SimCom SIM800 Series, Hardware Design

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Smart Machine Smart Decision
SIM800_Hardware Design_V1.10 10 2018-08-13
1. Introduction
This document describes SIM800 hardware interface in great detail.
This document can help user to quickly understand SIM800 interface specifications, electrical and mechanical
details. With the help of this document and other SIM800 application notes, user guide, users can use SIM800 to
design various applications quickly.
2. SIM800 Overview
Designed for global market, SIM800 is a quad-band GSM/GPRS module that works on frequencies GSM
850MHz, EGSM 900MHz, DCS 1800MHz and PCS 1900MHz. SIM800 features GPRS multi-slot class 12/ class
10 (optional) and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.
With a tiny configuration of 24*24*3mm, SIM800 can meet almost all the space requirements in users’
applications, such as M2M, smart phone, PDA and other mobile devices.
SIM800 has 68 SMT pads, and provides all hardware interfaces between the module and customers’ boards.

Support up to 5*5*2 Keypads.

One full function UART port, and can be configured to two independent serial ports.

One USB port can be used as debugging and firmware upgrading.

Audio channels which include a microphone input and a receiver output.

Programmable general purpose input and output.

One SIM card interface.

Support Bluetooth function.

Support one PWM.

PCM
SIM800 is designed with power saving technique so that the current consumption is as low as 1.2mA in sleep
mode.
SIM800 integrates TCP/IP protocol and extended TCP/IP AT commands which are very useful for data transfer
applications. For details about TCP/IP applications, please refer to document [11].
2.1. SIM800 Key Features
Table 1 : SIM800 key features
Feature Implementation
Power supply 3.4V ~4.4V
Power saving Typical power consumption in sleep mode is 1.2mA ( BS-PA-MFRMS=9 )
Frequency bands

SIM800 Quad-band: GSM 850, EGSM 900, DCS 1800, PCS 1900. SIM800 can
search the 4 frequency bands automatically. The frequency bands also can be set
by AT command “AT+CBAND”. For details, please refer to document [1] .

Compliant to GSM Phase 2/2+
Transmitting power

Class 4 (2W):GSM850,EGSM900

Class 1 (1W):DCS1800,PCS1900
GPRS connectivity

GPRS multi-slot class 12
（
default
）