mikroElektronika GSM2 click User manual

1. Introduction
Once you have soldered the headers your
board is ready to be placed into desired
mikroBUS™ socket. Make sure to align the
cut in the lower-right part of the board
with the markings on the silkscreen at the
mikroBUS™ socket. If all of the pins are
aligned correctly, push the board all
the way into the socket.
3. Plugging the board in
2 3
2. Soldering the headers
1
4. Essential features
Turn the board upward again. Make sure
to align the headers so that they are
perpendicular to the board, then solder the
pins carefully.
Turn the board upside down so that
bottom side is facing you upwards. Place
shorter parts of the header pins in both
soldering pad locations.
Before using your click board™, make sure
to solder 1x8 male headers to both left
and right side of the board. Two 1x8 male
headers are included with the board in
the package.
click
BOARD
www.mikroe.com
GSM2 click Manual
ver. 1.01
0 100000 023143
GSM2 Click™ is an accessory board in
mikroBUS™form factor. It’s a compact and
easy solution for adding GSM module to
your design. It features Quectel M95 GSM
module, audio connector, SIM card socket
as well as SMA antenna connector. GSM2
Click™ communicates with target board
microcontroller via mikroBUS™ UART (Tx,
Rx), PWM, INT, AN, RST and CS lines. The
board is designed to use 3.3V and 5V I/O
voltage levels. LED diode (GREEN) indicates
the presence of power supply.
GSM2 click
GSM2 Click™with it’s Quectel M95 IC is ideal
for mobile devices. The Quectel M95 is a
quad-band GSM/GPRS engine that works at
frequencies of GSM850MHz, GSM900MHz,
DCS1800MHz or PCS1900MHz with 85.6
kbps GPRS data transfer. It supports
internet service protocols, such as TCP/IP,
UDP, FTP and PPP.

8. Support
MikroElektronika off ers Free Tech Support
(www.mikroe.com/esupport) until the
end of product lifetime, so if something goes
wrong, we are ready and willing to help!
7. Code Examples
.com
Once you have done all the necessary
preparations, it’s time to get your click
board up and running. We have provided
the examples for mikroC, mikroBasic and
mikroPascal compilers on our Libstock
website. Just download them and you are
ready to start.
.com
5. GSM2 Click™ Board Schematic
+3V3
E5 10uF
RTS
C7 100nF
FP1
FERRITE BEAD
1
5
2
3
7
4
8
VCC
GND
RST
CLK
IO
CD2
CD1
U3
SIM_CARD
CN1
ANTENNA
2
4
1
3
CN3
ST-328B-3
RXD
TXD
E4 470uF/10V
CTS
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
A1
VCCA
A2
A3
A4
A5
A6
OE
B5
B6
B1
VCCB
B2
B3
B4
GND
TXB0106
U2
TXB0106
Vgsm
+5V
!RTS
!CTS
!RXD
!TXD
R13
2K2
LD1
PWR
J1
+5V
+3V3VCC
C6 100nF
VDD_EXT
Vgsm
!STAT NET_LED
C5 33pF
C4 33pF C3 33pF
SIM_VCC
SIM_RST
SIM_CLK
SIM_IO
SIM_VCC
SIM_RST
SIM_CLK
SIM_IO
VCC
R3
1K
Q1
BC846
R4
100K
LD2
VCC
R1
3K3
R5
1K
Q2
BC846
R6
100K
LD3
VCC
R2
3K3
NET_LED
!RXD
!TXD
!RTS RTS
RXD
TXD
CTS
E3 470uF/10V
AGND
MIC+
EAR+
EAR+
MIC+
E1
10uF
E2
C8
100nF
AGND
AN
RST
CS
SCK
MOSI
MISO
+3.3V
GND
PWM
INT
RX
TX
SCL
SDA
+5V
GND
1
2
3
4
5
6
7
8
9
10
11
12 13
14 15 16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
AGND
MIC2+
MIC2-
MIC1+
MIC1-
SPK1-
DTR
RI
RXD
NC NC
SPK1+
LOUDSPK-
LOUDSPK+
PWRKEY
EMG_OFF
STAT
NETLD RXDdbg
TXDdbg NC VDD_EXT
TXD
CTS
RTS
DCD
SIM_RST
VBAT
SIM_IO
SIM_VDD
SIM_CLK
SIM_GND
VRTC
VBAT
GND GND
37
38
39
40
GND GND GND
ANT
QUECTEL M95
41 NC 42 NC
U1
QUECTEL M95
SIM_GND
R7
E6
10uF
SIM_GND
C2
33pF
C9
33pF
R12
1K
Q4
BC846
R14
100K
PWRKEY
!PWRKEY
PWRKEY
!PWRKEY
!RI
!RI RI
RI
R10
2K2
VDD_EXT
C15
33pF
C11
33pF
C13
33pF
C10
10pF
C14
10pF
C12
10pF
MIC-
AGND
MiC-
!STAT
STAT
STAT!STAT
R9
1K
!CTS
+5V
E7
10uF
R8
100K
R11
10K
Vgsm
C16
2.2uF
VDD_EXT C1
2.2uF
6
2
3
4
5
SHDN GND VOUT ADJ
1
VIN
GND
U4
MCP1826
R15
470
MIKROBUS DEVICE CONN.
1234
1 2 3 4Pin Number
Description Left Audio Right Audio Microphone Common/GND
MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document.
Specifi cation and information contained in the present schematic are subject to change at any time without notice. Copyright © 2012 MikroElektronika. All rights reserved.
6. SMD Jumpers
There is one zero-ohm SMD jumper J1 used to
select whether 3.3V or 5V I/O voltage level is
used. Jumper J1 is soldered in 3.3V position by
default.