MOD-GSM development board
User's manual
All boards produced by Olimex are ROHS compliant
Rev. E, February 2013
Copyright(c) 2013, OLIMEX Ltd, All rights reserved
Page 1
INTRODUCTION
MOD-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
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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.
Page 2
MODULE FEATURES
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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:
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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+
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GSM class – Small MS
Transmit Power
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–
Class 4 (2W) at EGSM 900
Class 1 (1W) at DCS1800 and PCS 1900
GPRS multi-slot class 8 (optional)
GPRS multi-slot class 10 ( default)
GPRS mobile station class B
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
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
MT, MO, CB, Text and PDU mode
SMS storage: SIM card
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GPRS connectivity
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Temperature range
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DATA GPRS:
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–
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–
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SMS
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FAX - Group 3 Class 1
SIM interface - Support SIM card: 1.8V ,3V
External antenna - Connected via 50 Ohm antenna connector or antenna pad
Page 3
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Audio features - Speech codec modes:
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Half Rate (ETS 06.20)
Full Rate (ETS 06.10)
Enhanced Full Rate (ETS 06.50/06.60/06.80)
Echo suppression
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
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Serial interface and Debug interface
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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
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Size: 33±0.15 x 33±0.15 x 3±0.3 mm
Weight: 7.8g
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Firmware upgrade – over serial interface
Page 4
SCHEMATIC
VSIM,SIMDATA,SIMCLK,SIMRST
MOD-GSM_rev_A1
OLIMEX LTD, BULGARIA, 2013
https://www.olimex.com
+5V
SIMDATA
SIMCLK
SIMRST
VSIM
R11
R12
R13
22R
22R
22R
3
2
1
R10
SIMCLK
SIMRST
VCC
10k
SIMIO
SIMNC
GND
6
5
4
PWR_EXT
5V_IN
GND
VBAT
PWR_IN
GPIO1
AUXADC
1
2
3
4
5
6
D3
1N5819S
VBAT
C18
330pF(NA)
C19
2.2uF(NA)
C20
220nF(NA)
C21
1nF(NA)
SIM
SIM-HOLDER
R29
R28
220
220
+12V
AUXADC
CON61.27MM-6-SMALL
U1
TXD,RXD,RTS,CTS,DTR,DCD,RI,DBG_TX,DBG_RX,MAIN_RX,MAIN_TX
UEXT
RXD
RTS
DTR
RI
R17 R26
10K 33K
R27
10K
R18
R19
R20
R21
1K
NA(3.3K)
NA(1K)
NA(1K)
1
3
5
7
9
2
4
6
8
10
5
40
14
13
46
16
10
STATUS
VSIM
GPO1
SIMDATA
SPI_DATA
SIMCLK
SPI_CLK
SIMRESET
SPI_CS
SIM_PRESENCE
SPI_D/C
KBROW0
BACKUP
VCHG
RXD
TXD
TEMP_BAT
DTR
AUXADC
RTS
CTS
NETLIGHT
RI
POWERKEY
DCD
DEBUG_TX
VBAT1
DEBUG_RX
VBAT2
ANTENNA
MIC2P
MIC2N
MIC1N
MIC1P
EAR+
RER-
AUDIOOUT+
AUDIOOUT-
GND1
GND2
GND3
GND4
GND5
GND6
GND7
GND8
GND9
AGND
9
6
7
8
47
15
28
27
29
41
12
38
39
17
30
31
32
34
35
36
37
48
22
R22
R23
R24
R25
1K
NA(1K)
NA(1K)
(NA)1K
TXD
CTS
DCD
PWRKEY
DTX/MTX
1
2
3
MAIN_TX
TXD
DBG_TX
MAIN_RX
MAIN_TX
DTR
RTS
CTS
RI
DCD
DBG_TX
DBG_RX
ANT
GSM_PCB_ANT
TEMP_BAT
R14
R15
NETLIGHT
NA
NA
5V_CHG_E
1
2
1
4V
2
BH10R
DRX/MRX
1
2
3
MAIN_RX
RXD
DBG_RX
OPEN
10uF/10V/1206
C13
VBAT
BAT_E
90-DEGREE
BAT
1
2
3
1
2
33
18
19
20
21
23
24
26
25
C16
220uF/10V/tant
DOW NLOAD
3
4
43
44
45
11
42
2
1
0
NA
AUXADC
PWRKEY
R16
NA
VBAT
VSIM
SIMDATA
SIMCLK
SIMRST
+5V
VBAT
PWRKEY
47uF/6.3V
C15
100nF
TEMP_BAT
1000uF/6.3V/8x12/low_ESR
VBAT
+5V
STAT
red
R9
560R
R7
2k
1
2
1x3
SIM340D
1
4V_E
NA
2
+12V
R4
TB2_3.5MM
1
2
R5
15k/1%
C10
10nF(NA)
R6
4.99k/1%
DCDC_E
1
2
VR1
D1
1N4004(SMD)
C3
2.2uF
C4
100nF
1
6
VIN
RT
INV
SW
5
2
3
4.99k/1%
L1
15uH/DBS135
C5
4.7nF
R3
150k
D2
1N5822(SMC)
C6
0
PWR
9-12VDC
GND
R2
R1
68k
4.7k
C2
1000uF/16VDC
7
4
+
BD9778HFP
10uF/10V/1206
220uF/10V/tant
+
EN/SYNC
GND
FB
NETLIGHT
C7
C8
1000uF/6.3V/8x12/low_ESR
1
C14
C17
+
+
+
2
R8
33k
Q1
BC817
+
AGND_E
ON
OLIMEX LTD, BULGARIA, 2013
FPGA/CPLD
