Introduction; Sim800C Overview; Sim800C; Sim800C Key Features - SIM Tech SIMCom SIM800C Hardware Design

1. Introduction

This document describes SIM800C hardware interface in great detail. The document can help customer to
quickly understand SIM800C interface specifications, electrical and mechanical details. With the help of this
document and other SIM800C application notes, customer guide, customers can use SIM800C to design various
applications quickly.

2. SIM800C Overview

SIM800C is a quad-band GSM/GPRS module that works on frequencies GSM850MHz, EGSM900MHz,
DCS1800MHz and PCS1900MHz. SIM800C features GPRS multi-slot class 12/class10 (optional) and supports
the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.
With a tiny configuration of 17.6*15.7*2.3mm, SIM800C can meet almost all the space requirements in
customer applications, such as smart phone, PDA and other mobile devices.
SIM800C is a SMT package with 42 pads, and provides all hardware interfaces between the module and
customers' boards.

One serial port and one full modem serial port;

One USB, the USB interface can debug, download software;

One audio channel which include a microphone input and a speaker output;

Programmable general purpose input and output;

One SIM card interface.
SIM800C is designed with power saving technique so that the current consumption is as low as 0.7mA in sleep
mode.

2.1. SIM800C

Table 1: Module information
GSM
BT
FLASH
RAM

2.2. SIM800C Key Features

Table 2: SIM800C key features
Feature
Power supply
Power saving
Frequency bands
SIM800C_Hardware_Design_V1.00
SIM800C
850,900,1800 and 1900MHz
Option
24Mbit
32Mbit
Implementation
3.4V ~4.4V
Typical power consumption in sleep mode is 0.7mA (AT+CFUN=0 )

Quad-band: GSM 850, EGSM 900, DCS 1800, PCS 1900. SIM800C can
search the 4 frequency bands automatically. The frequency bands can also be
set by AT command "AT+CBAND". For details, please refer to document [1].
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Smart Machine Smart Decision
2014-10-30