2 3

0100000072134

GSM3 click™ manualver 1.00

click™

BOARDwww.mikroe.com

2. Soldering the headers

1. Introduction

3. Plugging the board in

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.

4. Essential features

The underside of GSM3 click™ holds the SIM card slot. Aside from that the click™ has the

following additional features: audio input/output connection pad (for microphone

and earphones, can also be used as an FM

antenna). The STM800H module supports

Bluetooth so the click™ has an active

2.4GHz antenna. A connector for an external GSM antenna is also provided.

Two indication LEDs signal the operating

and network status of the module.

1

GSM3 click™ carries SIM800H, a quad-band

(850/900/1800/1900MHz) GSM/GPRS

module that transmits voice, sms and data

information. The board communicates

with the target board MCU through the

following mikroBUS™ lines: Tx and Rx

(UART), RST (reset), GP1 (status indicator),

GP2 (RTS), GP3 (GPIO1), GP4 (PWRKEY,

used to power on/off the module) and GP5

(CTS). GSM3 click™ is designed to use 3.3V

and 5V I/O voltage levels.

GSM3 click™

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 © 2014 MikroElektronika. All rights reserved.

5. GSM3 click™ board schematic

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.

Resolder the onboard zero ohm SMD jumper to select between 3.3V or 5V I/O voltage levels (soldered in the 3.3V position by default).

6. SMD jumpers

ANRSTCSSCK

MOSIMISO

+3.3VGND

PWMINT

RXTX

SCLSDA+5VGND

MIKROBUS DEVICE CONN.

GSM ANT

1

5

237

48VCC

GND

RSTCLKIO

CD2CD1

U4

SIM_CARD

LD1

LD2 LD3

R2100K

+5V

+5V

R12K2

GND

+5V

R310K

R41K5

E2

10uF

GND GND

Vg sm

GND

C2

100nF

GND

GND

C4

100nF

VDD_EXT

GND GND

GND GND

Q1BC846R5

1K

GND

R6100K

GND

7654321

22212019181716151413121110

98

23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

45464748495051525354555657585960616263646566

67686970717273747576777879808182838485868788

VBATGNDGPIO1STATUSBPI_BUSIGNDVBUSGNDMIC2PMIC2NSPK2NMIC1NSPK1NSIM_DATASIM_RSTVSIMFM_ANT_PVDDEXTUSB_DMCOL0COL3COL2

PCMINPCMSYNC

NETLIGHTROW4ROW0ROW2ROW1

USB_DPGND

FM_ANT_NVRTC

SIM_CLKSIMPRE

SPK1PMIC1PSPK2P

ADCRESET

PWRKEYISINK0ISINK1

GND

RO

W3

CO

L4C

OL1

PWM

GPI

O2

GPI

O3

PCM

CLK

PCM

OU

TR

XDTX

DR

TSC

TSG

ND

BT_A

NT

GN

DG

ND

GN

DA

NT

GN

DV

BAT

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DSD

ASC

LG

ND

GN

DG

ND

UA

RT_

DC

DU

AR

T_D

TRU

AR

T_R

IG

ND

SIM800H

U1SIM800H

GNDQ3BC846R12

1K

GND

R13100K

GND

VCC

R143K3

Q4BC846R15

1K

GND

R16100K

GND

VCC

R173K3

Vgsm

GND

R9 22R10 22R11 22

C7

22pF

GND GND

VCC

C1100nF

E1

10uF

E3

470uF

C3

100nF

GND GND

Vg sm

GND

GND

C5

33pF

C6

10pF

GND

VDD_EXT

GND

STATRSTRTSGPIO1

CTSTXDRXD

!GPIO1

!RXD!TXD!RTS!CTS!STAT

GPIO1

RXDTXDRTSCTS

STAT

PWRKEY

!PWRKEY

!GPIO1!STAT

!STAT

SIM_DATASIM_RST

FM_ANT_P

!RXD

!TXD

!RTS

!CTS

BT_A

NT

GSM

_AN

T

NETLIGHT

NETLIGHT

SIM_CLKSIMPRE

SIMPRE

GND

PWRKEY

!PWRKEY

SIM_VCCSIM_RST

SIM_DATASIM_CLK

GSM_ANT

BT_ANT

E410uFE510uF

SIM_VCCFM_ANT_PMIC+MIC+

EAR+

EAR+

L1270nH

GND

MIC-

E610uF

MIC-

Q2BC846R7

1K

GND

R8100K

GND

RST

!RST

!RST

D1

C8

1uF

FP1

FERRITE

C9

NP

C10

NP

GND

A1

Rufa_2.4GHz_LEFT

GND

Audio+FM antenna (earphone)connection pads

1234

HD1

AD

J5

VO

UT

4G

ND

3V

IN2

GND

6

SHD

N1

U2MCP1826T

12345678 9

10111213141516

A1VCCAA2A3A4A5A6OE

B5B6

B1VCCB

B2B3B4

GND

TXB0

106

U3

TXB0106

R18

0R

GND

+5V

+3.3V

+3.3V 1 2 3

1 LEAR - left earphone

2 REAR - rear earphone

3 MIC - microphone

4 GND

HD1

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