Neo_M680 GPRS Module Hardware User Guide
Copyright © Neoway Technology Co., Ltd
1
About This Document
This document defines the features, indicators, and test standards of the M680 module and provides
reference for the hardware design of each interface. With
Neo_M680 GPRS Module AT Command Set
, this
user guide can help you complete wireless communication application easily.
1 Introduction to M680
M680 is a compact wireless GSM/GPRS module that supports downlink EDGE. It can provide functions of
high-quality voice, SMS, and data services and is widely used in industrial and civil fields.
1.1
Overview
Neoway M680 module adopts 83-pin LGA encapsulation and its dimensions are 18 mm x 15 mm x 2.1 mm,
which can meet most customers' requirements. It provides customers the following hardware resources:
UART interfaces, used for data communication, firmware updating and commissioning, and
supporting hardware flow control
Audio interfaces: two lines of MIC input (one differential single input and one sing-ended signal
input); EAR/SPK/REC output
10-bit ADC input, voltage ranging from 0 V to 2.8 V
Adapting to 1.8 V and 3.0 V SIM card
Supporting RING/LIGHT/DTR (sleep mode) functions
Supporting time updating and timing power-on/off
Supporting firmware updating and commissioning via USB interface
1.2
Block Diagram
The M680 module consists of baseband controller, Flash ROM, RF section, application interfaces, etc. All
sections coordinate with each other to provide such communication functions as GPRS data and voice.
The following figure shows the block diagram of M680.
