SIM800L GSM Module
The SIM800L is a GSM module from Simcom that gives any microcontroller GSM functionality, meaning it can connect to the mobile network to receive calls and send and receive text messages, and also connect to the internet using GPRS, TCP, or IP. Another advantage is that the board makes use of existing mobile frequencies, which means it can be used anywhere in the world.
SIM800L Pinout Configuration
|
Pin Number |
Pin Name |
Description |
|
1 |
NET |
External antenna attachment pin |
|
2 |
VCC |
Power supply pin, 3.4V to 4.4V input |
|
3 |
RST |
Reset pin, pull low for 100ms to perform hard reset |
|
4 |
RXD |
Serial data input |
|
5 |
TXD |
Serial data output |
|
6 |
GND |
Module ground reference |
|
7, 8 |
SPK |
Speaker differential output |
|
9, 10 |
MIC |
Microphone differential input |
|
11 |
DTR |
Serial data terminal ready pin, pull high to enable sleep mode |
|
12 |
RING |
Interrupt output, active low |
Features and Specifications
- Full modem serial port
- Two microphone inputs and speaker output
- SIM card interface
- Supports FM and PWM
- Sleep mode with 0.7mA current
Note: Complete technical details can be found in the SIM800L datasheet given at the end of this page.
Equivalent For SIM800L:
SIM808
Other GSM Modules:
SIM900, SIM908
How To Use SIM800L GSM Module
The SIM800L is a GSM module with a serial interface. It can send and receive text messages and receive phone calls. It can also connect to the internet and receive FM signals. The SIM800L can be connected to a microcontroller using the serial UART interface, and in the example shown below, connected to an Arduino.
The module recognizes AT commands, which can be used to do things like check signal strength, get the SIM card number, check the network connection and battery state, in addition to reading texts, making and receiving calls.
Applications
- Home automation
- Emergency systems
- Remote sensing
- Communication
2D Model and Dimensions
If you are designing a PCB or Perf board with this component then the following picture from the Datasheet will be useful to know its package type and dimensions.
