SimCom SIM7020C User manual

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SIM7020 Series SUB Kit_User Guide
Version:1.01
Release Date: Aug 08, 2018
Instructions

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About Document
Document Information
Document
Title
SIM7020 Series SUB Kit_User Guide
Version 1.01
Document Type
Instructions
Document Status Released/Confidential
Revision History
Revision Date Owner Status / Comments
1.00 Jun11, 2018 Ming,Zhu First Release.
1.01 Aug 08, 2018 Light, Wu Revised
Related Documents
SIM7020 Hardware Design_V1.02
SIM7020 Series_AT Command Manual_V1.01
SIM7020 Series_Low Power Mode_Application Note_V1.01
SIM7020 Series_TCPIP_Application_Note_V1.00
This document applies to the following products:
Name Type Size (mm) Comments
SIM7020C NB 17.6*15.7 Band 1/3/5/8
SIM7020E NB 17.6*15.7 Band 1/3/5/8/20/28
Copyrights
This document contains proprietary technical information which is the property of SIMCom Wireless. Copying of this document
and giving it to others and the using or communication of the contents thereof, are forbidden without express authority.
Offenders are liable to the payment of damages. All rights reserved in the event of grant of a patent or the registration of a
utility model or design. All specification supplied herein are subject to change without notice at any time.

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Contents
About Document ...................................................................................................................2
Document Information..............................................................................................................2
Revision History.........................................................................................................................2
Related Documents...................................................................................................................2
Contents................................................................................................................................3
1 Purpose of this document....................................................................................................4
2 Evaluation Board Overview.................................................................................................. 4
2.1 SIM7020SUB Kit Overview ..................................................................................................4
2.2 Interface Introduction .........................................................................................................5
3 Installations and Communication.........................................................................................7
3.1 Driver installation................................................................................................................7
3.1.1 USB-to-UART interface driver installation ................................................................7
3.1.2 Module USB interface driver installation .................................................................7
3.2 Accessories installation .......................................................................................................8
3.3 AT command Communication .............................................................................................8
3.3.1 Power on device.......................................................................................................8
3.3.2 Communication through UART interface .................................................................9
4 Firmware Update ................................................................................................................9
5 Power Consumption HW Test Set Up.................................................................................. 12
Contact................................................................................................................................ 13

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1 Purpose of this document
With SIM7020 SUB Kit, developer could verify each function quickly and easily.
This document is aim to introduce every interface usage of this SUB kit, and send AT command to
demo module functions.
2 Evaluation Board Overview
2.1 SIM7020SUB Kit Overview
Here is an overview of the total SUB Kit package.
SUB kit package list is following,
1) SIM7020x-SUB (x stands for C/E)
2) Micro USB cable
3) LTE antenna
Here is the bottom view of SIM7020x-SUB.

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In order to get proper part to do the evaluation test, here is brief list for SIM7020x-SUBKIT part
numbers.
Kit type Part Number Comments
SIM7020C-SUBKIT S2-107ZF For China
SIM7020E-SUBKIT S2-107ZG For Europe, Australia and South Asia etc.
2.2 Interface Introduction
From above overview on the SIM7020x-SUB, we can see many signal interfaces, communication
ports and antenna interface. Now, we will describe them in detail.
Index Position Description
A
Uxxx SIM7020x Module
B
SW1 PWRKEY Button
C
J400 SIM Card holder
D
J204 1. UART portsof SIM7020x, for AT communication and FW update.
2. Power Supply
E
SW2 Power Switch (Left is ON, PWR+ red LED light)
F
J104 USB port of SIM7020x, for debugging
G
J3 LTE antenna SMA connector
H
J1 Reset and GND reserve locations, for resetting the module
I
J101 DTR and VDD_EXT reserve locations, for sleep mode (AT+CSCLK=1)
J
J4 RTC_EINT and GND reserve locations, for waking up module from the
PSM mode

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Note: For the detail about SIM7020 SUB board schematic, please contact with SIMCom Support
team.

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※Notice
Module VBAT range is from 2.1V to 3.6V, typical is 3.3V recommended.
Module GPIO pins are at 1.8V logical level. Cannot be connected to external 3.0V or higher
level signals directly.
SIM7020 series modules are NB1 only, without GNSS technology.
3 Installations and Communication
3.1 Driver installation
There are two USB jacks, one is USB to UART (position D), and the other one is USB (position F).
3.1.1 USB-to-UART interface driver installation
This USB-to-UART chipset on board is from Silicon labs.
Here is the driver link.
https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
After driver installed properly and completely, there are two virtual USB ports, for example
COM23 and COM24 as below.
Interface Number SIM7020 UART Comments
Enhanced COM 24 UART1 Full mode for AT communication
Standard COM 23 UART2 No hardware flow control, for FW upgrade
3.1.2 Module USB interface driver installation
SIM7020 Chipset is from MTK (MediaTek). SIMCom provide proper driver to developer, please

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contact SIMCom Support Team.
After USB driver installed properly and completely, there will be 2 virtual ports, debug port and
modem port.
USB interface is used for taking genie (debug) log only.
Notes: For the detail, please refer to “SIM7020 Series_Genie_Logging_Tool_User_Guide_V1.0”.
3.2 Accessories installation
Now, in order to do the functional test, necessary accessories need to be installed into SIM7020
SUB board.
1) Insert NBIOTSIM card to sim card slot (position C);
2) Install LTE antenna (position G);
3) Insert micro USB cable to USB jack (position D) for power supply and UART (AT and FW
update) communication;
4) Insert micro USB cable to USB jack (position F) for taking genie log. (Option)
3.3 AT command Communication
3.3.1 Power on device
1) Switch “Power Switch” (Position E) to Left, then PWR+ red LED will light, which means VBAT
power is on.
2) Press “PWRKEY” button (Position B) for one second to power up SIM7020.
Now PWR+ LED light is solid on, while NET+ LED light is blinking with below behaviors.
NET+ (Network LED)
Status Description
64ms on, 800ms off Network scanning, not registered
64ms on, 3000ms off Registered network (PS service)
64ms on, 300ms off Data communication
OFF Power off or in PSM mode

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3.3.2 Communication through UART interface
SIM7020 UART communication supports auto baud rate, as well as other baud rates up to 3Mbps.
Here take Putty for example, configure serial port with COM24, 115200bps-8-1-N.
Interface Number SIM7020 UART Comments
Enhanced COM 24 UART1 Full mode for AT communication
Standard COM 23 UART2 No hardware flow control, for FW upgrade
4 Firmware Update
1), Insert micro USB cable to USB jack (position D) and connect to the PC.
2), Open Windows flash tool SIM7020 QDL V1.00 Only for Update as show below.

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FW update Tool
3), Select “UART” and baud rate “921600”.
4), Double click the “COM” port part and enter the right COM port number (23 in following
example), the “Standard COM port” is used for FW update.
5), Click “Load” button and assign correct file path (.cfg file is inside the FW package).
6), Switch “Power Switch” (Position E) to Left, then PWR+ red LED will light, which
means VBAT power is on.

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7), Press “Start” button , then press the “PWRKEY” button for one
second. And then it will do the FW update automatically.
FW update ongoing
FW update finished

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5 Power Consumption HW Test Set Up
1), Delete R205 on SIM7020 SUB board
2), Connect external power supply to VBAT & GND pads (for SIM7020 module only)
Notes: For the detail, please refer to “SIM7020 Series_Low Power Mode_Application
Note_V1.01”.

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Contact
Shanghai SIMCom Wireless Solutions Ltd.
Address: Building B, No.633 Jinzhong Road, Changning District, Shanghai P.R.China 200335
Tel: [phone]
Email: [email protected], [email protected]
Website: www.simcomm2m.com
Technical Support
Email: [e-mail]