SimCom SIM7022-EVB User manual

SIM7022-EVB
User Guide
NB Module
SIMCom Wireless Solutions Limited.
SIMCom Headquarters Building, Building 3, No. 289 Linhong Road
Changning District, Shanghai P.R.China
Tel: [phone]
[e-mail]
www.simcom.com

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Document Title:
SIM7022-EVB User Guide
Version:
V1.00
Date:
2021-07-21
Status:
Released
GENERAL NOTES
SIMCOM OFFERS THIS INFORMATION AS A SERVICE TO ITS CUSTOMERS, TO SUPPORT
APPLICATION AND ENGINEERING EFFORTS THAT USE THE PRODUCTS DESIGNED BY SIMCOM.
THE INFORMATION PROVIDED IS BASED UPON REQUIREMENTS SPECIFICALLY PROVIDED TO
SIMCOM BY THE CUSTOMERS. SIMCOM HAS NOT UNDERTAKEN ANY INDEPENDENT SEARCH
FOR ADDITIONAL RELEVANT INFORMATION, INCLUDING ANY INFORMATION THAT MAY BE IN THE
CUSTOMER’S POSSESSION. FURTHERMORE, SYSTEM VALIDATION OF THIS PRODUCT
DESIGNED BY SIMCOM WITHIN A LARGER ELECTRONIC SYSTEM REMAINS THE RESPONSIBILITY
OF THE CUSTOMER OR THE CUSTOMER’S SYSTEM INTEGRATOR. ALL SPECIFICATIONS
SUPPLIED HEREIN ARE SUBJECT TO CHANGE.
COPYRIGHT
THIS DOCUMENT CONTAINS PROPRIETARY TECHNICAL INFORMATION WHICH IS THE PROPERTY
OF SIMCOM WIRELESS SOLUTIONS LIMITED COPYING, TO OTHERS AND USING THIS DOCUMENT,
ARE FORBIDDEN WITHOUT EXPRESS AUTHORITY BY SIMCOM. OFFENDERS ARE LIABLE TO THE
PAYMENT OF INDEMNIFICATIONS. ALL RIGHTS RESERVED BY SIMCOM IN THE PROPRIETARY
TECHNICAL INFORMATION ，INCLUDING BUT NOT LIMITED TO REGISTRATION GRANTING OF A
PATENT , A UTILITY MODEL OR DESIGN. ALL SPECIFICATION SUPPLIED HEREIN ARE SUBJECT TO
CHANGE WITHOUT NOTICE AT ANY TIME.
SIMCom Wireless Solutions Limited
SIMCom Headquarters Building, Building 3, No. 289 Linhong Road, Changning District, Shanghai P.R.
China
Tel: [phone]
Email: [e-mail]
For more information, please visit:
https://www.simcom.com/download/list-863-en.html
For technical support, or to report documentation errors, please visit:
https://www.simcom.com/ask/ or email to: [e-mail]
Copyright © 2021 SIMCom Wireless Solutions Limited All Rights Reserved.

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Version History
Date
Version
Description of change
Author
2021.07.21
1.00
Released
Yanping Yang

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Contents
1 Introduction....................................................................................................................................................7
1.1 Features Overview........................................................................................................................................... 7
1.2 SIM7022 EVB Top and Bottom View............................................................................................................ 8
1.3 SIM7022 Evaluation Kit.................................................................................................................................10
2 Interface Introduction.................................................................................................................................12
2.1 Power Supply..................................................................................................................................................12
2.1.1 Power Supply................................................................................................................................ 12
2.1.2 Separate Power Supply............................................................................................................... 13
2.2 (U)SIM card Interface.................................................................................................................................... 15
2.3 UART Interface............................................................................................................................................... 17
2.4 Status Indicator Light.....................................................................................................................................18
2.5 Switches and Buttons....................................................................................................................................19
2.6 Test Points....................................................................................................................................................... 20
3 Operation Method...................................................................................................................................... 25
3.1 Module Boot.................................................................................................................................................... 25
3.1.1 Module Power-on Operation.......................................................................................................25
3.2 Driver Installation............................................................................................................................................25
3.2.1 USB-to-UART Driver Installation................................................................................................26
3.3 Firmware Upgrade Process..........................................................................................................................26
3.4 AT Command Communication..................................................................................................................... 29
3.4.1 UART Serial Communication......................................................................................................30
4 Appendix...................................................................................................................................................... 31
4.1 Reference Documents...................................................................................................................................31
4.2 Terminology and Explanation.......................................................................................................................32
4.3 Safety Warning............................................................................................................................................... 33

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Table Index
Table 1：Main features..................................................................................................................................................7
Table 2: Label information description......................................................................................................................... 9
Table 3: EVB Kit.............................................................................................................................................................11
Table 4: EVB Kit.............................................................................................................................................................11
Table 5: Interface introduction.....................................................................................................................................12
Table 6: (U)SIM card interface pin definition (J102)................................................................................................ 17
Table 7: micro USB interface pin definition (J103).................................................................................................. 18
Table 8: Status indicator light description..................................................................................................................19
Table 9: switches and buttons.....................................................................................................................................20
Table 10: Test point description of J101 on EVB..................................................................................................... 22
Table 11: Pin description of location J105 on EVB.................................................................................................. 23
Table 12: The pin description of J106 on EVB......................................................................................................... 24
Table 13: The pin description of J107 on EVB......................................................................................................... 24
Table 14: USB to UART ports......................................................................................................................................26
Table 15: UART frame format......................................................................................................................................30
Table 16: UART baud rate support.............................................................................................................................30
Table 17: UART common baud rate operations.......................................................................................................30
Table 18: Reference documents.................................................................................................................................31
Table 19: Terminology and explanation..................................................................................................................... 32
Table 20: safety warning.............................................................................................................................................. 33

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Figure Index
Feature 1: SIM7022 EVB top view.............................................................................................................................. 8
Feature 2：SIM7022 EVB bottom view..................................................................................................................... 9
Feature 3: SIM7022 Evaluation kit............................................................................................................................ 10
Feature 4: EVBPower supply block diagram........................................................................................................... 13
Feature 5: EVB power interface.................................................................................................................................13
Feature 6: Module power supply reference design................................................................................................ 14
Feature 7: Module power supply separately (VBAT GND)....................................................................................15
Feature8: (U)SIM card interface reference design................................................................................................. 15
Featue 9: (U)SIM card interface pin definition (J102)............................................................................................ 16
Feature 10 : USB to UART reference design........................................................................................................... 18
Feature 11 : micro USB interface pin definition (J103)........................................................................................... 18
Feature 12 : LED status indicator light (LED101、LED102、LED103)............................................................... 19
Feature 13 : switches and buttons..............................................................................................................................20
Feature 14 : Test point location................................................................................................................................... 21
Feature 15 : The pin definition of position J101 on EVB.........................................................................................22
Feature 16 : Pin definition of location J105 on EVB................................................................................................ 22
Feature 17 : The pin definition of J106 on EVB........................................................................................................23
Feature 18 : The pin definition of J107 on EVB........................................................................................................24
Feature 19 : USB to UART ports.................................................................................................................................26
Feature 20 : Power switch and download switch status......................................................................................... 27
Feature 21 : Download interface.................................................................................................................................27
Feature 22 : Erased the software................................................................................................................................28
Feature 23 : the software download interface.......................................................................................................... 28
Feature 24 : software download interface................................................................................................................. 29
Feature 25 : software download complete................................................................................................................ 29

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1 Introduction
The purpose of this article is to introduce the interface and usage of the development kit.
Based on the SIMCom development kit, developers will quickly become familiar with and verify the software
functions of the module.
1.1 Features Overview
The main features of SIM7022 EVB are shown in the table below.
Table 1：Main features
Features
Description
Power supply
USB_VBUS：5V power supply
(U)SIM card interface
(U)SIM card：Dual voltage 1.8V/3.0V
UART interface
Two USB-to-UART interfaces, Respectively for the
main serial port and system log port
Signal indication
Three function indicator LED lights
Switches
Two switches for power supply and software
download
Buttons
Two buttons for wake-up and reset functions
respectively

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1.2 SIM7022 EVB Top and Bottom View
Feature 1: SIM7022 EVB top view

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Feature 2：SIM7022 EVB bottom view
Table 2: Label information description
Label information
Description
A
SIM7022 Module
B
Main serial port, used for AT commands and firmware upgrade
C
DBG serial port, used for software LOG capture
D
Power supply switch
E
Firmware upgrade switch
F
WAKEUP button
G
RESET button
H
Main antenna connector
J
SIM card interface
L1
Network status light
L2
Power Indicator light
L3
Power-on indicator light
T1,T2,T3,T4,T5
Test point

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1. The SIM card of the SIM7022 EVB is shown as the position "J" in the rendering. The module does
not support the hot-swappable function. Please insert the SIM card before turning on the module,
otherwise the SIM card will not be recognized successfully.
1.3 SIM7022 Evaluation Kit
Evaluation kit includes EVB board and other accessories.
The SIM7022 kit list is as follows, please ensure that all kits are complete.
1) SIM7022-EVB board；
2) MICRO USB data cable；
3) GSM\WCDMA\LTE antenna；
Feature 3: SIM7022 Evaluation kit
※ Note

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Table 3: EVB Kit
EVB Kit
Description
quantity
SIM7022 EVB
EVB board
1
GSM\WCDMA \LTE antenna
GSM\WCDMA \LTE antenna
1
MICRO USB data cable
MICRO USB data cable
1
To ensure that the module can be used normally, it is recommended to use the correct kit model. The part
numbers of SIM7022 EVB kit are shown in the table below.
Table 4: EVB Kit
EVB Kit
Part No
8EC000-SIM7022-EVBKIT
S2-109DE

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2 Interface Introduction
The interface of SIM7022 EVB is shown in the table below.
Table 5: Interface introduction
Function
Reference number
Description
(U)SIM
J102
(U)SIM card interface
UART
J103
J103 is used for AT command communication,
data transmission and firmware upgrade
J104
J104 is used for software debugging
LEDS
LED101
LED101：Network status indicator light
LED102
LED102：Power status indicator light
LED103
LED103：Power-on status indicator light
Switches
SW101
SW101：Power supply switch
SW1
SW1：Firmware upgrade switch
Buttons
SW102
SW102：RESET button
SW103
SW103：WAKEUP button
Test points
J101 J105 J106 J107
J101 J105：Power test point
J106 J107：Module signal test point
More detailed introductions about the above functions are shown in the next section.
2.1 Power Supply
2.1.1Power Supply
SIM7022 EVB is powered by micro USB, USB plug-in connection device J103, J104 can achieve 5V power
supply effect.
The power supply block diagram of SIM7022 EVB is shown in the figure below.

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Feature 4: EVBPower supply block diagram
Feature 5: EVB power interface
2.1.2Separate Power Supply
The module power supply reference design is shown in the figure below.

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Feature 6: Module power supply reference design
The test points of VBAT and GND of the module are shown in the figure below. If the module needs to be
powered separately, the resistance of R112 should be removed first, and then the VBAT and GND test
points should be externally supplied with power.

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Feature 7: Module power supply separately (VBAT GND)
1. The power supply range of the module is 2.2~4.2V, and the recommended power supply voltage is
3.3V. When the power supply voltage is lower than 3V, the radio frequency can work and the
performance of a single index may not meet the 3GPP standard.
2.2 (U)SIM card Interface
SIM7022 does not support hot-swappable function. Please make sure to insert the (U)SIM card correctly
before powering on, otherwise the card cannot be recognized.
The reference circuit of the (U)SIM card interface is shown in the figure below.
Feature8: (U)SIM card interface reference design
The pin definition of the (U)SIM card holder is shown in the figure below.
※ Note

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Featue 9: (U)SIM card interface pin definition (J102)

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Table 6: (U)SIM card interface pin definition (J102)
Pin number
Pin name
I/O
Describe
1
VCC
O
(U)SIM power supply
2
RST
O
(U)SIM reset signal
3
CLK
O
(U)SIM clock signal
4
DET
I
(U)SIM detect signal
5
GND
GND
6
VPP
Float
7
I/O
I/O
(U)SIM duplex data line
2.3 UART Interface
SIM7022 EVB provides two UART interfaces (J103, J104) by USB to UART. J103 is used as the main serial
port for AT commands, data transmission and firmware upgrade, and J104 is used as DEBUG debugging
serial port for software DEBUG debugging.
The reference circuit of USB to UART interface is shown in the figure
below.

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Feature 10: USB to UART reference design
The pin definition of the Micro USB interface is shown in the figure below.
Feature 11: micro USB interface pin definition (J103)
Table 7: micro USB interface pin definition (J103)
Pin number
Pin name
I/O
Description
1
VBUS
O
USB power supply
2
USB_DM
I\O
USB differential data negative (USB-to-UART)
3
USB_DP
I\O
USB differential data positive (USB-to-UART)
4
\
\
Float
5
GND
Ground
2.4 Status Indicator Light
There are three status indicator lights LED101, LED102, and LED103 for function indication on SIM7022
EVB.
The status indicators LED101, LED102, and LED103 are as shown in the figure below.

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Feature 12: LED status indicator light (LED101、LED102、LED103)
Table 8: Status indicator light description
LEDs number
LEDs colour
Description
LED101
Blue
Module network status indicator light
LED102
Red
VBAT power supply indicator light
LED103
Blue
Module power-on status indicator light
2.5 Switches and Buttons
There are two switches (SW101, SW1) and two buttons (SW102, SW103) on SIM7022 EVB.