SimCom SIM7020C, SIM7020E, SIM7020 Series Hardware Design

SIM7020 _Hardware Design_V1.02

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Document Title

Version

Date

Status

Document Control ID

SIM7020 _Hardware Design

1.02

2018-07-25

Release

SIM7020 _ Hardware Design_V1.02

General Notes

SIMCom offers this information as a service to its customers to support the application and

engineering efforts that use the products designed by SIMCom. The information provided is based

on the requirements specifically from 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, the system validation of the 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 without notice.

Copyright

This document contains the proprietary technical information which is the property of SIMCom

Limited, copying of this document, giving it to others, the using or communication of the contents

thereof are forbidden without the official authority by SIMCom. Offenders are liable to the

payment of the damages. All rights are reserved in the event of grant of a patent or the registration

of a utility model or design. All specifications supplied herein are subject to change without notice

SIM7020_Hardware_Design_V1.02 1 2018-07-25

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Table Index

Table 1: SIM7020 frequency bands and air interface .................................................................7

Table 2: General features ............................................................................................................8

Table 3: Pin definition ............................................................................................................... 11

Table 4: IO parameters definition ............................................................................................. 11

Table 5: Pin description ............................................................................................................12

Table 6: VBAT pins electronic characteristic ............................................................................16

Table 7: Recommended TVS diode list ....................................................................................17

Table 8: Power on timing and electronic characteristic ............................................................18

Table 9: Power off timing and electronic characteristic ............................................................19

Table 10: RESET pin electronic characteristic .........................................................................20

Table 11: Recommended TVS list ............................................................................................23

Table 12: SIM electronic characteristic in 1.8V mode (SIM_VDD=1.8V) ..............................24

Table 13: SIM electronic characteristic 3.0V mode (SIM_VDD=3V)......................................24

Table 14: Amphenol SIM socket pin description ......................................................................26

Table 15: NETLIGHT pin status ...............................................................................................26

Table 16: ADC electronic characteristics ..................................................................................27

Table 17: Electronic characteristic ............................................................................................27

Table 18: Conducted transmission power .................................................................................29

Table19: Maximum Power Reduction (MPR) for UE category NB1 Power Class 3 ...............29

Table 20: E-UTRA operating bands ..........................................................................................29

Table 21: CAT-NB1 Reference sensitivity (QPSK) ..................................................................30

Table 22: Trace loss ..................................................................................................................30

Table 23: Recommended TVS ..................................................................................................31

Table 24: Absolute maximum ratings .......................................................................................34

Table 25: Recommended operating ratings ...............................................................................34

Table 26: 1.8V Digital I/O characteristics* ...............................................................................34

Table 27: Operating temperature ...............................................................................................35

Table 28: Operating mode Definition .......................................................................................35

Table 29: RTC_GPIO0/RTC_EINT characteristics ..................................................................37

Table 30: Current consumption on VBAT Pins (VBAT=3.3V) .................................................37

Table 31: The ESD performance measurement table ................................................................38

Table 32: Moisture Sensitivity Level and Floor Life ................................................................40

Table 33: Baking requirements .................................................................................................40

Table 34: Tray size ....................................................................................................................42

Table 35: Small Carton size ......................................................................................................43

Table 36: Big Carton size ..........................................................................................................43

Table 37: Related Documents ...................................................................................................44

Table 38: Terms and Abbreviations ...........................................................................................46

Table 39: Safety Caution ...........................................................................................................48

SIM7020_Hardware_Design_V1.02 4 2018-07-25

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Figure Index

Figure 1: SIM7020 block diagram ..............................................................................................8

Figure 2: Pin assignment overview ...........................................................................................10

Figure 3: Dimensions (Unit: mm) .............................................................................................14

Figure 4: Footprint recommendation (Unit: mm) .....................................................................15

Figure 5: Power supply application circuit ...............................................................................17

Figure 6: Reference power on/off circuit ..................................................................................18

Figure 7: Power on timing sequence .........................................................................................18

Figure 8: Power off timing sequence ........................................................................................19

Figure 9: Reference reset circuit ...............................................................................................20

Figure 10: UART full modem ...................................................................................................21

Figure 11: UART null modem ..................................................................................................21

Figure 12: Reference circuit of level shift ................................................................................22

Figure 13: TX level matching circuit ........................................................................................22

Figure 14: RX level matching circuit ........................................................................................22

Figure 15: RI behaviour （SMS and URC report） .................................................................23

Figure 16: USB reference circuit ..............................................................................................23

Figure 17: SIM interface reference circuit ................................................................................25

Figure 18: Amphenol SIM card socket .....................................................................................25

Figure 19: NETLIGHT reference circuit ..................................................................................26

Figure 20：Power on sequence of the VDD_EXT ...................................................................27

Figure 21：Power on sequence of the VDD_3V3 ....................................................................27

Figure 22: Antenna matching circuit (MAIN_ANT) ................................................................31

Figure 23: RF trace should be far away from other high speed signal lines .............................32

Figure 24: The distance between GND to the inner conductor of SMA ...................................32

Figure 25: Top and bottom view of SIM7020 ...........................................................................39

Figure 26: The ramp-soak-spike reflow profile of SIM7020 ....................................................39

Figure 27: Recommended SMT stencil footprint outline ..........................................................41

Figure 28: packaging diagram ..................................................................................................42

Figure 29: Tray drawing............................................................................................................42

Figure 30: Small carton drawing ...............................................................................................43

Figure 31: Big carton drawing ..................................................................................................43

SIM7020_Hardware_Design_V1.02 5 2018-07-25

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Revision History

Data Version Description of change Author

2018-02-07 1.00 Original

Update figure 1,9,20,21 Update table 2,8,9,10,16, 29,30

2018-04-19 1.01

2018-07-25 1.02

Update chapter 3.5.1 Add chapter 3.5.4, 3.5.5 Add table 28

Update figure 1 Update table 2,6,21,30

Ya.li Ming.zhu

Ming.zhu

Ya. l i Ming.zhu

SIM7020_Hardware_Design_V1.02 6 2018-07-25

1 Introduction

Variants

 



B8



B28



This document describes SIM7020 hardware interface in great detail. The document can help

customer to quickly understand SIM7020 interface specifications, electrical and mechanical details.

With the help of this document and other SIM7020 application notes, customer guide, customers can

use SIM7020 to design various applications quickly.

1.1 Product Outline

The SIM7020 series modules support LTE CAT-NB1.

With a tiny configuration of 17.6*15.7*2.3mm, SIM7020 can meet almost all the space requirements

in customers’ applications, such as smart phone, PDA and other mobile devices. And the physical

dimension is compatible with the packaging of SIM800C.

Table 1: SIM7020 frequency bands and air interface

Standard

Freque

ncy

SIM7020C SIM7020E

B1

B3

B5

HD-FDD

B20

1.2 Hardware Interface Overview

The interfaces are described in detail in the next chapters include:

 Power Supply

 USB Interface

 UART Interface

 SIM Interface

 ADC

 Power Output

 GPIOs

 Antenna Interface

1.3 Hardware Block Diagram

The block diagram of the SIM7020 module is shown in the figure below.

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Feature

Implementation

Power supply

Power supply voltage 2.1～3.6V,Typ=3.3V

Current in PSM mode: 3.4uA

Radio frequency bands

Please refer to the table 1

1.4 Functional Overview

Table 2: General features

Power saving

Transmitting power

Data Transmission Throughput

Antenna

Current in sleep mode: 236uA (at+cfun=0)

LT E 23dBm

LT E CAT NB1: 26.15Kbps (DL)

LTE CAT NB1: 62.5Kbps (UL)

LTE antenna.

Figure 1: SIM7020 block diagram

SMS

SIM interface Support identity card: 1.8V/ 3V

UA RT 1 interface

SIM7020_Hardware_Design_V1.02 8 2018-07-25

MT, MO, Text and PDU mode

A full modem serial port by default

Baud rate: default:115200bps

Can be used as the AT commands or data stream channel

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Can be used for debugging and upgrading firmware

(Log port can be selected by AT

Size: 17.6*15.7*2.3mm

Support RTS/CTS hardware handshake

UA RT 2 interface

USB

Baud rate: default:115200bps

USB 1.1 interface for debugging

command.)

Firmware upgrade Firmware upgrade over UART2 interface

Physical characteristics

Weight: 1.3g±0.2g

Normal operation temperature: -30°C to + 80°C

Temperature range

Extended operation temperature: -40°C to + 85°C*

Storage temperature -45°C to + 90°C

*Note: The performance will be reduced slightly from the 3GPP specifications if the temperature

is outside the normal operating temperature range and still within the extreme operating

temperature range.

SIM7020_Hardware_Design_V1.02 9 2018-07-25

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2

3

4

5

6

7

8

9

10

11

12

1

UART1_TXD

UART1_RXD

UART1_RTS

UART1_CTS

UART1_DCD

UART1_DTR

UART1_RI

GND

VDD_3V3

GPIO0

RTC_GPIO0

RTC_EINT

14

15

16

17

18

19

20

21

13

GND

SIM_DET

SIM_DATA

SIM_CLK

SIM_RST

SIM_VDD

GND

NC

GND

35

36

37

38

39

40

41

42

34

VBAT

STATUS

NETLIGHT

VDD_EXT

PWRKEY

ADC

GND

VBAT

33

32

31

30

29

28

27

26

25

24

23

22

GND

ANT

GND

GPIO1

RESET

GND

USB_DM

USB_DP

USB_VBUS

UART2_RXD

UART2_TXD

SIM7020

TOP VIEW

2 Package Information

2.1 Pin Assignment Overview

Figure 2: Pin assignment overview

SIM7020_Hardware_Design_V1.02 10 2018-07-25

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3

UA RT 1_RTS

24

USB_VBUS

4

UART1_CTS

25

USB_DP

5

UART1_DCD

26

USB_DN

6

UART1_DTR

27

GND

19

GND

40

VDD_EXT

20

NC

41

NETLIGHT

PI

Power input

PO

Power output

AI

Analog input

AIO

Analog input/output

I/O

Bidirectional input /output

DI

Digital input

DO

Digital output

DOH

Digital output with high level

DOL

Digital output with low level

PU

Pull up

Table 3: Pin definition

Pin No.

Pin Name

Pin No.

Pin Name

1 UART1_TXD 22 UART2_TXD

2 UART1_RXD 23 UART2_RXD

7 UA RT 1_RI 28 RESET

8 GND 29 GPIO1

9 VDD_3V3 30 GND

10 GPIO0 31 GND

11 RTC_GPIO0 32 ANT

12 RTC_EINT 33 GND

13 GND 34 VB AT

14 SIM_DET 35 V B AT

15 SIM _D ATA 36 GND

16 SIM_CLK 37 GND

17 SIM_RST 38 ADC

18 SIM_VDD 39 PWRKEY

21 GND 42 STAT U S

2.2 Pin Description

Table 4: IO parameters definition

Pin type Description

SIM7020_Hardware_Design_V1.02 11 2018-07-25

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PD

Pull down

Default status

Power supply

Power supply, voltage range:

2.1-3.6V.

Power output 1.8V for other

PSM mode.

8 、

2

、

3

Table 5: Pin description

Pin name Pin No.

VB AT 34 、3

VDD_EXT 40

VDD_3V3 9

19 、

GND

、27、 3

0 33 、

、37

System Control

PWRKEY 39

PI

PO

DI，PU

Description Comment

external circuits with Max 50mA current output, such as

If unused, keep it open.

level shift circuit. Not present in

Power output 3.3V for other external circuits with Max 50mA current output. Not present in PSM mode.

Ground

Voltage range

3.3V-3.5V( depend on VBAT). If unused, keep it open.

PWRKEY has been

System power on/off control input, active low. The efficient input level must be below 0.5V.

pulled up to VB AT via

40Kohm resistor

internally.

RESET 28 DI，PU

SIM interface

SI M _ D ATA 15 I/O， PU SIM Card data I/O

SIM_RST 17 DO SIM Reset

SIM_CLK 16 DO SIM clock

SIM_VDD 18 PO

SIM_DET

SIM7020_Hardware_Design_V1.02 12 2018-07-25

14 DI

System reset control input, active low.

Power output for SIM card, its output Voltage depends on SIM card type automatically. I

SIM card detecting input. (This function do not support yet in standard software.)

RESET has been pulled up to VB AT via 40Kohm resistor internally.

All lines of SIM

interface should be

protected against ESD.

If used, keep a 10kΩ

resistor pulling up to

the VDD_EXT

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Positive line of the differential, bi-directional USB signal.

UA RT 1_RTS

3

DI，PU

Request to send

UART1_CTS

4

DOH

Clear to Send

UA RT 1_RI

7

DOH

Ring Indicator

UART2_TXD

22

DOH

Transmit Data

UART2_RXD

23

DI

P

Receive Data

In PSM, RTC_GPIO0 will

RTC_EINT receive interrupt event.

RTC_EINT can be the wake up

GPIO

LED control output as network status indication.

Operating status output.

Low level: Power off

Do not pull down before power on

Analog-digital converter input. Voltage range: 0.1-1.4V.

If unused, keep them open.

USB

USB_VBUS 24 DI,PD

Valid USB detection input with

2.5~5.25V detection voltage

USB_DP 25 I/O

USB_DN 26 I/O

Negative line of the differential, bi-directional USB signal.

UART interface

UART1_TXD 1 DOH Transmit Data

UART1_RXD 2 DI， PU Receive Data

UART1_DCD 5 DOH Data carrier detect

UART1_DTR 6 DI， PU Transmit Data

，

Indicate and Control in PSM Mode

USB interface for

debugging

If unused, keep them

open.

RTC_GPIO0 11 DO

RTC_EINT 12 DI 、P

change state from low to high if

source for exiting PSM.

NETLIGHT 41 DO

S TAT U S 42 DO

High level: Power on and firmware ready

GPIO0 10 IO

GPIO1 29 IO

RF interface

ANT 32 AI antenna

Other interface

ADC 38 AI

Voltage Domain:

VB AT

If unused, keep them open.

NC 20

SIM7020_Hardware_Design_V1.02 13 2018-07-25

No connection.

Keep it open

2.3 Mechanical Information

The following figure shows the package outline drawing of SIM7020.

Figure 3: Dimensions (Unit: mm)

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2.4 Footprint Recommendation

Figure 4: Footprint recommendation (Unit: mm)

SIM7020_Hardware_Design_V1.02 15 2018-07-25

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Symbol

Description

Min.

Typ .

Max.

Unit

VBAT(peak)

VBAT(average)

f)

3 Interface Application

3.1 Power Supply

The power supply for SIM7020 must be able to provide sufficient current up to more than 500mA

in order to satisfy the power supply current for maximum consumption.

Table 6: VBAT pins electronic characteristic

VB AT Module power voltage 2.1 3.3 3.6 V

I

Module power peak current in NB emission 500 - - mA

Module power average current in normal mode

Please refer to the table 32

I

VBAT(sleep)

I

VBAT(PSM)

I

VBAT(power-of

Power supply current in sleep mode

Power supply current in PSM mode - 3.4 - uA

Module power current in power off mode. - - 12 uA

3.2 Power Supply Design Guide

Make sure that the voltage on the VBAT pins will never drop below 2.1V, or module will be work

abnormally.

Note: If the power supply for VBAT pins can support up to500mA, using a total of more than

100uF capacitors is recommended, or else users must using a total of 300uF capacitors typically,

in order to avoid the voltage drop. The module power peak current depends on the total

capacitance. Using a total of 1000uF capacitors in the test that will reduce the peak current to

320mA.

The following figure shows the recommended circuit .These capacitors should be put as close as

possible to VBAT pads. Also, users should keep VBAT trace on circuit board wider than 1 mm to

minimize PCB trace impedance.

SIM7020_Hardware_Design_V1.02 16 2018-07-25

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VBAT

GND

Module

5.1V 500mW

VBAT

Cb

100uF

1uF

Ce Cc

100uF

Ca

Cd

100uF

100nF

GND

No.

Manufacturer

Part Number

Package

Figure 5: Power supply application circuit

In addition, for ESD protection, it is suggested to add a TVS diodenear the VBAT PINs.

Table 7: Recommended TVS diode list

1 Prisemi PESDHC2FD4V5B DFN1006

2 Prisemi PESDHC3D3V3U SOD323

3 WILLsemi ESD5651N-2/TR DFN1006

3.3 Voltage Monitor

To monitor the VB AT voltage, the AT command “AT+CBC” can be used.

When the VBAT voltage is out of the range, the module will be power off when the overvoltage

power-off function is enabled. The AT command “AT+C B ATC H K=1” can be used to enable the

overvoltage power-off function and the under-voltage power-off function.

Note: Under-voltage warning function and under-voltage power-off function are disabled by

default. For more information about these AT commands, please refer to Document [1].

3.4 Power on/Power off/Reset Function

3.4.1 Power on

SIM7020 can be powered on by pulling the PWRKEY pin to ground.

The PWRKEY pin has been pulled up with a resistance to V B AT internally, so it does not need to

be pulled up externally. It is strongly recommended to put a 100nF capacitor and an ESD protection

diode close to the PWRKEY pin, as it would strongly enhance the ESD performance of PWRKEY

pin. Please refer to the following figure for the recommended reference circuit.

SIM7020_Hardware_Design_V1.02 17 2018-07-25

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4.7K

47K

Turn on/

off

impulse

PWRKEY

Power

on

/

off

logic

VBAT

Module

1K

100nF

H L

40K

STATUS

(Output)

T

on

VBAT

PWRKEY

(Input)

T

on(status)

UART Port

不可用

可用

T

on(uart)

不可用

可用

USB Port

T

on(usb)

PWRKEY pin to power on module

STATUS pin output high level(indicating

power up ready )

Figure 6: Reference power on/off circuit

The power-on scenarios are illustrated in the following figure.

Table 8: Power on timing and electronic characteristic

Symbol Parameter Min. Typ. Max. Unit

Ton

The time of active low level impulse of

The time from power-on issue to

T

SIM7020_Hardware_Design_V1.02 18 2018-07-25

on(stat us)

The time from power-on issue to UART

on(uart)

on(usb)

port ready

The time from power-on issue to USB 4 s

Figure 7: Power on timing sequence

215 800 - ms

440

ms

2

s

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port ready

VIH

Input high level voltage on PWRKEY pin

0.7*VBAT

V

(

Output

)

T

off

( Input

)

T

off(status)

UART Port

UndefinedActive

T

off(uart)

T

on

T

off-on

USB Port

Undefined

Active

T

off(usb)

PWRKEY

STATUS

pulse on PWRKEY pin to power

off issue to STATUS pin output low

T

off(uart)

The time from power-off issue to UART port off

- - 1 s T

off(usb)

The time from power-off issue to USB port off

- - 1

s

off-on

VIL Input low level voltage on PWRKEY pin 0.3*VBAT V

3.4.2 Power off

The following methods can be used to power off SIM7020.

 Method 1: Power off SIM7020 by pulling the PWRKEY pin to ground.

 Method 2: Power off SIM7020 by AT command “AT + C PO W D=1”.

 Method 3: over-voltage or under-voltage automatic power off. The function can be enabled by

AT command “AT+CBATCHK=1”. Default is disabled.

Note: For details about “AT+CPOWD” and “AT+CBATCHK”, please refer to Document [1].

These procedures will make modules disconnect from the network and allow the software to enter a

safe state, and save data before module be powered off completely.

The power off scenario by pulling down the PWRKEY pin is illustrated in the following figure.

Table 9: Power off timing and electronic characteristic

Symbol Parameter

T

off

T

off(status)

T

The buffer time from power-off issue to power-on issue 5 - - s

SIM7020_Hardware_Design_V1.02 19 2018-07-25

The active low level time

off module

The time from power-

level(indicating power off )*

Figure 8: Power off timing sequence

Time value

Unit

Min. Typ . Max.

0.8 1 - s

- - 0.5 s

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*Note: The STATUS pin can be used to detect whether module is powered on or not. When module

has been powered on and firmware goes ready, STATUS will be high level, or else STATUS will

still low level.

3.4.3 Reset Function

SIM7020 can be reset by pulling the RESET pin to ground.

Note: This function is only used as an emergency reset. The RESET pin will be ineffectiveness in

the power off mode.

The RESET pin has been pulled up to 1.8V with a 40KΩ resistor internally. So it does not need to

be pulled up externally. It is strongly recommended to put a100nF capacitor and an ESD protection

diode close to the RESET pin. Please refer to the following figure for the recommended reference

circuit.

Figure 9: Reference reset circuit

Table 10: RESET pin electronic characteristic

Symbol Description Min. Typ. Max. Unit

T

reset

VIH Input high level voltage 0.7*VBAT

The active low level time impulse on

RESET pin to reset module

48 - - ms

V

VIL Input low level voltage 0.3*VBAT V

SIM7020_Hardware_Design_V1.02 20 2018-07-25

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TXD

RXD

RTS

CTS

UART _DTR

UART _ DCD

UART1_RI

TXD

RXD

RTS CTS

DTR

DCD

RING

MODULE (DCE)

CUSTOMER (DTE)

Serial portSerial port

MODULE

( DCE)

HOST

( DTE )

UARTUART

TXD

RXD

RTS CTS

DTR

DCD

RI

TXD

RXD

RTS

CTS DTR

DCD

RING

Interrupt

Wake up host

3.5 UART Interface

SIM7020 provides a 7-wire UART1 (universal asynchronous serial transmission) interface as DCE

(Data Communication Equipment). AT commands and data transmission can be performed through

UA RT 1 interface.UART2 can be used for debugging and download software.

3.5.1 UART Design Guide

The following figures show the reference design.

Figure 10: UART full modem

Figure 11: UART null modem

The SIM7020 UART is 1.8V voltage interface. If user’s UART application circuit is 3.3V voltage

interface, the level shifter circuits should be used for voltage matching. The TXB0108RGYR

provided by Texas Instruments is recommended. The following figure shows the voltage matching

reference design.

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TXD

RXD

RTS

CTS DTR

DCD

RI

A7

A1 A2

A3

A4

A5

A6

MODULE

TXB0108 RGYR

UART

A8

B7

B1 B2

B3

B4

B5

B6

B8

VCCA

OE

VDD_ EXT

100nF

3.3V

100nF

VCCB

GND

TXD_3.3 V

RXD_3.3 V

RTS_3.3V

CTS_3.3V

DTR_3.3 V

DCD_3.3 V

RI_3.3V

47K 47K

，RTS_ 3. 3V，

VDD_EXT

4.7K

47K

UART1_TXD

4.7K

GSM

VDD_EXT

RXD

VDD

DTE

VDD_EXT

4.7K

47K

4.7K

DTE

UART1_RXD

GSM

VDD_EXT

TXD

VDD

Figure 12: Reference circuit of level shift

Note: When it uses the level shifter IC, the pullupresistance

DCD_3.3V should not be less than 47KΩ.

Also the following reference circuit is recommended:

Figure 13: TX level matching circuit

on TXD_3.3V

Note: The default band rate is 115200bps. The triode conversion circuit is not suitable for high

band rate more than 460800. When using UART2 for downloading software, the band rate is

921600bps, please pay attention to the device’s speed support.

SIM7020_Hardware_Design_V1.02 22 2018-07-25

Figure 14: RX level matching circuit

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Idle

HIGH

LOW

Receiving SMS and any URC

report coming

RI

120ms

USB_VBUS

USB_DM

USB_DP

GND

USB

VBUS

D-

D+

GND

D2D1

0Ω

USB_ID

D3

MODULE HOST

3.5.2 RI and DTR Behavior

The RI pin description:

The RI pin can be used to interrupt output signal to inform the host controller such as application

CPU. Before that, users must use AT command “AT+CFGRI=1” to enable this function.

Normally RI will keep high level until certain conditions such as receiving SMS, or a URC report

coming, then it will output a low level pulse 120ms, in the end, it will become high level.

Figure 15: RI behaviour （SMS and URC report）

Note: For more details of AT commands about UART, please refer to document [1].

The DTR pin description:

After setting the AT command “AT+CSCLK=1”, SIM7020 will enter sleep mode by pulling up the

DTR pin when module is in idle mode. In sleep mode, the UART is unavailable. When SIM7020

enters sleep mode, pulling down DTR can wake up module.\

After setting the AT command “AT+CSCLK=0”, SIM7020 will do nothing when the DTR pin is

pulling up.

3.6 USB Interface

The SIM7020 contains a USB interface compliant with the USB1.1 specification as a peripheral, but

the USB charging function is not supported.

Because of the high speed on USB bus, more attention should be paid to the influence of the junction

capacitance of the ESD component on USB data lines. Typically, the capacitance of the D1 and D2

should be less than 2p F.

Table 11 : Recommended TVS list

No. Manufacturer Part Number Description Package

SIM7020_Hardware_Design_V1.02 23 2018-07-25

Figure 16: USB reference circuit

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1

ON Semi

ESD9L5.0ST5G

TVS 5V 0.5PF 150mW RO

SOD-923

2

TOSHIBA

DF2S6.8UFS

TVS 5V 2PF 150mW RO

SOD-923

3 ON Semi ESD9L5.0ST5G TVS 5V 0.5PF 150mW RO SOD-923

4 TOSHIBA DF2S6.8UFS TVS 5V 2PF 150mW RO SOD-923

3.7 SIM Interface

SIM7020 supports both 1.8V and 3.0V SIM Cards.

Table 12: SIM electronic characteristic in 1.8V mode (SIM_VDD=1.8V)

Symbol Parameter

SIM_V DD

LDO power output voltage

VIH High-level input voltage

VIL Low-level input voltage

VOH High-level output voltage

VOL Low-level output voltage

Min. Typ. Max. Unit

1.75 1.8 1.95 V

0.65*SIM_VDD - SIM_VDD +0.3 V

-0.3 0 0.25*SIM_VDD V

SIM_VDD -0.45 - SIM_VDD V

0 0 0.45 V

Table 13: SIM electronic characteristic 3.0V mode (SIM_VDD=3V)

Symbol Parameter

SIM_V DD

LDO power output voltage

VIH High-level input voltage

VIL Low-level input voltage

VOH High-level output voltage

Min. Typ. Max. Unit

2.75 3 3.05 V

0.65*SIM_VDD - SIM_VDD +0.3 V

-0.3 0 0.25*SIM_VDD V

SIM_VDD -0.45 - SIM_VDD V

VOL Low-level output voltage

3.7.1 SIM Application Guide

It is recommended to use an ESD protection component such as ESDA6V1W5 produced by ST

(www.st.com ) or SMF15C produced by ON SEMI (www.onsemi.com

peripheral circuit should be close to the SIM card socket. The following figure shows the 6-pin

SIM card holder reference circuit.

SIM7020_Hardware_Design_V1.02 24 2018-07-25

0 0 0.45 V

). Note that the SIM

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MODULE

TVS

SIM

_ VDD

SIM

_ CLK

SIM

_ DATA

SIM_ RST

VCC GND

RST VPP

CLK I

/

O

22

Ω

100

nF

C 707 10M 006 512

SIM Socket

22

Ω

22

Ω

22pF

22

pF

22pF

SIM_DET

Figure 17: SIM interface reference circuit

Note: SIM_DATA has been pulled up with a 10KΩ resistor to SIM_VDD in module. A 100nF

capacitor on SIM_VDD is used to reduce interference. For more details of AT commands about

SIM, please refer to document [1].SIM_CLK is very important signal, the rise time and fall time of

SIM_CLK should be less than 40ns, otherwise the SIM card might not be initialized correctly. If

SIM_DET is used, a 10KΩ resistor is necessary to pulling up to the power VDD_EXT.

3.7.2 Recommended SIM Card Holder

It is recommended to use the 6-pin SIM socket such as C707 10M006 512 produced by Amphenol.

User can visit http://www.amphenol.com

for more information about the holder.

SIM7020_Hardware_Design_V1.02 25 2018-07-25

Figure 18: Amphenol SIM card socket

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Signal

Description

C1

SIM_VDD

SIM Card Power supply.

C2

SIM_RST

SIM Card Reset.

C3

SIM_CLK

SIM Card Clock.

C5

GND

Connect to GND.

C6

VPP

C7

SI M _ D ATA

SIM Card data I/O.

Module

NETLIGHT

VBAT

4.7K

47K

R

NETLIGHT pin status

Module status

64ms ON, 800ms OFF

No registered network

64ms ON, 3000ms OFF

Registered network

64ms ON, 300ms OFF

Data transmit

Table 14: Amphenol SIM socket pin description

3.8 Network status

The NETLIGHT pin is used to control Network Status LED, its reference circuit is shown in the

following figure.

Figure 19: NETLIGHT reference circuit

Note: The value of the resistor named “R” depends on the LED characteristic.

Table 15: NETLIGHT pin status

OFF

Power off or PSM mode

Note: NETLIGHT output low level as “OFF”, and high level as “ON”.

3.9 ADC

SIM7020 has a dedicated ADC pin. It is available for digitizing analog signals such as battery

voltage and so on. The electronic specifications are shown in the following table.

SIM7020_Hardware_Design_V1.02 26 2018-07-25

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Characteristics

Resolution

–

10

–

Bits

Input Range

V

VDD_EXT ( Output)

64msVBAT

PWRKEY

(

Input)

VDD_3V3

( Output)

70msVBAT

PWRKEY

( Input)

VDD_EXT

V

VDD_EXT

Output voltage

1.7

1.8

1.9

V

VDD_3V3

Table 16: ADC electronic characteristics

Min. Typ . Max. Unit

0.1 – 1.4

Note: “AT+CADC” can be used to read the voltage of the ADC pin, for more details, please refer to

document [1].

3.10 Power Supply Output

SIM7020 has a LDO power output named VDD_EXT. The output voltage is 1.8V. Meanwhile it has a DCDC power output named VDD_3V3, which voltage range is 3.3V-3.5V (depend on VBAT).

Both of them are not present in PSM mode.

Figure 20：Power on sequence of the VDD_EXT

Figure 21：Power on sequence of the VDD_3V3

Table 17: Electronic characteristic

Pin name Description Min. Typ. Max. Unit

IO Output current - - 50 mA

V

VDD_3V3

IO Output current - - 50 mA

SIM7020_Hardware_Design_V1.02 27 2018-07-25

Output voltage 3.2 3.3 V B AT-0.1 V

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SIM7020_Hardware_Design_V1.02 28 2018-07-25

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Frequency

Power

Min.

LT E -FDD B1

23dBm +/-2.7dB

<-40dBm

LT E -FDD B2

23dBm +/-2.7dB

<-40dBm

LT E -FDD B3

23dBm +/-2.7dB

<-40dBm

LT E -FDD B4

23dBm +/-2.7dB

<-40dBm

LT E -FDD B5

23dBm +/-2.7dB

<-40dBm

LT E -FDD B6

23dBm +/-2.7dB

<-40dBm

LT E -FDD B8

23dBm +/-2.7dB

<-40dBm

LT E -FDD B12

23dBm +/-2.7dB

<-40dBm

LT E -FDD B13

23dBm +/-2.7dB

<-40dBm

LT E -FDD B18

23dBm +/-2.7dB

<-40dBm

LT E -FDD B19

23dBm +/-2.7dB

<-40dBm

LT E -FDD B20

23dBm +/-2.7dB

<-40dBm

LT E -FDD B26

23dBm +/-2.7dB

<-40dBm

LT E -FDD B28

23dBm +/-2.7dB

<-40dBm

LT E -FDD B39

23dBm +/-2.7dB

<-40dBm

Modulation

QPSK

MPR

≤ 0.5 dB

0 dB

≤ 0.5 dB

MPR

≤ 1 dB

MPR

≤ 2 dB

1

1920 ~1980 MHz

2110 ~2170 MHz

HD-FDD

4 RF Specifications

4.1 LTE RF Specifications

Table 18: Conducted transmission power

*Note：The max power is tested result single-tone in CAT-NB1. Multi-tone test results please

refer to part 6.2.3F.3 fo r CAT-NB1.

Table 19: Maximum Power Reduction (MPR) for UE category NB1 Power Class 3

Tone positions for 3

Tones allocation

Tone positions for 6

Tones allocation

Tone positions for 12

Tones allocation

0-2 3-5 and 6-8 9-11

0-5 and 6-11

0-11

Table 20: E-UTRA operating bands

E-UTRA UL Freq. DL Freq. Duplex Mode

SIM7020_Hardware_Design_V1.02 29 2018-07-25

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3

1710 ~1785 MHz

1805 ~1880 MHz

HD-FDD

5

824 ~849 MHz

869 ~894 MHz

HD-FDD

18

815 ~830 MHz

860 ~875 MHz

HD-FDD

20

832 ~862 MHz

791 ~821 MHz

HD-FDD

1710MHz-2170MHz

<0.9dB

6 830 ~840 MHz 875 ~885 MHz HD-FDD

8 880 ~915 MHz 925 ~960 MHz HD-FDD

12 699 ~716 MHz 729 ~746 MHz HD-FDD

13 777 ~787 MHz 746 ~756 MHz HD-FDD

19 830 ~845 MHz 875 ~890 MHz HD-FDD

26 814 ~849 MHz 859 ~894 MHz HD-FDD

28 703 ~748 MHz 758 ~803 MHz HD-FDD

Table 21: C AT-NB1 Reference sensitivity (QPSK)

Sensitivity dBm (95% throughput with

Operating band

repetitions )

1, 3,5, 8, 20, 28 -131

4.2 LTE Antenna Design Guide

Users should connect antennas to SIM7000’s antenna pads through micro-strip line or other types of

RF trace and the trace impedance must be controlled in 50Ω.SIMCom recommends that the total

insertion loss between the antenna pads and antennas should meet the following requirements:

Table 22: Trace loss

Frequency Loss

700MHz-960MHz <0.5dB

2300MHz-2650MHz <1.2dB

To facilitate the antenna tuning and certification test, a RF connector and an antenna matching circuit

should be added. The following figure is the recommended circuit.

SIM7020_Hardware_Design_V1.02 30 2018-07-25

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0201

LXES03AAA1-154

Murata

0402

LXES15AAA1-153

Murata

Figure 22: Antenna matching circuit (MAIN_ANT)

In above figure, the components R1,C1,C2 and R2 are used for antenna matching, the values of

components can only be achieved after the antenna tuning and usually provided by antenna vendor.

By default, the R1, R2 are 0Ω resistors, and the C1, C2 are reserved for tuning. The component D1 is

a TVS for ESD protection, and it is optional for users according to application environment.

The RF test connector is used for the conducted RF performance test, and should be placed as close

as to the module’s MAIN_ANT pin. The traces impedance between SIM7000 and antenna must be

controlled in 50Ω.

Two TVS are recommended in the table below.

Table 23: Recommended TVS

Package Part Number Ven d er

4.3 RF traces note

4.3.1 RF traces layout

 Keep the RF trace from module ant pin to antenna as short as possible

 RF trace should be 50 Ω either on the top layer or in the inner layer

 RF trace should be avoided right angle and sharp angle.

 Put enough GND vias around RF traces.

 RF trace should be far away from other high speed signal lines.

SIM7020_Hardware_Design_V1.02 31 2018-07-25

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Figure 23: RF trace should be far away from other high speed signal lines

 Avoiding the paroling rout of other system antennas nearly.

 There should be some distance from The GND to the inner conductor of the SMA connector. It

is better to keep out all the layers from inner to the outer conductor.

Figure 24: The distance between GND to the inner conductor of SMA

 GND pads around the ANT pad should not be hot pad to keep the GND complete.

SIM7020_Hardware_Design_V1.02 32 2018-07-25

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4.3.2 LT E ANT and other system ANT decoupling

 Make sure the efficiency of LT E main ANT more than 40%

 Keep the decoupling of LTE main ANT to WLAN ANT more than 15dB

 Keep the decoupling of LTE main ANT to GNSS ANT more than 30dB

Note: The decoupling value can be provided by ANT adventure. More details can refer to the

document[25].

SIM7020_Hardware_Design_V1.02 33 2018-07-25

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Parameter

Min.

Typ .

Max.

Unit

Voltage at VBAT

-0.5 - 4.5 V Voltage at USB_VBUS

-0.5 - 5.85

V

Voltage at digital pins (GPIO, UART etc)

-0.3 - 2.1

V

Voltage at digital pins (SIM)

-0.3 - 3.05

V

Voltage at PWRKEY/RESET/RTC_EINT/RTC_GPIO0

Parameter

Min.

Typ .

Max.

Unit

Voltage at VBAT

2.1

3.3

3.6

V

Voltage at USB_VBUS

2.5

5.0

5.25

V

Parameter

Description

Min.

Typ.

Max.

Unit

up resistor)

Input high leakage current (no

5 Electrical Specifications

5.1 Absolute maximum ratings

Absolute maximum rating for digital and analog pins of SIM7020 are listed in the following table:

Table 24: Absolute maximum ratings

-0.3 - 3.9

5.2 Operating conditions

Table 25: Recommended operating ratings

Table 26: 1.8V Digital I/O characteristics*

VIH High-level input voltage

VIL Low-level input voltage

VOH High-level output voltage

VOL Low-level output voltage

1.17 1.8 2.1 V

-0.3 0 0.63 V

1.35 - 1.8 V

0 - 0.45 V

IOH

IOL

IIH

IIL

SIM7020_Hardware_Design_V1.02 34 2018-07-25

High-level output current(no pull down resistor)

Low-level output current(no pull

pull down resistor)

Input low leakage current(no pull up resistor)

4 mA

5 uA

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Parameter

Min.

Typ .

Max.

Unit

Normal operation temperature

-30

25

80

Extended operation temperature*

-40

25

85

Storage temperature

-45

25

+90

Mode

Function

active. Module is registered to the network, and the module

module to a minimum functionality mode without removing the power

this mode is lower than

without removing the power supply. In this mode, the RF part of

*Note: These parameters are for digital interface pins, such as GPIOs (including NETLIGHT,

STATU S , SIM_DET), UART.

The operating temperature of SIM7020 is listed in the following table.

Table 27: Operating temperature

℃ ℃ ℃

*Note: The performance will be reduced slightly from the 3GPP specifications if the temperature

is outside the normal operating temperature range and still within the extreme operating

temperature range.

5.3 Operating Mode

5.3.1 Operating Mode Definition

The table below summarizes the various operating modes of SIM7020 product.

Table 28: Operating mode Definition

In this case, the current consumption of module will be reduced to the

LTE Sleep

minimal level and the module can still receive paging message and

SMS.

LTE Idle

Software is

is ready to communicate.

Module is ready for data transmission, but no data is currently sent or

LTE Standby

Normal operation

received. In this case, power consumption depends on network

settings.

There is data transmission in progress. In this case, power consumption

LTE Data

transmission

is related to network settings (e.g. power control level);

uplink/downlink data rates, etc.

AT command “AT+CFUN=0” AT+CSCLK=1 can be used to set the

Minimum functionality mode

supply. In this mode, the RF part of the module will not work and the

SIM card will not be accessible, but the serial port and USB port are

still accessible. The power consumption in

normal mode.

Flight mode

SIM7020_Hardware_Design_V1.02 35 2018-07-25

AT command “AT+CFUN=4” can be used to set the module to flight

mode

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sible. The power consumption in this mode is lower than normal

, all the output of the LDO and DCDC in the module will be

up the module.

the module will not work, but the serial port and USB port are still

acces

mode.

In this mode, the module will be the least current consumption.

Meanwhile

PSM mode

closed except the RTC power. And also all of the functions will be

unavailable except the RTC function. In PSM, RTC_GPIO0 will

change state from high to low. RTC_EINT or PWRKEY can wake

Module will go into power off mode by sending the AT command

Power off mode

“AT+ C P O WD ” or pull down the PWRKEY pin, normally. In this

mode the power management unit shuts down the power supply, and

software is not active. The serial port and USB are is not accessible.

5.3.2 Sleep mode

In sleep mode, the current consumption of module will be reduced to the minimal level, and module

can still receive paging message and SMS.

Several hardware and software conditions must be satisfied together in order to let SIM7020 enter

sleep mode:

1. UART condition

2. USB condition

3. Software condition

5.3.3 Minimum functionality mode and Flight mode

Minimum functionality mode ceases a majority function of the module, thus minimizing the power

consumption. This mode is set by the AT command which provides a choice of the functionality

levels.

● AT+CFUN=0: Minimum functionality

● AT+CFUN=1: Full functionality (Default)

● AT+CFUN=4: Flight mode

If SIM7020 has been set to minimum functionality mode, the RF function and SIM card function will

be closed. In this case, the serial port and USB are still accessible, but RF function and SIM card will

be unavailable.

If SIM7020 has been set to flight mode, the RF function will be closed. In this case, the serial port

and USB are still accessible, but RF function will be unavailable.

When SIM7020 is in minimum functionality or flight mode, it can return to full functionality by the

AT command “AT+CFUN=1”.

SIM7020_Hardware_Design_V1.02 36 2018-07-25

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IO

Vih(min).

Vih(max).

Vil(min).

Vil(max).

VB AT

1.575

2.725

IO

Voh(min).

Voh(max).

Vol(min).

Vol(max).

VB AT

RTC_GPIO0

1.785

- - 0.315

2.1(min)

RTC_GPIO0

3.085

- - 0.545

3.6(max)

Sleep/Idle Mode

Power Saving Mode

eDRX

5.3.4 Power Saving Mode (PSM)

SIM7030 module can enter into PSM for reducing its power consumption. The mode is similar to

power-off, but the module remains registered on the network and there is no need to re-attach or

re-establish the network connections. So in PSM all the functions will be unavailable except the RT C

function, module cannot immediately respond users’ requests.

In PSM, RTC_GPIO0 will change state from low to high if RTC_EINT receive interrupt event.

Either of the following methods will wake up the module from PSM:

 Pulling PWRKEY or RTC_EINT to low level will wake up the module.

 When the timer expires, the module will be automatically woken up.

Power domain of RTC_GPIO0 and RTC_EINT is VBAT, please consider the electrical

characteristics when connecting to external IO (suggest to use trigger as low-active).

Table 29: RTC_GPIO0/RTC_EINT characteristics

RTC_EINT

2.1 0 0.525 2.1(min)

3.6 0 0.905 3.6(max)

5.3.5 Extended Mode DRX (e-DRX)

In idle or sleep mode, module and the network may negotiate over non-access stratum signaling the

use of extended mode DRX for reducing power consumption.

5.4 Current Consumption

The current consumption is listed in the table below.

Table 30: Current consumption on VBAT Pins (VBAT=3.3V)

LTE supply current

(without USB connection)

PSM supply current

SIM7020_Hardware_Design_V1.02 37 2018-07-25

Sleep mode Typical: 236uA (at+cfun=0) Idle mode Typical: 5.6mA

PSM mode Typical: 3.4uA

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@PTW=10.24s, eDRX=20.48s, DRX=1.28s

Typical

@PTW=20.48s, eDRX=81.92s, DRX=2.56s

@PTW=40.96s, eDRX=655.36s, DRX=2.56s

LTE data

@23dbm Typical: 134mA

@0dbm Typical: 32mA

@23dbm Typical: 116mA

@0dbm Typical: 31 mA

@23dbm Typical: 116mA

@0dbm Typical: 25mA

@23dbm Typical: 128mA

@0dbm Typical: 25mA

@23dbm Typical: 113mA

@0dbm Typical: 26mA

@23dbm Typical: 126mA

@0dbm Typical: 27mA

Part

Contact discharge(kV)

Air discharge(kV)

GND （Shield）

+/-6

+/-12

GND （RF）

+/-6

+/-12

VB AT

+/-5

+/-10

Antenna port

+/-5

+/-10

Other PADs

+/-3

+/-6

Typical：230uA

@PTW=10.24s, eDRX=20.48s, DRX=2.56s

：130uA

eDRX mode supply current

（Tested in sl eep mode）

Typical：95uA

@PTW=20.48s, eDRX=162.84s, DRX=2.56s

Typical：77.5uA

Typical：69uA

LT E -FDD B1

LT E -FDD B3

LT E -FDD B5

LT E -FDD B8

LT E -FDD B20

LT E -FDD B28

@10dbm Typical: 42mA

@10dbm Typical: 44mA

@10dbm Typical: 35mA

@10dbm Typical: 34mA

@10dbm Typical: 38mA

5.5 ESD Notes

SIM7020 is sensitive to ESD in the process of storage, transporting, and assembling. When SIM7020

is mounted on the users’ mother board, the ESD components should be placed beside the connectors

which human body may touch, such as SIM card holder, audio jacks, switches, keys, etc. The

following table shows the SIM7020 ESD measurement performance without any external ESD

component.

Table 31: The ESD performance measurement table

Note: Temperature: 25℃, Humidity: 45%, tested on SIMCOM-EVB.

SIM7020_Hardware_Design_V1.02 38 2018-07-25

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6 SMT Production Guide

6.1 Top and Bottom View of SIM7020

Figure 25: Top and bottom view of SIM7020

6.2 Typical SMT Reflow Profile

SIMCom provides a typical soldering profile. Therefore the soldering profile shown below is only a

generic recommendation and should be adjusted to the specific application and manufacturing

constraints.

Figure 26: The ramp-soak-spike reflow profile of SIM7020

Note: For more details about secondary SMT, please refer to the document [21].

SIM7020_Hardware_Design_V1.02 39 2018-07-25

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Moisture Sensitivity Level

2a

4 weeks

3

168 hours

Mandatory bake before use. After bake, it must be reflowed within the

time limit specified on the label.

Baking temperature

Moisture

Time

40℃±5℃

6.3 Moisture Sensitivity Level (MSL)

SIM7020 is qualified to Moisture Sensitivity Level (MSL) 4 in accordance with JEDEC J-STD-033.

If the prescribed time limit is exceeded, users should bake modules for 192 hours in drying

equipment (<5% RH) at 40+5/-0°C, or 72 hours at 85+5/-5°C. Note that plastic tray is not

heat-resistant, and only can be baked at 45° C.

Table 32: Moisture Sensitivity Level and Floor Life

Floor Life (out of bag) at factory ambient≤30°C/60% RH or as

(MSL)

stated

1

Unlimited at ≦30℃/85% RH

2 1 year

4 72 hours

5 48 hours

5a 24 hours

6

NOTE: IPC / JEDEC J-STD-033 standard must be followed for production and storage.

6.4 Baking Requirements

SIM7020 modules are vacuum packaged, and guaranteed for 6 months storage without opening or leakage under the following conditions: the environment temperature is lower than 40℃, and the air

humidity is less than 90%.

If the condition meets one of the following ones shown below, the modules should be baked

sufficiently before re-flow soldering, and the baking condition is shown in table below; otherwise the

module will be at the risk of permanent damage during re-flow soldering.

 If the vacuum package is broken or leakage;

 If the vacuum package is opened after 6 months since it’s been packed;

 If the vacuum package is opened within 6 months but out of its Floor Life at factory

ambient≦30℃/60%RH or as stated.

Table 33: Baking requirements

<5% 192 hours

120℃±5℃

SIM7020_Hardware_Design_V1.02 40 2018-07-25

<5% 4 hours

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Note: Care should be taken if that plastic tray is not heat-resistant, the modules should be taken

out for preheating, and otherwise the tray may be damaged by high-temperature heating.

6.5 Stencil Foil Design Recommendation

The recommended thickness of stencil foil is 0.15mm.

Figure 27: Recommended SMT stencil footprint outline

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7 Packaging

SIM7020 module support tray packaging (default packaging).

Module tray drawing：

Figure 28: packaging diagram

Figure 29: Tray drawing

Table 34: Tray size

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Length （±3mm）

Width （±3mm）

（±

（

Length （±

Width （±

Height （

Module number

242.0 161.0 50

Small carton drawing：

Figure 30: Small carton drawing

Table 35: Small Carton size

Length

Width

270 180 120 50*20=1000

Big carton drawing ：

Height

Module number

Figure 31: Big carton drawing

Table 36: Big Carton size

Module number

380 280 280 1000*4=4000

SIM7020_Hardware_Design_V1.02 43 2018-07-25

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NO.

Title

Description

SIM7X00 Series_AT Command Manual_V1.xx

ITU-T Draft new recommendationV.25ter

Digital cellular telecommunications (Phase 2+); AT command set for GSM Mobile Equipment (ME)

[4]

GSM 07.10

Support GSM 07.10 multiplexing protocol

Digital cellular telecommunications (Phase 2+); Use of Data

Data Circuit terminating Equipment

Cell Broadcast Service (CBS)

Digital cellular telecommunications system (Phase 2+); Specification of the SIM Application Toolkit for the

interface

Digital cellular telecommunications system (Phase 2+);

Equipment (SIM – ME) interface

Digital cellular telecommunications system (Phase 2+); Alphabets and language-specific information

Digital cellular telecommunications system (Phase 2)

Conformance specification

Digital cellular telecommunications system (Release 5); Electromagnetic Compatibility (EMC) for mobile terminals

and ancillary equipment.

Technical Specification Group Radio Access Network; Terminal conformance specification; Radio transmission and reception (FDD)

User Equipment (UE) conformance specification; Part 3: Abstract Test Suites.

Electromagnetic compatibility and Radio spectrum Matters

3.2 of the R&TTE Directive

8 Appendix

8.1 Related Documents

Table 37: Related Documents

[1]

[2]

[3] GSM 07.07

[5] GSM 07.05

[6] GSM 11.14

[7] GSM 11.11

[8] GSM 03.38

[9] GSM 11.10

AT Command Manual

Serial asynchronous automatic dialing and control

Terminal Equipment – (DTE – DCE) interface for Short Message Service (SMS) and

Subscriber Identity Module – Mobile Equipment (SIM – ME)

Specification of the Subscriber Identity Module – Mobile

Mobile Station (MS) conformance specification

[10]

[11]

[12]

[13]

[14]

[15]

SIM7020_Hardware_Design_V1.02 44 2018-07-25

3GPP TS 51.010-1

3GPP TS 34.124

3GPP TS 34.121

3GPP TS 34.123-1

3GPP TS 34.123-3

EN 301 908-02 V2.2.1

Mobile Station (MS) conformance specification

Electromagnetic Compatibility (EMC) for mobile terminals

and ancillary equipment.

(ERM); Base Stations (BS) and User Equipment (UE) for IMT-2000. Third Generation cellular networks; Part 2: Harmonized EN for IMT-2000, CDMA Direct Spread (UTRA FDD) (UE) covering essential requirements of article

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Electromagnetic compatibility and Radio Spectrum Matters

radio equipment and services; Part 24: Specific conditions for

ect Spread (UTRA) for Mobile and

portable (UE) radio and ancillary equipment

Digital cellular telecommunications system (Release 5); Mobile Station (MS) conformance specification

[19]

GCF-CC V3.23.1

Global Certification Forum - Certification Criteria

Directive of the European Parliament and of the Council of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS)

[21]

Module secondary-SMT-UGD-V1.xx

Module secondary SMT Guidelines

[22]

SIM7X00

Note_V1.xx

This document describes how to use UART interface of

[24]

ETSI EN 301 908-13

IMT cellular networks; Harmonized EN covering the

Part 13

[25]

Antenna design guidelines for diversity receiver system

[26]

SIM7X00 Series_Sleep Mode_ Application Note_V1.xx

Sleep Mode Application Note

(ERM); Electromagnetic Compatibility (EMC) standard for

[16]

EN 301 489-24 V1.2.1

IMT-2000 CDMA Dir

[17]

[18]

[20]

[23]

IEC/EN60950-1(2001)

3GPP TS 51.010-1

2002/95/EC

Series_UART_Application

SIM7X00 Series_USB

AUDIO_Application

Note_V1.xx

(ETSI TS 136521-1 R13.4.0)

Safety of information technology equipment (2000)

SIMCom modules.

USB AUDIO Application Note

essential requirements of article 3.2 of the R&TTE Directive;

SIM7020_Hardware_Design_V1.02 45 2018-07-25

Smart Machine Smart Decision

Abbreviation

Description

ADC

Analog-to-Digital Converter

ARP

Antenna Reference Point

BER

Bit Error Rate

BD

BeiDou

BTS

Base Transceiver Station

CS

Coding Scheme

CSD

Circuit Switched Data

CTS

Clear to Send

DAC

Digital-to-Analog Converter

DRX

Discontinuous Reception

DSP

Digital Signal Processor

DTE

Data Terminal Equipment (typically computer, terminal, printer)

DTR

Data Terminal Ready

DTX

Discontinuous Transmission

EFR

Enhanced Full Rate

EGSM

Enhanced GSM

EMC

Electromagnetic Compatibility

ESD

Electrostatic Discharge

ETS

European Telecommunication Standard

EVDO

Evolution Data Only

FCC

Federal Communications Commission (U.S.)

FD

SIM fix dialing phonebook

FDMA

Frequency Division Multiple Access

FR

Full Rate

GMSK

Gaussian Minimum Shift Keying

GNSS

Global Navigation Satellite System

GPRS

General Packet Radio Service

GPS

Global Positioning System

GSM

Global Standard for Mobile Communications

HR

Half Rate

HSPA

High Speed Packet Access

I2C

Inter-Integrated Circuit

IMEI

International Mobile Equipment Identity

LT E

Long Term Evolution

MO

Mobile Originated

MS

Mobile Station (GSM engine), also referred to as TE

MT

Mobile Terminated

NMEA

National Marine Electronics Association

PAP

Password Authentication Protocol

PBCCH

Packet Switched Broadcast Control Channel

PCB

Printed Circuit Board

8.2 Terms and Abbreviations

Table 38: Terms and Abbreviations

SIM7020_Hardware_Design_V1.02 46 2018-07-25

Smart Machine Smart Decision

PCS

Personal Communication System, also referred to as GSM 1900

RF

Radio Frequency

RMS

Root Mean Square (value)

RTC

Real Time Clock

SIM

Subscriber Identification Module

SMS

Short Message Service

SMPS

Switched-mode power supply

TDMA

Time Division Multiple Access

TE

Terminal Equipment, also referred to as DTE

TX

Transmit Direction

UA RT

Universal Asynchronous Receiver & Transmitter

VSWR

Voltage Standing Wave Ratio

SM

SIM phonebook

NC

Not connect

EDGE

Enhanced data rates for GSM evolution

HSDPA

High Speed Downlink Packet Access

HSUPA

High Speed Uplink Packet Access

ZIF

Zero intermediate frequency

WCDMA

Wideband Code Division Multiple Access

VCTCXO

Voltage control temperature-compensated crystal oscillator

SIM

Universal subscriber identity module

UMTS

Universal mobile telecommunications system

UA RT

Universal asynchronous receiver transmitter

PSM

Power save mode

SIM7020_Hardware_Design_V1.02 47 2018-07-25

Smart Machine Smart Decision

Marks

Requirements

When in a hospital or other health care facility, observe the restrictions about the use of

mobiles. Switch the cellular terminal or mobile off, medical equipment may be

cellular terminal or mobile before boarding an aircraft. Make sure it is

switched off. The operation of wireless appliances in an aircraft is forbidden to prevent

interference with communication systems. Forgetting to think much of these

Do not operate the cellular terminal or mobile in the presence of flammable gases or

fumes. Switch off the cellular terminal when you are near petrol stations, fuel depots,

s or where blasting operations are in progress. Operation of any

electrical equipment in potentially explosive atmospheres can constitute a safety

hazard.

Your cellular terminal or mobile receives and transmits radio frequency energy while

RF interference can occur if it is used close to TV sets, radios, computers

or other electric equipment.

nds free operation.

GSM cellular terminals or mobiles operate over radio frequency signals and cellular

invalid SIM card. While you are in this condition and need emergent

emergency calls. In order to make or receive calls, the

Some networks do not allow for emergency call if certain network services or phone

features are in use (e.g. lock functions, fixed dialing etc.). You may have to deactivate

Also, some networks require that a valid SIM card be properly inserted in the cellular

terminal or mobile.

8.3 Safety Caution

Table 39: Safety Caution

sensitive and not operate normally due to RF energy interference.

Switch off the

instructions may impact the flight safety, or offend local legal action, or both.

chemical plant

switched on.

Road safety comes first! Do not use a hand-held cellular terminal or mobile when

driving a vehicle, unless it is securely mounted in a holder for ha

Before making a call with a hand-held terminal or mobile, park the vehicle.

networks and cannot be guaranteed to connect in all conditions, especially with a

mobile fee or an

help, please remember to use

cellular terminal or mobile must be switched on and in a service area with adequate

cellular signal strength.

those features before you can make an emergency call.

SIM7020_Hardware_Design_V1.02 48 2018-07-25

Smart Machine Smart Decision

Contact us:

Shanghai SIMCom Wireless Solutions Limited.

Address: Building B, No.633 Jinzhong Road, Changning District, Shanghai P.R.China 200335

Tel: +86 21 3157 5100\3157 5200

Email: simcom@simcom.com, simcom@sim.com

Website: www.simcomm2m.com

Technical Support

EMEA APAC America

West Europe

we-support@simcom.com

East Europe

ee-support@simcom.com

Middle East

me-support@simcom.com

Africa

af-support@simcom.com

ASEAN

asean-support@simcom.com

Australia and New Zealand

anz-support@simcom.com

Big China

China-support@simcom.com

North America

us-support@simcom.com

Central and South America

la-support@simcom.com

SIM7020_Hardware_Design_V1.02 49 2018-07-25

SimCom SIM7020C, SIM7020E, SIM7020 Series Hardware Design

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Table Index

Figure Index

1 Introduction

1.1 Product Outline

1.2 Hardware Interface Overview

1.3 Hardware Block Diagram

1.4 Functional Overview

2 Package Information

2.1 Pin Assignment Overview

2.2 Pin Description

2.3 Mechanical Information

2.4 Footprint Recommendation

3 Interface Application

3.1 Power Supply

3.2 Power Supply Design Guide

3.3 Voltage Monitor

3.4 Power on/Power off/Reset Function

3.4.1 Power on

3.4.2 Power off

3.4.3 Reset Function

3.5 UART Interface

3.5.1 UART Design Guide

3.5.2 RI and DTR Behavior

3.6 USB Interface

3.7 SIM Interface

3.7.1 SIM Application Guide

3.7.2 Recommended SIM Card Holder

3.8 Network status

3.9 ADC

3.10 Power Supply Output

4 RF Specifications

4.1 LTE RF Specifications

4.2 LTE Antenna Design Guide

4.3 RF traces note

4.3.1 RF traces layout

4.3.2 LT E ANT and other system ANT decoupling

5 Electrical Specifications

5.1 Absolute maximum ratings

5.2 Operating conditions

5.3 Operating Mode

5.3.1 Operating Mode Definition

5.3.2 Sleep mode

5.3.3 Minimum functionality mode and Flight mode

5.3.4 Power Saving Mode (PSM)

5.3.5 Extended Mode DRX (e-DRX)

5.4 Current Consumption

5.5 ESD Notes

6 SMT Production Guide

6.1 Top and Bottom View of SIM7020

6.2 Typical SMT Reflow Profile

6.3 Moisture Sensitivity Level (MSL)

6.4 Baking Requirements

6.5 Stencil Foil Design Recommendation

7 Packaging

8 Appendix

8.1 Related Documents

8.2 Terms and Abbreviations

8.3 Safety Caution