Neoway N723-EA Manuale di installazione

Hardware User Guide

Issue 1.0 Date 2022-06-02

N723-EA Hardware User Guide

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holders.

Notice

This document provides guide for users to use N723-EA.

This document is intended for system engineers (SEs), development engineers, and test engineers.

THIS GUIDE PROVIDES INSTRUCTIONS FOR CUSTOMERS TO DESIGN THEIR APPLICATIONS.

PLEASE FOLLOW THE RULES AND PARAMETERS IN THIS GUIDE TO DESIGN AND COMMISSION.

NEOWAY WILL NOT TAKE ANY RESPONSIBILITY OF BODILY HURT OR ASSET LOSS CAUSED BY

IMPROPER OPERATIONS.

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PRODUCT VERSION UPDATE OR OTHER REASONS.

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N723-EA Hardware User Guide 
Contents 
 
Copyright © Neoway Technology Co., Ltd. All rights reserved. 
iii 
 
Contents 
Safety Recommendations .......................................................................10 
About N723-EA........................................................................................ 11 
1 Product Overview........................................................................................................................11 
2 Block Diagram.............................................................................................................................11 
3 Basic Features ........................................................................................................................... 12 
Reference Standards...............................................................................15 
Module Pins.............................................................................................16 
1 Pin Layout .................................................................................................................................. 16 
2 Pin Description ........................................................................................................................... 17 
Application Interfaces ..............................................................................25 
1 Power Interface .......................................................................................................................... 25 
1.1 VBAT.................................................................................................................................. 25 
1.2 VDD_1P8........................................................................................................................... 30 
2 Control Interfaces....................................................................................................................... 30 
2.1 PWRKEY_N ...................................................................................................................... 31 
2.2 PWRKEY ........................................................................................................................... 32 
2.3 USB_BOOT ....................................................................................................................... 36 
2.4 SLEEP ............................................................................................................................... 37 
3 Peripheral Interfaces .................................................................................................................. 39 
3.1 USB ................................................................................................................................... 39 
3.2 UART................................................................................................................................. 41 
3.3 USIM.................................................................................................................................. 45 
3.4 SD/eMMC .......................................................................................................................... 47 
3.5 I2S ..................................................................................................................................... 48 
3.6 SPI..................................................................................................................................... 49 
3.7 I2C ..................................................................................................................................... 50 
4 Network and Connection............................................................................................................ 51 
4.1 Ethernet ............................................................................................................................. 51 
4.2 SDIO/WLAN ...................................................................................................................... 53 
5 GPIO interfaces.......................................................................................................................... 55 
6 RF Interface................................................................................................................................ 55 
6.1 ANT_MAIN/ANT_DIV Antenna Interfaces ......................................................................... 55 
6.2 Antenna Assembling.......................................................................................................... 57 
7 Multi-Function Interfaces............................................................................................................ 60 
8 Other Interfaces ......................................................................................................................... 60 
8.1 RING.................................................................................................................................. 60 
8.2 NET_LIGHT....................................................................................................................... 61 
Electrical Characteristics and Reliability..................................................62 
1 Electrical Characteristics............................................................................................................ 62 

N723-EA Hardware User Guide

Contents

6.2 Temperature Characteristics ...................................................................................................... 63

6.3 ESD Protection........................................................................................................................... 63

7 RF Characteristics ...................................................................................64

7.1 Operating Band .......................................................................................................................... 64

7.2 TX Power and RX Sensitivity ..................................................................................................... 65

8 Mechanical Characteristics......................................................................67

8.1 Dimensions................................................................................................................................. 67

8.2 Label........................................................................................................................................... 68

8.3 Packing....................................................................................................................................... 68

8.3.1 Tray.................................................................................................................................... 68

8.3.2 Moisture............................................................................................................................. 69

9 Mounting..................................................................................................70

9.1 PCB Package............................................................................................................................. 70

9.2 Application Foot Print ................................................................................................................. 71

9.3 Stencil......................................................................................................................................... 71

9.4 Solder Paste............................................................................................................................... 72

9.5 SMT Oven Temperature Profile.................................................................................................. 72

Abbreviation.............................................................................................74

N723-EA Hardware User Guide

Table of Figures

Figure 2-1 Block diagram ................................................................................................................. 12

Figure 4-1 N723-EA pin definition (top view) ................................................................................... 16

Figure 5-1 Voltage drop of the power supply. .................................................................................. 26

Figure 5-2 Recommended design 1................................................................................................. 26

Figure 5-3 Recommended design 2................................................................................................. 27

Figure 5-4 Recommended design 3................................................................................................. 28

Figure 5-5 Recommended design 4................................................................................................. 29

Figure 5-6 Reference design of startup, shutdown, and reset controlled by a button ..................... 32

Figure 5-7 Reference design of startup, shutdown, and reset controlled by an MCU..................... 32

Figure 5-8 Reference design of automatic start once powered up .................................................. 33

Figure 5-9 Startup process (by controlling PWRKEY_N)................................................................. 33

Figure 5-10 Startup process (by controlling PWRKEY) ................................................................... 34

Figure 5-11 Reset process of the module ........................................................................................ 35

Figure 5-12 Hardware shutdown process ........................................................................................ 36

Figure 5-13 Reference design of USB force download.................................................................... 36

Figure 5-14 Process of entering the sleep mode............................................................................. 37

Figure 5-15 Process of exiting from sleep mode ............................................................................. 38

Figure 5-16 Incoming call service process....................................................................................... 38

Figure 5-17 Outgoing call service process....................................................................................... 39

Figure 5-18 Reference USB connection design............................................................................... 40

Figure 5-19 Reference design of the UART connection .................................................................. 41

Figure 5-20 Recommended level shifting circuit 1........................................................................... 42

Figure 5-21 Recommended level shifting circuit 2........................................................................... 43

Figure 5-22 Recommended level shifting circuit 3........................................................................... 44

Figure 5-23 Reference design of the USIM card interface .............................................................. 45

Figure 5-24 Reference design of the USIM card (without hot-swap) interface................................ 46

Figure 5-25 Reference design of the SDC interface ........................................................................ 47

N723-EA Hardware User Guide

Table of Figures

Figure 5-26 Reference design of the I2S ......................................................................................... 49

Figure 5-27 SPI reference design .................................................................................................... 50

Figure 5-28 Reference design of the I2C......................................................................................... 51

Figure 5-29 Reference design of the RMII interface ........................................................................ 52

Figure 5-30 Reference design of the SDIO interface with a PHY chip: ........................................... 53

Figure 5-31 SDIO reference design ................................................................................................. 54

Figure 5-32 L-type network .............................................................................................................. 56

Figure 5-33 T-type network .............................................................................................................. 56

Figure 5-34 π-type network.............................................................................................................. 56

Figure 5-35 Recommended RF PCB design ................................................................................... 57

Figure 5-36 Murata RF connector encapsulation specifications...................................................... 58

Figure 5-37 RF cable connections ................................................................................................... 58

Figure 5-38 Antenna layout .............................................................................................................. 59

Figure 5-39 Layout around the antenna........................................................................................... 59

Figure 5-40 Pulse wave for an incoming call ................................................................................... 60

Figure 5-41 RING indicator for SMS ................................................................................................ 61

Figure 5-42 Driving LED with a triode .............................................................................................. 61

Figure 8-1 N723-EA dimensions (unit: mm)..................................................................................... 67

Figure 8-2 N723-EA label................................................................................................................. 68

Figure 8-3 Packing process ............................................................................................................. 69

Figure 9-1 N723-EA bottom view of PCB package (unit: mm)......................................................... 70

Figure 9-2 N723-EA recommended footprint of the pplication PCB (unit: mm) ............................... 71

Figure 9-3 Oven temperature profile................................................................................................ 72

N723-EA Hardware User Guide

Table of Tables

vii

Table of Tables

Table 2-1 Variant and frequency bands.............................................................................................11

Table 4-1 Pin description.................................................................................................................. 17

Table 4-2 Level feature..................................................................................................................... 17

Table 4-3 Pin Description ................................................................................................................. 19

Table 5-1 I2C interface parameters.................................................................................................. 50

Table 5-2 Pin definition description .................................................................................................. 60

Table 6-1 N723-EAElectrical Characteristics ................................................................................... 62

Table 6-2 N723-EA current consumption (Typical)........................................................................... 62

Table 6-3 N723-EA temperature features ........................................................................................ 63

Table 6-4 N723-EA ESD protection features.................................................................................... 63

Table 7-1 N723-EA operating bands ................................................................................................ 64

Table 7-2 N723-EA RF transmit power............................................................................................. 65

Table 7-3 GSM RX sensitivity of N723-EA....................................................................................... 65

Table 7-4 N723-EA WCDMA RX sensitivity ..................................................................................... 65

Table 7-5 LTE RX sensitivity of N723-EA......................................................................................... 66

N723-EA Hardware User Guide

About This Document

viii

About This Document

Scope

This document is applicable to N723-EA series.

It defines the features, indicators, and test standards of the N723-EA module and provides reference

for the hardware design of each interface.

Audience

This document is intended for system engineers (SEs), development engineers, and test engineers.

Change History

Issue

Date

Change

Changed By

1.0

2022-04

Initial draft

Zou Shiqiang

Conventions

Symbol

Indication

Indicates danger or warning. This information must be followed. Otherwise, a

catastrophic module or user device failure or bodily injury may occur.

Indicates caution. This symbol alerts the user to important points about using the

module. If these points are not followed, the module or user device may fail.

Indicates instructions or tips. This symbol provides advices or suggestions that

may be useful when using the module.

N723-EA Hardware User Guide

About This Document

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