MOD-GSM development boardUser's manual

All boards produced by Olimex are ROHS compliant

Rev. E, February 2013

Copyright(c) 2013, OLIMEX Ltd, All rights reserved

Page 1

INTRODUCTIONMOD-GSM is excellent board for adding remote monitoring and control with the use of the GSM cellular network. With this module you can use all of the the features of each one of Olimex's boards with on-board UEXT connector by GSM network. Also the board can work in stand alone mode, but only when the SIM card is without PIN code. In stand alone mode MOD-GSM don't offer much opportunities. It can receive information by GSM network, but if you want to operate with this information, you will need appropriate board with UEXT connected to MOD-GSM. Choose the other board depending on the application you want to have. MOD-GSM contains quad-band GSM GPRS module 850/900/1800/1900Mhz inside which covers most used GSM networks around the world. The GSM antenna is build in the board so no need for external expensive GSM antennas.

BOARD FEATURES

• GSM/GPRS quad-band MODULE 850/900/1800/1900Mhz with build on-board GSM cellular antenna

• Li-ion backup battery 3.7 V 1200 mAh for up to 200 hours of GSM module stand-by

• SIM-card holder• Status LED • On-GSM module temperature sensor • UEXT• PWR_EXT• PWRKEY• On-board DC-DC converter for stand alone mode and battery recharge• PCB: FR-4, 1 mm (0,039"), solder mask, silkscreen component print• Dimensions: 79.2x57.6 mm (3.1182x2.268")

ELECTROSTATIC WARNING

The MOD-GSM board is shipped in protective anti-static packaging. The board must not be subject to high electrostatic potentials. General practice for working with static sensitive devices should be applied when working with this board.

BOARD USE REQUIREMENTS

Hardware: 12V, 800mA at least Adapter, if you want to recharge the battery. Some of Olimex boards with UEXT on it.

Important: If your board does not work, first try to charge the battery as you power supply the board for few hours. Note that the baud rate it is set on hardware level to 115200. Consider using 115200 when connected to the terminal or host board.

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MODULE FEATURES– Power Supply – single supply voltage 3.4V – 4.5V

– Power saving – typical power consumption in SLEEP mode to 2.5mA (BS-PA-MFRMS=5)

– Charging – Supports charging control for Li-Ion battery

– Frequency bands:

– SIM340DZ Quad-band: GSM 850, EGSM 900, DCS 1800, PCS 1900. The SIM340DZ can search the 4 frequency bands automatically. The frequency bands also can be set by AT command.

– Compliant to GSM Phase 2/2+

– GSM class – Small MS

– Transmit Power

– Class 4 (2W) at EGSM 900

– Class 1 (1W) at DCS1800 and PCS 1900

– GPRS connectivity

– GPRS multi-slot class 8 (optional)

– GPRS multi-slot class 10 ( default)

– GPRS mobile station class B

– Temperature range

– Normal operation: -20°C to +55°C

– Restricted operation: -30°C to -20°C and +55°C to +80°C

– Storage temperature -40°C to +80°C

– DATA GPRS:

– GPRS data downlink transfer: max. 85.6 kbps

– GPRS data uplink transfer: max. 42.8 kbps

– Coding scheme: CS-1, CS-2, CS-3 and CS-4

– SIM340DZ supports the protocols PAP (Password Authentication Protocol) usually used for PPP connections

– The SIM340DZ integrates the TCP/IP protocol

– Support Packet Switched Broadcast Control Channel (PBCCH)

– CSD transmission rates: 2.4, 4.8, 9.6, 14.4 kbps, non-transparent

– Unstructured Supplementary Services Data (USSD) support

– SMS

– MT, MO, CB, Text and PDU mode

– SMS storage: SIM card

– FAX - Group 3 Class 1

– SIM interface - Support SIM card: 1.8V ,3V

– External antenna - Connected via 50 Ohm antenna connector or antenna pad

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– Audio features - Speech codec modes:

– Half Rate (ETS 06.20)

– Full Rate (ETS 06.10)

– Enhanced Full Rate (ETS 06.50/06.60/06.80)

– Echo suppression

– Serial interface and Debug interface

– Serial Port: Seven lines on Serial Port Interface

– Serial Port can be used for CSD FAX, GPRS service and sending AT command of controlling module.

– Auto bauding supports baud rates from 1200 bps to 115200bps.

– Debug port: provide two lines on Serial Port Interface /TXD and /RXD

– Debug port is only used for debugging

– Phonebook management - Support phonebook types: SM, FD, LD, MC, RC, ON, ME,BN,VM,LA,DC,SD

– SIM Application Toolkit - Support SAT class 3, GSM 11.14 Release 99

– Real time clock – Implemented

– Timer function - Programmable via AT command

– Physical characteristics

– Size: 33±0.15 x 33±0.15 x 3±0.3 mm

– Weight: 7.8g

– Firmware upgrade – over serial interface

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SCHEMATIC

NA

NA

0

ON

GSM_PCB_ANT

1x3

90-DEGREE

1000uF/16VDC 2.2uF

100n

F

4.7nF10uF/10V/1206 220uF/10V/tant 1000uF/6.3V/8x12/low_ESR

10nF(NA)

10uF

/10V

/120

6

47uF/6.3V

1000uF/6.3V/8x12/low_ESR

220u

F/10

V/ta

nt

100nF

330pF(NA) 2.2uF(NA) 220nF(NA)1nF(NA)

1N4004(SMD)

1N5822(SMC)

1N5819S

0

OP

EN

15uH/DBS135

+5V VBAT

VBAT

+5V

+12V

VBAT+12V

VB

AT

VBAT

+5V

TB2_3.5MM

CON61.27MM-6-SMALL

BC817

68k4.7k

150k

4.99k/1% 15k/1% 4.99k/1%

2k33k

560R

10k22R

22R

22R

NANA

NA10K

1KNA(3.3K)NA(1K)NA(1K)

1KNA(1K)NA(1K)(NA)1K

33K 10K

220220

SIM-HOLDER

red

SIM340D

BH10R

BD9778HFP

TXD,RXD,RTS,CTS,DTR,DCD,RI,DBG_TX,DBG_RX,MAIN_RX,MAIN_TX

VS

IM,S

IMD

ATA

,SIM

CLK

,SIM

RS

T

AUXADC

AUXADC

CTS

CTS

DBG_RXDBG_RX

DBG_TX

DBG_TX

DCD

DCD

DTR

DTRMAIN_RX

MAIN_RX

MAIN_TX

MAIN_TX

NETLIGHT

NETLIGHT

PWRKEY

PWRKEY

RI

RI

RTS

RTS

RXD

RXD

SIMCLK

SIMCLK

SIMDATA

SIMDATA

SIMRST

SIMRST

TEMP_BAT

TEMP_BAT

TXD

TXD

VSIM

VSIM

1 24V

1 24V_E

1 25V_CHG_E

1 2

AGND_E

ANT

123

BAT 1 2

BAT_E

C2C3 C4 C5

C6 C7 C8

C10

C13 C14

C15

C16

C17

C18 C19 C20C21

D1

D2

D3

1 2DCDC_E

12

DO

WN

LOA

D

1

2

3DRX/MRX

1

2

3DTX/MTX

GND

L112

PWR

PWRKEY

123456

PWR_EXT

Q1

R1

R2R3

R4 R5 R6

R7

R8

R9

R10R11

R12

R13

R14R15

R16R17

R18R19R20R21

R22R23R24R25

R26 R27

R28R29

GND4

SIMCLK3SIMIO

6

SIMNC5SIMRST2

VCC1

SIM

STAT

AGND22

ANTENNA33

AUDIOOUT+26

AUDIOOUT-25

AUXADC29

BACKUP15

CTS45

DCD42

DEBUG_RX1 DEBUG_TX2

DTR43

EAR+23

GND117

GND230

GND331

GND432

GND534

GND635

GND736

GND837

GND948

GPO140

KBROW010

MIC1N20

MIC1P21

MIC2N19MIC2P18

NETLIGHT41

POWERKEY12

RER-24

RI11

RTS44

RXD3

SIMCLK7SIMDATA6

SIMRESET8

SIM_PRESENCE47SPI_CLK13

SPI_CS46

SPI_D/C16

SPI_DATA14

STATUS5

TEMP_BAT27TXD4

VBAT138

VBAT239

VCHG28

VSIM9

U1

1 23 45 67 89 10

UEXT

EN/SYNC7

FB3GND4

INV5

RT6SW

2VIN1

VR1

9-12VDC

MOD-GSM_rev_A1OLIMEX LTD, BULGARIA, 2013

OLIMEX LTD, BULGARIA, 2013

https://www.olimex.com

+

+ +

+ + +

5V_INGNDVBATPWR_INGPIO1AUXADC

BOARD LAYOUT

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POWER SUPPLY CIRCUITThe power supply of MOD-GSM may be done in two ways:

1. Power from +9 - 12VDC without using the external backup battery.In this case the external power supply is used for supplying of 4V to GSM module and thus the module can be powered only from external power supply and the battery must not be connected. In this case the jumpers have to be configured as follows:− jumper BAT_E must be open− jumper 4V_E must be closed− jumper 4V must be closed − jumper 5V_CHG_E must be open. − DCDC_E must be closed

Power consumption in this mode is:− near to 70mA when have a conversation.− around 20mA in normal mode (without conversation).

Important: 4V_E, 4V and 5V_CHG_E jumpers have to be moved together.

2. Power from +12VDC with external 4.2V Li backup battery. The GSM module is powered always via the battery voltage and the external power supply is used only for charging the battery if it is discharged, i.e. if you have plugged external power supply the battery will be charged and if the board is not powered from external power supply the board will work until the battery dies.

In this case the jumpers have to be configured as follows:− jumper BAT_E must be closed− jumper 4V_E must be open− jumper 4V must be open − jumper 5V_CHG_E must be closed − DCDC_E must be closed− Power consumption in this mode:

Depends on live of the battery and vary from 260mA to 330mA (fully discharged battery). If we supply the module only via battery, without external power supply, the current through the battery is between 15mA and 30mA if there is no conversation, and between 180mA - 240mA when there is conversation.

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CONNECTOR DESCRIPTIONSJTAG

Pin # Signal Name

1 NC

2 GND

3 RXD

4 TXD

5 RTS

6 CTS

7 DTR

8 DCD

9 RI

10 PWRKEY

This connector allows connecting to other Olimex boards with UEXT connector.

SIM-CARD

Pin # Signal Name

1 VSIM

2 SIMRST

3 SIMCLK

4 GND

5 NC

6 SIMDATA

This is standard SIM card connector, to operate MOD-GSM should have inserted valid SIM card for your operator network.

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PWR-CON

Pin # Signal Name

1 +12V

2 GND

This connector is used to power the MOD-GSM. External (+9-12VDC) power source have to be applied to this pins.

PWR_EXT

Pin # Signal Name Description

1 5V_IN 5V input for battery recharge

2 GND Ground

3 VBAT Output – for power supplying other devices from the GSM battery

4 PWR_IN Optional input for external power supply

5 GPIO1 Doesn't work

6 AUXADC Input for analog signal

BAT

Pin # Signal Name

1 VBAT

2 TEMP_BAT

3 GND

Note: The battery doesn't support TEMP_BAT.

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JUMPER DESCRIPTIONBAT_E

Connects 3.7V Li-ion battery to the GSM module. Default state is to be open to not drain the battery during stocking the modules.

Default state - open

4V_EThis jumper is used when power the module without battery. When connected enable 4V to the DCDC output.

Default state – open.

4VThis jumper is used when power the module without battery. When connected the jumper enable 4V to VBAT power pins of SIM340D module.

Default state – open.

5V_CHG_EThis jumper is used when the battery is present and allows battery charging. Connects the DCDC converter output (5V or 4V according 4V_E jumper state) to VCHG power pin of SIM340D module.

Default state closed

Important: 4V_E, 4V and 5V_CHG_E jumpers have to be moved together.

Do not plug in external +12V if BAT_E jumper is open!

DCDC_EEnable DCDC. Connect DCDC output ((5V or 4V according 4V_E jumper state) to the module.

Default state closed

DownloadWhen the jumper is closed allow SIM340D firmware upgrade.

Default state is open

DTX/ MTXThe DebugTX/MainTX defines whether Debug TX terminal or Main TX terminal of SIM340D module is connected to FT232RL virtual com port driver.

Default state is DTX

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DRX /MRXThe DebugRX/MainRX define whether Debug RX terminal or Main RX terminal of SIM340D module is connected to FT232RL virtual com port driver.

Default state is DRX

AGND_EEnable board analog ground.

Default state is closed

INPUT/OUTPUTPWRKEY button – turns on the MOD-GSM module. You can turn on the SIM340D by driving the PWRKEY to a low level voltage for period time from 500mS to 1S Status LED ( red) with name STAT – indicates the state of SIM340D module.STAT is off state - SIM340D is not running64ms On/ 800ms Off - SIM340D does not find the network64ms On/ 3000ms Off - SIM340D find the network64ms On/ 300ms Off - GPRS communication

IMPORTANT NOTE ABOUT THE UEXT

The information below is for older revisions of the board. If your board doesn't have the serial resistors mentioned below then there is no need to perform the actions mentioned below!

If MOD-GSM doesn't transmit properly data on the UEXT of another Olimex board, it might be because some other boards can interfere with MOD-GSM's signals. If the host board has any signal on the I2C and/or the SPI on the UEXT there is very high chance of erroneous behavior.

There are two workarounds:

1. Cut the UEXT cable wires 5,6,7,8,9,10. Only wires 1,2,3,4 (NC, GND, RXD, TXD) should remain.

OR

2. Remove resistors R19, R20, R21, R23, R24, R25

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MECHANICAL DIMENSIONS

All measures are in inches.

Page 12

AVAILABLE DEMO SOFTWARE

- Please check the MOD-GSM web pages (standard edition and battery edition): https://www.olimex.com/Products/Modules/RF/MOD-GSM/https://www.olimex.com/Products/Modules/RF/MOD-GSM-B/

ORDER CODEMOD-GSM assembled and tested.

How to order? You can order directly from our web shop or from any of our distributors. Check our web site https://www.olimex.com/ for more info. List of distributors: https://www.olimex.com/Distributors/

Board revision historyRev. A - initial releaseRev. A1 - removed resistors R19, R20, R21, R23, R24, R25

Document revision historyRev. B - edited October 2011 – changes in POWER SUPPLY CIRCUIT –

more detailedRev. C - added note about the recommended baud rate on page 2Rev. D - added important note about UEXT line; various formatting

changesRev. E - updated schematic and disclaimer

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© 2013 Olimex Ltd. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd. Other product names may be trademarks of others and the rights belong to their respective owners.

The information in this document is provided in connection with Olimex products. No license, express or implied or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Olimex products.

The hardware schematic is released under the Creative Commons Attribution-Share Alike 3.0 United States License. You may reproduce it for both your own personal use, and for commer cial use. You will have to provide a link to the original creator of the project https://www.olimex.com on any documentation or website.

You may also modify the files, but you must then release them as well under the same terms. Credit can be attributed through a link to the creator website: https://www.olimex.com

The software is released under GPL.

It is possible that the pictures in this manual differ from the latest revision of the board.

The product described in this document is subject to continuous development and improvements. All particulars of the product and its use contained in this document are given by OLIMEX in good faith. However all warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded. This document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable for any loss or damage arising from the use of any information in this document or any error or omission in such information or any incorrect use of the product.

This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation purposes only and is not considered by OLIMEX to be a finished end-product fit for general consumer use. Persons handling the product must have electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards.

Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. Olimex assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein.

THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE COMPONENTS USED TO CREATE MOD-GSM. THEY ARE CONSIDERED SUITABLE ONLY FOR MOD-GSM.

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