2,9
GND
-
DEBUG Interface
J2,2
SWDIO
I/O
DEBUG DATA
PA31
J2,4
SWCLK
I
DEBUG CLOCK
PA30
J2,10
RESETN
I
RESET
RESETN

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3.5. SIM Connectors
Figure 7 - SIM Sockets
The board supports a micro SIM socket and includes pads to solder an eSIM: both inputs
are ESD protected.

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3.6. ANTENNA Connectors
Figure 8 –Antennas
The 4G Cellular antenna signal is connected to the J8 SMA connector.
The GNSS Signal can be connected either to the uFL connector J9 or
the GPS Patch Antenna, which is enabled by default.
In order to disable the Patch Antenna and connect an external GPS
antenna to J9, remove R48 and R21 resistors and solder a 0-ohm
resistor on R20 pads and a 100 pF capacitor on C89 pads.

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4. CIRCUIT BLOCKS
4.1. MCU to ME310 serial connection
Figure 9 –MCU to ME310 Serial Connection
The ATSAMD21 MCU GPIO works at 3.3 V while the ME310 GPIO levels are 1.8 V. To
connect the two devices using a serial connection with hardware handshake, level shifters
are used.
MCU Pin
MCU Direction
Function
ME310 Direction
ME310 Pin
PA15
I
CTS
O
AA17
PA13
I
RXD
O
AA15
PA14
O
RTS
I
Y18
PA12
O
TXD
I
Y16
PA28
I
RI
O
D13
PA27
O
DTR
I
D11