Introduction; Sim800H Overview; Sim800H Key Features - SimCom SIM800H Hardware Design Manual

1. Introduction

This document describes SIM800H hardware interface in great detail.
This document can help user to quickly understand SIM800H interface specifications, electrical and mechanical
details. With the help of this document and other SIM800H application notes, user guide, users can use SIM800H
to design various applications quickly.

2. SIM800H Overview

SIM800H is a quad-band GSM/GPRS module, that works on frequencies GSM850MHz, EGSM900MHz,
DCS1800MHz and PCS1900MHz. SIM800H 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 15.8*17.8*2.4mm, SIM800H can meet almost all the space requirements in user
applications, such as smart phone, PDA and other mobile devices.
SIM800H has 88pin pads of LGA packaging, and provides all hardware interfaces between the module and
customers' boards.
Support 5*5*2 keypads
One full modem serial port, user can configure two serial ports
One USB, the USB interfaces can debug, download software
Audio channel which includes two microphone input; a receiver output and a speaker output
Programmable general purpose input and output.
A SIM card interface
Support Bluetooth
Support FM
Support one PWM
SIM800H is designed with power saving technique so that the current consumption is as low as 0.7mA in sleep
mode.

2.1. SIM800H Key Features

Table 1: SIM800H key features
Feature
Power supply
Power saving
Frequency bands
Transmitting power
GPRS connectivity
SIM800H_Hardware_Design_V1.01
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. SIM800H 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].
Compliant to GSM Phase 2/2+
Class 4 (2W) at GSM 850 and EGSM 900
Class 1 (1W) at DCS 1800 and PCS 1900
GPRS multi-slot class 12（default）
GPRS multi-slot class 1~12 (option)
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Smart Machine Smart Decision
2013-08-20