SimCom SIM900 User Manual
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Also See for SIM900:
- Hardware design (59 pages) ,
- Reference design manual (16 pages) ,
- Operation user's manual (10 pages)
Table of Contents
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SIM90
Package
e contents:
SIM900A GS
SM MODEM
DOCUMENT
TATION CD.
Feature
es:
Supply powe
er: DC 9V to
Onboard Fea
atures:
1. O
Onboard Pow
2. O
Onboard indic
3. O
Onboard prov
manual) using
m
4. O
Onboard DB9
5. 3
pin male he
m
microcontroll
6. O
Onboard Aud
7. O
Onboard PWM
00/900
0AGSM
with Antenn
na.
12V (DC 9V t
typical) NOT
wer ON & Net
twork indica
cator LED &
buzzer for in
vision to sele
ect the powe
g the jumper
r with onboa
9 connector f
for connectin
eader (TTL) in
nterface for c
er.
io (speaker a
and microph
M and ADC c
channels(SIM
M MO
ODEM
M
TE: Recomme
ended powe
tor LED
ncoming mes
ssage & call i
er on of SIM9
900A (either
ard switch fo
r manual PO
ng modem d
irectly to com
connecting S
SIM900 direc
hone) interfa
ce pins.
M900A PWM
and ADC PIN
r supply DC
9V/3A
indication
automatic o
or
OWER‐ON.
mputers seri
ial port.
ctly with
NS)
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Table of Contents
Related Manuals for SimCom SIM900
Summary of Contents for SimCom SIM900
- Page 1 OWER‐ON. 4. O Onboard DB9 9 connector f for connectin ng modem d irectly to com mputers seri ial port. 5. 3 pin male he eader (TTL) in nterface for c connecting S SIM900 direc ctly with microcontroll er. 6. O Onboard Aud io (speaker a and microph hone) interfa ce pins. 7. O Onboard PWM M and ADC c channels(SIM M900A PWM and ADC PIN NS) ...
- Page 2 Power Indic cator LED: M odem powe r indicator L ED. EXT‐EN: Exte ernal enable es pin to turn n ON or OFF S SIM900A mo odule with ex xternal contr rolling circuit. S/W: Onboa ard switch to o turn ON or r OFF SIM900 0A module m manually. Power ON s election jum mper: To sele ect the powe er ON mode o of the SIM90 00A (Manual or Automatic) RI LED and B Buzzer: Incom ming messag ge and call in ndicator LED and buzzer. State I Response ...
- Page 3 State SIM900 function Off SIM900 is not running 64ms On/ 800ms Off SIM900 does not find the network 64ms On/ 3000ms Off SIM900 find the network 64ms On/ 300ms Off GPRS communication 10. ADC and PWM Pins: ADC and PWM Pins of SIM900A.(Refer page 9,10 for ADC and PWM commands) 11. Audio Interface: Audio Pins (Speaker and microphone pins) of SIM900/900A. 12. SIM Interface: SIM Card holder Interface. 13. Vout: Regulated 4.2V output voltage for external application circuit. ...
- Page 4 POWERI ING SIM900/ /900A MOD DEM: POWERING SIM900/900 0A Modem i n Automatic c Mode: Step 1: Put the jum per between n ST & AUT P PINS. Step 2: Connect one e end of the serial Cable at the DB9 s serial connec ctor of the m modem and another end at comp puters serial port. Step 3: I Insert a valid d SIM card in...
- Page 5 POWERING SIM900/900 0A modem in n Manual M Mode: Step 1: P Put the jump per between ST & MAN P PINS. Step 2: C Connect one e end of the s serial Cable a at the DB9 se erial connect tor of the mo odem and an nother end at c omputers se erial port. Step 3: I Insert a valid d SIM card in the onboard d SIMCARD h holder. Step 4: : : Apply the 9...
- Page 6 Conn necting g SIM90 00A mo odem t to Com puter Step 1: c configure th e Modem fo or either man nual or auto omatic powe er ON mode using on boa ard jumper and other se etting as exp plained befo re in POWE ERING SIM90 00/900A Mod dem. Step 2: O Open the co mputers hyp per terminal l application n, to launch t the applicati ion goto Start>Al ll programs> >Accessories s>Communic cations>hype er terminal ...
- Page 7 Now sele ect the COM M port perTerminal Setting ud rate: 9600 0 ta Bits: 8 Pari ity: None Stop p bits: 1 Flow w Control: N None Now clic ck on the res store default t setting and d click OK ...
- Page 8 TE: A HEX str ring such as “ “00 49 49 49 9 49 FF FF FF FF” will be s sent out thro ugh serial po ort at the b baud rate of f 115200 imm mediately aft ter SIM900 is s powered on n. The string g shall be ign ored since e it is used fo or synchroniz zation with P PC tool. Only y enter the AT T commands s through ser rial port afte er SIM900/90 00A is power red ON and u unsolicited re esult code “R RDY” is receiv...
- Page 9 DC com m mands s ...
- Page 10 WM com m mand d s ...
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