2 3

1

4. Essential features

GSM2 click™ with its 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.

ver. 1.01aGSM2 click™ manual

0 100000 026847

click™

BOARDwww.mikroe.com

3. Plugging the board in

2. Soldering the headers

Once you have soldered the headers

your board is ready to be placed into the

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 the pins are

aligned correctly, push the board all

the way into the socket.

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

the bottom side is facing you upwards.

Place shorter pins of the header into the

appropriate soldering pads.

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.

1. Introduction

GSM2 click™

GSM2 click™ is an accessory board in

mikroBUS™ form factor. It’s a compact and

easy solution for adding a GSM module to

your design. It carries a Quectel M95 GSM

module, audio connector, SIM card socket as

well as an 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 a power supply.

5. GSM2 click™ board schematic

+3V3

E510

uF

RTS

C7

100n

FFP1

FERRITE BEAD

1

5

237

48VCC

GND

RSTCLKIO

CD2CD1

U3

SIM_CARD

CN1ANTENNA

2

4

1

3

CN3

ST-328B-3

RXDTXD

E447

0uF/

10V

CTS

12345678 9

10111213141516A1

VCCAA2A3A4A5A6OE

B5B6

B1VCCB

B2B3B4

GND

TXB0

106

U2

TXB0106

Vgsm

+5V

!RTS!CTS

!RXD!TXD

R132K2

LD1PWR

J1

+5V

+3V3VCC

C6

100n

F

VDD_EXT

Vgsm

!STA

TN

ET_L

EDC

533

pF

C4

33pF

C3

33pF

SIM_VCCSIM_RST

SIM_CLKSIM_IO

SIM_VCCSIM_RSTSIM_CLKSIM_IO

VCC

R3

1K

Q1BC846

R4100K

LD2

VCC

R13K3

R5

1K

Q2BC846

R6100K

LD3

VCC

R23K3

NET_LED

!RXD!TXD

!RTS RTS

RXDTXDCTS

E347

0uF/

10V

AGND

MIC+

EAR+

EAR+MIC+

E1

10uF

E2

C8100nF

AGND

ANRSTCSSCK

MOSIMISO

+3.3VGND

PWMINT

RXTX

SCLSDA+5VGND

12345

6789

1011

12 13 14 15 16 17 18 19 20

212223242526

2728293031

3233343536

AGNDMIC2+MIC2-MIC1+MIC1-

SPK1-

DTR

RI

RXD

NC

NC

SPK1+LOUDSPK-LOUDSPK+PWRKEYEMG_OFF

STA

TN

ETLD

RXD

dbg

TXD

dbg

NC

VDD

_EXT

TXDCTSRTSDCD

SIM_RST

VBA

T

SIM_IO

SIM_VDD

SIM_CLKSIM_GND

VRTC

VBA

T

GN

DG

ND

37383940

GN

DG

ND

GN

DA

NT

QUECTEL M95

41N

C42

NC

U1QUECTEL M95

SIM_GND

R7

E610uF

SIM_GND

C233pF

C933pF

R12

1K

Q4BC846

R14100K

PWRKEY

!PWRKEY

PWRKEY

!PWRKEY

!RI!RI RI

RI

R102K2

VDD_EXT

C1533pF

C1133pF

C1333pF

C1010pF

C1410pF

C1210pFMIC-

AGND

MiC-

!STAT

STAT

STAT!STAT

R91K

!CTS

+5V

E710uF

R8100K

R1110K

Vgsm

C162.2uF

VDD_EXT C1

2.2uF

62 3 4 5

SHD

N

GN

DVO

UT

AD

J

1

VIN

GNDU4

MCP1826

R15470

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. Specification 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.

8. Support

7. Code examples

MikroElektronika offers free tech support (www.mikroe.com/support) until the end

of the product’s lifetime, so if something

goes wrong, we’re ready and willing to help!

Once you have done all the necessary

preparations, it’s time to get your click™ board

up and running. We have provided examples

for mikroC™, mikroBasic™ and mikroPascal™

compilers on our Libstock website. Just

download them and you are ready to start.

.com