2.1 SIM808 Module feature
Quad-Band GSM 850/900/1800/1900MHz
GPRS multi-slot class 12/10
GPRS mobile station class B
Compliant to GSM phase 2/2+
-Class 4 (2 W 850/900 MHz)
-Class 1 (1 W 800/1900MHz)
Control via AT commands (3GPP TS 27.007,27.005 and SIM Com enhanced AT Commands)
Supply voltage range:3.4v~4.4v
Low power consumption
GPS Receiver type
22tracking/66 acquisition-channel GPS L1 C/A code
Sensitivity
Tracking: -165 dBm
Cold starts: -147 dBm
Time-To-First-Fix
Cold start: 30s (typ)
Warm start: 28s (typ)
Hot start: 1s (typ)
Accuracy
Horizontal Position: <2.5m CEP
Note: PWRIN range is from 5.0V to 10V, 5.0V is recommended,
TXD /RXD are TTL level which can be directly connected with MCU.
3.1 Pin definition of 6pin connector
Pin name |
Pin number |
Mark on PCB |
Description |
Comment |
SLEEP |
0 |
S |
control module into sleep mode |
Connect with DTR via R124 |
GND |
1,6 |
G |
GND |
|
PWRIN |
2 |
V |
The power supply |
5V-10V |
PWRKEY |
3 |
K |
Power down |
Shorted with GND via R104 by default |
TXD |
4 |
T |
Transmit Data |
TTL Series data Output |
RXD |
5 |
R |
Receives Data |
TTL Series data Input |
3.2How to use TXD and RXD (Default baud rate is 9600bps)
4.1 Installing GSM antenna,GPS antenna and SIM card for BK-SIM808 Board,
Feed power supply to PWRIN pin, LED indicator D102 will be lighted. (Note: PWRIN range is from 5.0V to 10V. 5.0V is recommended)
4.2 D100 LED indicator, Blink quickly shows un-registration network,Blink slowly shows registration successful.
(Note: Should confirm whether SIM card is inserted)