Simcom 201706 LTE-FDD MODULE User Manual UDV 201606 User Manual

Shanghai Simcom Ltd. LTE-FDD MODULE UDV 201606 User Manual

UDV-201706_User Manual

   SIM7500V_User Manual_V1.00
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 2Compliance Information: This device complies with part 15B FCC rules. Operation is subject to the following two conditions:     (1) this device may not cause harmful interference   (2) this device must accept any interference, including interference that may cause    undesired operation.” WARNING:Changes or modifications to this unit not expressly approved by the party responsible      for compliance could void the user's authority to operate the equipment.    FCC Caution:   (1)Exposure  to  Radio  Frequency  Radiation.  This  equipment  must  be  installed  and  operated  in accordance with provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating  in  conjunction  with  any  other  antenna  or  transmitter.  End-users  and  installers  must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance.   (2)Any changes or modifications not expressly approved by the grantee of this device could void the user's authority to operate the equipment.   (3)This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.   (4)Changes  or  modifications  to  this  unit  not  expressly  approved  by  the  party  responsible  for compliance could void the user authority to operate the equipment.   (5) the modules FCC ID is not visible when installed in the host, or (6) if the host is marketed so that end users do not have straight forward commonly used methods for access to remove the module so that the FCC ID of the module is visible; then an additional permanent label referring to the enclosed module: Contains Transmitter Module FCC ID: UDV-201706 or Contains FCC ID: UDV-201706.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 3 Document Title SIM7500V_User Manual Version V1.00 Date 2017-06-30 Status Released Document Control ID SIM7500V_User Manual_V1.00      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    Copyright © SIMCom Wireless Solutions Co., Ltd. 2017
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 4Contents Contents ............................................................................................................................................. 4Table Index ........................................................................................................................................ 6Figure Index ...................................................................................................................................... 7Revision History ................................................................................................................................ 81Introduction ................................................................................................................................ 91.1Product Outline ..................................................................................................................... 91.2Hardware Interface Overview ............................................................................................... 91.3Hardware Block Diagram...................................................................................................... 91.4Functional Overview ........................................................................................................... 102Package Information ............................................................................................................... 122.1Pin Assignment Overview ................................................................................................... 122.2Pin Description .................................................................................................................... 142.3Mechanical Information ...................................................................................................... 162.4Footprint Recommendation ................................................................................................. 173Interface Application ............................................................................................................... 183.1Power Supply ...................................................................................................................... 183.1.1Power supply Design Guide ......................................................................................... 183.1.2Recommended Power Supply Circuit .......................................................................... 193.1.3Voltage Monitor ............................................................................................................ 203.2Power on/Power off/Reset Function .................................................................................... 203.2.1Power on ....................................................................................................................... 203.2.2Power off ...................................................................................................................... 213.2.3Reset Function .............................................................................................................. 223.3UART Interface ................................................................................................................... 233.3.1UART Design Guide .................................................................................................... 233.3.2RI and DTR Behavior ................................................................................................... 253.4USB Interface ...................................................................................................................... 253.4.1USB Application Guide ................................................................................................ 263.5USIM Interface.................................................................................................................... 263.5.1USIM Application Guide .............................................................................................. 273.5.2SIM Card Design Guide ............................................................................................... 273.5.3Recommended USIM Card Holder .............................................................................. 283.6PCM Interface ..................................................................................................................... 293.6.1PCM Timing ................................................................................................................. 293.6.2PCM Application Guide ............................................................................................... 303.7I2C Interface ....................................................................................................................... 313.7.1I2C Design Guide ......................................................................................................... 313.8Network Status .................................................................................................................... 323.9Operating Status Indication ................................................................................................. 323.10Pin Multiplex Function .................................................................................................... 323.11Other interface ................................................................................................................. 33
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 53.11.1Sink Current Source .................................................................................................. 333.11.2ADC .......................................................................................................................... 3 4 4RF Specifications ...................................................................................................................... 354.1LTE RF Specifications ........................................................................................................ 3 5 4.2LTE Antenna Design Guide ................................................................................................ 354.3Dipole Antenna PCB Layout Requirements ........................................................................ 374.4Dipole Antenna Reference Design PCB .............................................................................. 375Electrical Specifications ........................................................................................................... 405.1Absolute Maximum Ratings................................................................................................ 405.2Operating Conditions .......................................................................................................... 405.3Operating Mode .................................................................................................................. 415.3.1Operating Mode Definition .......................................................................................... 415.3.2Sleep Mode ................................................................................................................... 4 2 5.3.3Minimum Functionality Mode and Flight Mode .......................................................... 425.4Current Consumption .......................................................................................................... 4 2 5.5ESD Notes ........................................................................................................................... 436SMT Production Guide ........................................................................................................... 446.1Top and Bottom View of Module ........................................................................................ 446.2Label Information ................................................................................................................ 446.3Typical SMT Reflow Profile ............................................................................................... 456.4Moisture Sensitivity Level (MSL) ...................................................................................... 456.5Stencil Foil Design Recommendation ................................................................................. 467Packaging .................................................................................................................................. 47Appendix .......................................................................................................................................... 49A. Reference Design ...................................................................................................................... 49B. Coding Schemes and Maximum Net Data Rates over Air Interface......................................... 50C. Related Documents ................................................................................................................... 52D. Terms and Abbreviations .......................................................................................................... 54E. Safety Caution ........................................................................................................................... 56
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 6Table Index Table 1: SIM7500 series frequency bands ........................................................................................................... 9Table 2: General features ................................................................................................................................... 10Table 3: Pin Definitions ..................................................................................................................................... 13Table 4: IO parameters definition....................................................................................................................... 14Table 5: Pin description...................................................................................................................................... 14Table 6: VBAT Pins electronic characteristic ..................................................................................................... 18Table 7: Recommended zener diode list ............................................................................................................. 19Table 8: Power on timing and electronic characteristic ...................................................................................... 21Table 9: Power off timing and Electronic Characteristic .................................................................................... 22Table 10: RESET pin electronic characteristic ................................................................................................... 23Table 11: USIM Electronic characteristic in 1.8V mode (USIM_VDD=1.8V) .................................................. 26Table 12: USIM Electronic characteristic 3.0V mode (USIM_VDD=2.95V) .................................................... 27Table 13: Amphenol USIM Socket Pin Description ........................................................................................... 28Table 14: PCM Format ....................................................................................................................................... 29Table 15: PCM Timing Parameters .................................................................................................................... 30Table 16: NETLIGHT pin status ........................................................................................................................ 32Table 17: Pin definition of the STATUS ............................................................................................................ 32Table 18: Pin multiplex function list .................................................................................................................. 33Table 19: Sink current electronic characteristic ................................................................................................. 33Table 20: ADC Electronic Characteristics .......................................................................................................... 34Table 21: Conducted transmission power .......................................................................................................... 35Table 22: Operating frequencies ........................................................................................................................ 35Table 23: Reference sensitivity (QPSK) ............................................................................................................ 35Table 24: Trace Loss .......................................................................................................................................... 35Table 25: Recommended TVS ........................................................................................................................... 37Table 26: Absolute maximum ratings ................................................................................................................. 40Table 27: Recommended operating ratings ........................................................................................................ 40Table 28: 1.8V Digital I/O characteristics* ........................................................................................................ 40Table 29: Operating temperature ........................................................................................................................ 41Table 30: Operating mode Definitions ............................................................................................................... 41Table 31: Current consumption on VBAT Pins (VBAT=3.8V) .......................................................................... 43Table 32: The ESD performance measurement table (Temperature: 25℃, Humidity: 45%) ............................. 43Table 35: The Description of Label Information ................................................................................................ 45Table 36: Moisture Sensitivity Level and Floor Life ......................................................................................... 46Table 37: Tray size ............................................................................................................................................. 47Table 38: Small Carton size ............................................................................................................................... 48Table 39: Big carton size .................................................................................................................................... 48Table 40: Coding schemes and maximum net data rates over air interface ........................................................ 50Table 41: Related documents ............................................................................................................................. 52Table 42: Terms and Abbreviations .................................................................................................................... 54Table 43: Safety caution ..................................................................................................................................... 56
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 7Figure Index Figure 1: SIM7500 series Block Diagram .......................................................................................................... 10Figure 2: Pin assignment overview .................................................................................................................... 12Figure 3: Dimensions (Unit: mm) ...................................................................................................................... 16Figure 4: Footprint recommendation (Unit: mm) ............................................................................................... 17Figure 5: Power supply application circuit......................................................................................................... 18Figure 6: Linear regulator reference circuit ....................................................................................................... 19Figure 7: Switching modepower supply reference circuit .................................................................................. 19Figure 8: ReferencePower on/offCircuit ............................................................................................................ 20Figure 9: Power on timing sequence .................................................................................................................. 21Figure 10: Power off timing sequence ............................................................................................................... 22Figure 11: Reference reset circuit ...................................................................................................................... 23Figure 12: UART full modem ............................................................................................................................ 24Figure 13: UART null Modem ........................................................................................................................... 24Figure 14: Reference circuit of level shift .......................................................................................................... 24Figure 15: RI behaviour(SMS and URC report) ........................................................................................... 25Figure 16: RI behaviour(voice call) .............................................................................................................. 25Figure 17: USB reference circuit ....................................................................................................................... 26Figure 18: USIM interface reference circuit ...................................................................................................... 27Figure 19: Amphenol SIM card socket .............................................................................................................. 28Figure 20: PCM_SYNC timing .......................................................................................................................... 29Figure 21: EXT codec to module timing ............................................................................................................ 29Figure 22: Module to EXT codec timing ........................................................................................................... 30Figure 23: Audio codec reference circuit ........................................................................................................... 31Figure 24: I2C reference circuit ......................................................................................................................... 31Figure 25: NETLIGHT reference circuit ............................................................................................................ 32Figure 26: ISINK reference circuit .................................................................................................................... 33Figure 27: Antenna matching circuit (MAIN_ANT) .......................................................................................... 36Figure 28: Antenna matching circuit (DIV_ANT) ............................................................................................. 36Figure 31: Top and bottom view of Module ....................................................................................................... 44Figure 32: Label Information ............................................................................................................................. 44Figure 33: The ramp-soak-spike Reflow Profile of Module............................................................................... 45Figure 34: Packaging introduce ......................................................................................................................... 47Figure 35: Module tray drawing introduce......................................................................................................... 47Figure 36: Small carton drawing introduce ........................................................................................................ 48Figure 37: Big carton drawing introduce ........................................................................................................... 48Figure 38: Reference design .............................................................................................................................. 49
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 8Revision History Data  Version  Description of change  Author 2017-06-30  V1.00  new  Shengwu.sun
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 91 Introduction This document describes the electronic specifications, RF specifications, interfaces, mechanical characteristics and testing results of the SIMCom SIM7500 series. With the help of this document and other software application notes/user guides, users can understand and use modules to design and develop applications quickly. 1.1 Product Outline The SIM7500V support many air-interface standards, refer to the following table. Table 1: SIM7500 series frequency bands Standard  Frequency  SIM7500V LTE  LTE-FDD B4   LTE-FDD B13   With a small physical dimension of 24*27*2.75 mm and with the functions integrated, the Module can  meet  almost  any  space  requirement  in  users’  applications,  such as smart phones, PDA’s, industrial handhelds, machine-to-machine, vehicle applications, etc. 1.2 Hardware Interface Overview The interfaces that are described in detail in the next chapters include: ●  Power Supply ●  USB Interface ●  UART Interface ●  USIM Interface ●  GPIO ●  ADC ●  Power Output ●  Current Sink Source ●  PCM Interface ●  I2C Interface 1.3 Hardware Block Diagram The block diagram of the Module is shown in the figure below.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 10GSM/WCDMA/LTERF FEMGSM/ WCDMA/LTE PARF TransceiverBasebandXO19.2MHzNANDFlashI2CPCMInterruptStatus LEDUSBUSIMPower OnResetUARTGPIOsADCLDOVBATSink Current SourceDDRMain AntennaPowerManagementQualcomm ChipSMT InterfaceWCDMA/LTERF FEMAUX AntennaSYSTEM POWERVBATGNSS RFGNSS Antenna Figure 1: SIM7500 series Block Diagram 1.4 Functional Overview Table 2: General features Feature  Implementation Power supply  Single supply voltage 3.4~4.2V Power saving  Current in sleep mode : <5mA Radio frequency bands  Please refer to the table 1 Transmitting power  LTE: Class 3 (0.25W)   Data Transmission Throughout LTE Category 1: 10 Mbps (DL)   LTE Category 1: 5 Mbps (UL) Antenna  LTE main antenna LTE auxiliary antenna SMS MT, MO, CB, Text and PDU mode SMS storage: USIM card or ME(default) Transmission of SMS alternatively over CS or PS. USIM interface  Support identity card: 1.8V/ 3V USIM application toolkit  Support SAT class 3, GSM 11.14 Release 98 Support USAT Phonebook management  Support phonebook types: DC,MC,RC,SM,ME,FD,ON,LD,EN Audio feature Support PCM interface Only support PCM master mode and short frame sync, 16-bit linear data formats
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 11UART interface A full modem serial port by default Baud rate: 300bps to 4Mbps(default:115200bps) Auto-bauding baud rate: 9600,19200,38400,57600,115200bps Can be used as the AT commands or data stream channel.   Support RTS/CTS hardware handshake   Multiplex ability according to GSM 07.10 Multiplexer Protocol. USB  USB 2.0 specification-compliant as a peripheral Firmware upgrade USB  Firmware upgrade over USB interface USB 2.0 specification-compliant as a peripheral Physical characteristics    Weight:4.0 g   Size:24*27*2.75mm Temperature range Normal operation temperature: -30°C to +80°C Extended operation temperature: -40°C to +85°C* Storage temperature -45°C to +90°C *Note: Module is able to make and receive voice calls, data calls, SMS and make WCDMA/HSPA+/LTE traffic in -40℃ ~ +85℃. 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.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 122 Package Information 2.1 Pin Assignment Overview All functions of the SIM7500 series will be provided through 56 pads that will be connected to the customers’  platform.  The  following  Figure  is  a  high-level  view  of the pin assignment of the SIM7500 series. DBG_TXDI2S_MCLKMAIN_ANTNETLIGHTSTATUS16GND28272625242322212019181756444546474849505152535455GNDPCM_CLKPCM_SYNCPCM_INPCM_OUTGNDL11_1V8RESETADCGPIO_1ISINKGNDGNDGNDGPIO_37GPIO_49GNDGNDGNSS_ANTGND Figure 2: Pin assignment overview
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 13Table 3: Pin Definitions Pin No.  Pin Name  Pin No. Pin Name 1  GND  2  DIV_ANT 3  GND  4  SCL 5  SDA  6  GND 7  USB_DM  8  USB_DP 9  VBUS  10  USIM_DATA 11  USIM_CLK  12  USIM_DET 13  USIM_RST  14  USIM_VDD 15  GND  16  GND 17  MCLK  18  PCM_CLK 19  PCM_SYNC  20  PCM_IN 21  PCM_OUT  22  GND 23  L11_1V8  24  RESET 25  ADC  26  GPIO_1 27  ISINK  28  GND 29  GND  30  PWRKEY 31  GND  32  GND 33  VBAT  34  VBAT 35  GND  36  RTS 37  DCD  38  TXD 39  RXD  40  DTR 41  CTS  42  RI 43  GND  44  GND 45  MAIN_ANT  46  GND 47  GND  48*  GPIO_37 49  GPIO_49  50  STATUS 51  DBG_TXD  52  NETLIGHT 53  GND  54  GND 55  GNSS_ANT  56  GND  *Note: SIM7500V could not support GNSS Function. Before the normal power up, pin48 cannot be pulled up.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 142.2 Pin Description Table 4: IO parameters definition Pin type  Description 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 PD  Pull down Table 5: Pin description Pin name  Pin No.  Default status  Description  Comment Power Supply VBAT  33,34  PI  Power supply, voltage range: 3.4~4.2V.   L11_1V8  23  PO 1.8V  output  with  Max.  50Ma current  output  for  external  circuit, such as level shift circuit. If unused, keep it open. GND 1, 3, 6, 15,16,22,28,29,31,32,35, 43,44,46,47,53,54,56  Ground   System Control PWRKEY 30  DI,PU  System power on/off control input, active low.    Default    0.8V RESET  24  DI, PU  System reset control input, active low. RESET has been pulled up to 1.8V via a resistor internally. USIM interface USIM_DATA  10  I/O,PU USIM Card data I/O, which has been pulled up via a 100KR resistor to USIM_VDD internally.   All lines of USIM interface should be protected against ESD. USIM_RST  13  DO  USIM Reset
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 15USIM_CLK  11  DO  USIM clock USIM_VDD  14  PO Power output for USIM card, its output Voltage depends on USIM card type automatically. Its output current is up to 50Ma. USB VBUS  9  DI,PD  Valid USB detection input with 3.6~5.85V detection voltage   USB_DM  7  I/O  Negative line of the differential, bi-directional USB signal.   USB_DP  8  I/O  Positiveline of the differential, bi-directional USB signal.   UART interface RTS  36  DOH  Request to send If unused, keep them open. CTS  41  DI,PU  Clear to Send RXD  39  DI,PU  Receive Data RI  42  DOH  Ring Indicator DCD  37  DOH  Carrier detects TXD  38  DOH  Transmit Data DTR  40  DI,PU  DTE get ready I2C interface SCL  4  DO  I2C clock output  If unused, keep them open.   SDA  5  I/O  I2C data input/output PCM interface PCM_OUT  21  DO  PCM data output.   If  unused,  please keep them open. PCM_IN  20  DI  PCM data input.   PCM_SYNC  19  DO  PCM data frame sync signal.   PCM_CLK  18  DO  PCM data bit clock.   MCLK  17  DO  Audio Master clock   GPIO NETLIGHT  52  DO  LED control output as network status indication. If  unused,  please keep them open. STATUS  50  DO Operating status output. High level: Power on and firmware ready Low level: Power off GPIO_1  26  IO  GPIO GPIO_49  49  IO  GPIO USIM_DET  12  IO Default: GPIO Optional: USIM card detecting input. H: USIM is removed L: USIM is inserted GPIO_37  48  IO  GPIO
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 16RF interface MAIN _ANT  45  AIO  MAIN antenna soldering pad   DIV_ANT  2  AI  Auxiliary antenna soldering pad   NC  55  AI     Other interface ISINK  27  AI  Ground-referenced current sink. If  unused,  please keep them open. DGB_TXD  51  DO  Use for debug ADC  25  AI  Analog-digital converter input    2.3 Mechanical Information The following figure shows the package outline drawing of Module.  Figure 3: Dimensions (Unit: mm)
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 17 2.4 Footprint Recommendation   Figure 4: Footprint recommendation (Unit: mm)
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 183 Interface Application 3.1 Power Supply On VBAT pads, a ripple current up to 2A typically, may cause voltage drop. Therefore, the power supply  for  these  pads  must  be  able  to  provide  sufficient current  up to  more  than  2A  in  order  to avoid the voltage drop of more than 300mV.   Table 6: VBAT Pins electronic characteristic Symbol  Description  Min. Typ.  Max.  UnitVBAT  Module power voltage  3.4  3.8  4.2  V IVBAT(peak) Module power peak current in normal mode.  1.0  -  2  A IVBAT(average) Module power average current in normal mode  Please refer to the table 34 IVBAT(sleep) Power supply current in sleep mode IVBAT(power-off) Module power current in power off mode.  -  -  20  uA  3.1.1 Power supply Design Guide Make sure that the voltage on the VBAT pins will never drop below 3.4V. Note: If the power supply for BAT pins can support up to 2A, using a total of more than 220uF capacitors is recommended, or else users must use a total of 1000uF capacitors, in order to avoid the voltage drop of more than 300mV. Some multi-layer ceramic chip (MLCC) capacitors (0.1/1uF) with low ESR in high frequency band can be used for EMC. These capacitors should be put as close as possible to VBAT pads. Also, user should keep VBAT trace on the circuit board wider than 2 mm to minimize PCB trace impedance. The following figure shows the recommended circuit.  Figure 5: Power supply application circuit
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 19In addition, in order to guard over voltage protection, it is suggested to use a zener diode with 5.1V reverse zener voltage and more than 500mW power dissipation.  Table 7: Recommended zener diode list No.  Manufacturer  Part Number power dissipation  Package 1  On semi  MMSZ5231BT1G  500mW  SOD123 2  Prisemi  PZ3D4V2H  500mW  SOD323 3  Vishay  MMSZ4689-V  500mW  SOD123 4  Crownpo  CDZ55C5V1SM  500mW  0805  3.1.2 Recommended Power Supply Circuit It is recommended that a switching modepower supply or linear regulator power supply is used. It is important to make sure that all the components used in the power supply circuit can resist a peak current up to 2A. The following figure shows the linear regulatorreference circuit with 5V input and 3.8V output.  Figure 6: Linear regulator reference circuit If there is a big voltage difference between input and output for VBAT power supply, orthe efficiency is extremely important,then a switching mode power supply will be preferable. The following figure shows theswitching mode power supply reference circuit.  Figure 7: Switching modepower supply reference circuit Note: The Switching Mode power supply solution for VBAT must be chosen carefully against Electro Magnetic Interference and ripple current from depraving RF performance.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 203.1.3 Voltage M o nitor  To monitor the VBAT voltage, the AT command “AT+CBC” can be used. For monitoring the VBAT voltage outside or within a special range, the AT command “AT+CVALARM” can be used to enable the under-voltage warning function. If  users  need to  power off Module,  when the  VBAT voltage  is out of a range, the AT command “AT+CPMVT” can be used to enable 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].  3.2 Power on/Power off/Reset Function 3.2.1 Power on Module can be powered on by pulling the PWRKEY pin down to ground. The PWRKEY pin has been pulled up to dVDDinternally, so you does not need to pull it up externally. It is strongly recommended to put a100nF capacitor and an ESD protection diode close to the PWRKEY pin. Please refer to the following figure for the recommended reference circuit.  47KPWRKEY PowerOn off logicDiodedVDDMODULE100Ω100nF4.7KTurn on /offimpulse  Figure 8: ReferencePower on/offCircuit The power-on scenarios are illustrated in the following figure.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 21STATUS(Output)TonVBATPWRKEY(Input)Ton(status)UART Port Undefined ActiveTon(uart)Undefined ActiveUSB  Port Ton(usb) Figure 9: Power on timing sequence  Table 8: Power on timing and electronic characteristic Symbol  Parameter  Min. Typ.  Max.  UnitTon The time of active low level impulse of PWRKEY pin to power on module  100  500  -  ms Ton(status) The time from power-on issue to STATUS pin output high level(indicating power up ready ) 22  -  -  s Ton(uart) The time from power-on issue to UART port ready  20   s Ton(usb) The time from power-on issue to USB port ready   20   s VIH Input high level voltage on PWRKEY pin  0.6  0.8  1.8  V VIL Input low level voltage on PWRKEY pin  -0.3 0  0.5  V  3.2.2 Power off The following methods can be used to power off Module.   ●  Method 1: Power off Module by pulling the PWRKEY pin down to ground. ●  Method 2: Power off Module by AT command“AT + CP OF”. ●  Method 3: Over-voltage or under-voltage automatic power off. The voltage range can be set by AT command“AT + CP M VT ”. ●  Method 4: Over-temperature or under-temperature automatic power off.  Note: If the temperature is outside the range of -30~+80℃, some warning will be reported via AT port. If the temperature is outside the range of -40~+85℃, Module will be powered off automatically.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 22For details about “AT+CPOF” and “AT+CPMVT”, 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 modules are powered off completely. The power off scenario by pulling down the PWRKEY pin is illustrated in the following figure.  (Output)Toff( Input )Toff(status)UART Port UndefinedActiveToff(uart)TonToff-onUSB Port UndefinedActiveToff(usb)PWRKEYSTATUS Figure 10: Power off timing sequence  Table 9: Power off timing and Electronic Characteristic Symbol  Parameter  Time value  UnitMin.  Typ.  Max.Toff The active low level time pulse on PWRKEY pin to power off module  2.5  --  -- s Toff(status) The time from power-off issue to STATUS pin output low level(indicating power off )*  22  -  -  s Toff(uart) The time from power-off issue to UART port off  15  -  -  s Toff(usb) The time from power-off issue to USB port off  15  -  -  s Toff-on The  buffer  time  from  power-off  issue  to  power-on issue  0  -  -  s  3.2.3 Reset Function Module can be reset by pulling the RESET pin down to ground. Note: This function is only used as an emergency reset when AT command “AT+CPOF” and the PWRKEY pin all have lost efficacy.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 23The RESET pin has been pulled up to 1.8V 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 11: Reference reset circuit  Table 10: RESET pin electronic characteristic Symbol  Description  Min.  Typ.  Max.  Unit Treset The active low level time impulse on RESET pin to reset module  100      ms VIH Input high level voltage  1.17  1.8  2.1  V VIL Input low level voltage  -0.3  0  0.8  V 3.3 UART Interface Module provides a 7-wire UART (universalasynchronous serial transmission) interface as DCE (Data Communication Equipment). AT commands and data transmission can be performed through UART interface. 3.3.1 UART Design Guide The following figures show the reference design.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 24 Figure 12: UART full modem  Figure 13: UART null Modem The Module UART is 1.8V voltage interface. If user’s UART application circuit is a 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.   Figure 14: Reference circuit of level shift To  comply  with  RS-232-C  protocol,  the  RS-232-C  level  shifter  chip  should  be  used  to  connect Module to the RS-232-C interface, for example SP3238ECA, etc. Note: Module supports the following baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600, 3200000, 3686400, 4000000bps. The default band rate is 115200bps.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 253.3.2 RI and DTR Behavior The RI pin can be used to interrupt output signal to inform the host controller such as application CPU.    Normally RI will stay at high level until certain conditions such as receiving SMS, or a URC report come  in.  It  will  then  change  to  low  level.  It  will  stay  low  until  the  host  controller  clears  the interrupted event with “AT+CRIRS” AT command.  Figure 15: RI behaviour(SMS and URC report)  Normally RI will be kept high until a voice call, then it will output periodic rectangular wave with 5900ms low level and 100ms high level. It will output this kind of periodic rectangular wave until the call is answered or hung up.    Figure 16: RI behaviour(voice call) Note: For more details of AT commands about UART, please refer to document [1] and [22]. DTR pin can be used to wake Module from sleep. When Module enters sleep mode, pulling down DTR can wake Module. 3.4 USB Interface The Module contains a USB interface compliant with the USB2.0 specification as a peripheral, but the USB charging function is not supported.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 263.4.1 USB Application Guide Module can be used as a USB device. Module supports the USB suspend and resume mechanism which can reduce power consumption. If there is no data transmission on the USB bus, Module will enter suspend mode automatically and will be resumed by some events such as voice call, receiving SMS, etc.   Figure 17: USB reference circuit Because of the high bit rate 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 should be less than1pF. It is recommended to use an ESD protection component such as ESD9L5.0ST5G provided by On Semiconductor (www.onsemi.com ).   D3 is suggested to select the diode with anti-ESD and voltage surge function, or customer could add a ZENER diode for surge clamping. The recommend diodes list please refer to table 7. L is recommended (MURATA) DLW21SN371SQ2L. Note:The USB_DM and USB_DP nets must be traced by 90Ohm+/-10% differential impedance.  3.5 USIM Interface   Module supports both 1.8V and 3.0V USIM Cards. Table 11: USIM Electronic characteristic in 1.8V mode (USIM_VDD=1.8V) Symbol  Parameter  Min.  Typ. Max.  Unit USIM_VDD  LDO power output voltage 1.75  1.8  1.95  V VIH High-level input voltage  0.65*USIM_VDD  -  USIM_VDD +0.3  V VIL Low-level input voltage  -0.3  0  0.35*USIM_VDD  V VOH High-level output voltage  USIM_VDD -0.45  -  USIM_VDD  V VOL Low-level output voltage  0  0  0.45  V
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 27 Table 12: USIM Electronic characteristic 3.0V mode (USIM_VDD=2.95V) Symbol  Parameter  Min.  Typ. Max.  Unit USIM_VDD  LDO power output voltage 2.75  2.95  3.05  V VIH High-level input voltage  0.65*USIM_VDD  -  USIM_VDD +0.3  V VIL Low-level input voltage  -0.3  0  0.25*USIM_VDD  V VOH High-level output voltage  USIM_VDD -0.45  -  USIM_VDD  V VOL Low-level output voltage  0  0  0.45  V 3.5.1 USIM 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 ). Note that the USIM peripheral circuit should be close to the USIM card socket.The following figure shows the 6-pin SIM card holder reference circuit.    Figure 18: USIM interface reference circuit  Note: USIM_DATA has been pulled up with a100KΩ resistor to USIM_VDD in module. A 100nF capacitor on USIM_VDD is used to reduceinterference. For more details of AT commands about USIM, please refer to document [1]. 3.5.2 SIM Card Design Guide SIM card signal could be interferenced by some high frequency signal, it is strongly recommended to follow these guidelines while designing:  SIM card holder should be far away from antenna  SIM traces should keep away from RF lines, VBAT and high-speed signal lines
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 28 The traces should be as short as possible  Keep SIM card holder’s GND connect to main ground directly  Shielding the SIM card signal by ground well    Recommended to place a 100nF capacitor on SIM_VDD line and keep close to the SIM card holder  Add some TVS which parasitic capacitance should not exceed 50pF  Add 51Ω resistor to (SIM_RST/SIM_CLK/SIM_DATA) signal could enhance ESD protection  Add 22pF capacitor to (SIM_RST/SIM_CLK/SIM_DATA) signal to induce RF signal interference   3.5.3 Recommended USIM Card Holder It is recommended to use the 6-pin USIM socket such as C707 10M006  512  produced  by Amphenol. User can visit http://www.amphenol.com for more information about the holder.  Figure 19: Amphenol SIM card socket Table 13: Amphenol USIM Socket Pin Description Pin  Signal  Description C1  USIM_VDD  USIM Card Power supply. C2  USIM_RST  USIM Card Reset. C3  USIM_CLK  USIM Card Clock. C5  GND  Connect to GND. C6  VPP   C7  USIM_DATA  USIM Card data I/O.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 293.6 PCM Interface Module provides a PCM interface for external codec, which can be used inmaster mode with short sync and 16 bits linear format. Table 14: PCM Format Note: For more details about PCM AT commands, please refer to document [1]. 3.6.1 PCM Timing Module supports 2.048 MHz PCM data and sync timing for 16 bits linear format codec.    Figure 20: PCM_SYNC timing  Figure 21: EXT codec to module timing Characteristics  Specification LineInterfaceFormat  Linear(Fixed) Datalength  16bits(Fixed) PCM Clock/Sync Source  Master Mode(Fixed) PCMClockRate  2048 KHz (Fixed) PCMSyncFormat  Shortsync(Fixed)   Data Ordering  MSB
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 30 Figure 22: Module to EXT codec timing Table 15: PCM Timing Parameters Parameter Description Min. Typ. Max. Unit T(sync)  PCM_SYNC cycle time  –  125  –  μs T(synch)  PCM_SYNC high level time  –   488   –  ns T(syncl)  PCM_SYNC low level time  –  124.5  –  μs T(clk)  PCM_CLK cycle time  –  488  –  ns T(clkh)  PCM_CLK high level time  –  244  –  ns T(clkl)  PCM_CLK low level time  –  244  –  ns T(susync)  PCM_SYNC setup time high before falling edge of PCM_CLK  –  122  –  ns T(hsync)  PCM_SYNC hold time after falling edge of PCM_CLK  –  366  –  ns T(sudin)  PCM_IN setup time before falling edge of PCM_CLK  60  –  –  ns T(hdin)  PCM_IN hold time after falling edge of PCM_CLK  60  –  –  ns T(pdout)  Delay from PCM_CLK rising to PCM_OUT valid  –  –  60  ns T(zdout)  Delay  from  PCM_CLK  falling  to  PCM_OUT HIGH-Z  –  –  60  ns  3.6.2 PCM Application Guide The following figure shows the external codec reference design.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 31 Figure 23: Audio codec reference circuit Note: Module can transmit PCM data by theUSB portbesidesthe PCM interface. For more details please refer to documents [1] and [23].  3.7 I2C Interface Module provides a I2C interface compatible with I2C specification, version 2.1, with clock rate up to 400 kbps. Its operation voltage is 1.8V. 3.7.1 I2C Design Guide The following figure shows the I2C bus reference design.  Figure 24: I2C reference circuit Note: SDA and SCLhave pull-up resistors in module. So, 2 external pull up resistors are not needed in application circuit.   “AT+CRIIC and AT+CWIIC” AT commands could be used to read/write register values of the I2C peripheral devices.For more details about AT commands please refer to document [1].
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 323.8 Network Status The NETLIGHT pin is used to control Network Status LED, its reference circuit is shown in the following figure.   Figure 25: NETLIGHT reference circuit Note: The value of the resistor named “R” depends on the LED characteristic. Table 16: NETLIGHT pin status NETLIGHT pin status    Module status Always On  Searching Network/Call Connect 200ms ON, 200ms OFF  Data Transmit 800ms ON, 800ms OFF  Registered network OFF  Power off / Sleep Note: NETLIGHT output low level as “OFF”, and high level as “ON”. 3.9 Operating Status Indication The pin50 is for operating status indication of the module. The pin output is high when module is powered on, and output is low when module is powered off.  Table 17: Pin definition of the STATUS Pin name  Pin number  Description STATUS  50  Operating status indication Note: For timing about STATUS, please reference to the chapter “3.2 power on/down scenarios” 3.10 Pin Multiplex Function Some pins of Module could be used for alternate function besides default function.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 33Table 18: Pin multiplex function list Note:For more details of AT commands about GPIO multiplex function,please refer to document [1]. 3.11 Other interface 3.11.1 Sink Current Source The ISINK pin is VBATtolerant and intended to drive some passive devices such as LCD backlight, white LED, etc. Its output current can be up to 40 mA and be set  by  the  AT  command  “AT+ CLEDITST”.  Table 19: Sink current electronic characteristic Symbol  Description  Min.  Typ.  Max.  Unit VISINK Voltage tolerant  0.5  -  VBAT    V IISINK Current tolerant  0  -  40  mA  ISINK is a ground-referenced current sink. The following figure shows its reference circuit.  Figure 26: ISINK reference circuit Pin Number Pin Name  Default Function  Alternate Function 4  SCL  SCL  GPIO11 5  SDA  SDA  GPIO10 12  USIM_DET  GPIO34  USIM_DET   18  PCM_CLK  PCM_CLK  GPIO23,SPI_CLK I2C_SCL 19  PCM_SYNC  PCM_SYNC  GPIO20,SPI_MOSI 20  PCM_IN  PCM_IN,  GPIO21,SPI_MISO 21  PCM_OUT  PCM_OUT  GPIO22,SPI_CS_N I2C_SDA
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 34Note: The sinking current can be adjusted to meet the design requirement through the AT command “AT+ CLEDITST =<0>, <value>”.The “value” ranges from 0 to 8, on behalf of the current from 0mA to 40mA by 5mA step.   3.11.2 ADC Module has 1 dedicated ADC pins named ADC. They are available fordigitizing analog signals such as battery voltage and so on. These electronic specifications are shown in the following table. Table 20: ADC Electronic Characteristics Characteristics  Min.  Typ.  Max.  Unit Resolution  –15  – Bits Input Range  0.1   1.7  V Input serial resistance  1  – – MΩ Note: “AT+CADC” can be used to read the voltage of the ADC pins, for more details, please refer to document [1].
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 354 RF Specifications 4.1 LTE RF Specifications Table 21: Conducted transmission power Frequency  Power  Min. LTE-FDD B4  23dBm +/-2.7dB  <-40dBm LTE-FDD B13  23dBm +/-2.7dB  <-40dBm  Table 22: Operating frequencies Frequency  Receiving  Transmission LTE-FDD B4  2110~2155 MHz  1710 ~1755 MHz LTE-FDD B13    777 ~787MHz  746~756 MHz  Table 23: Reference sensitivity (QPSK)  E-UTRA band 3GPP standard Test value  3GPP standard  Duplex 1.4 MHz  3MHz  5MHz 10MHz  10 MHz  15 MHz  20 MHz 4  -104.7  -101.7  -100  -97  -102  -95.2  -94  FDD 13      -97  -94  -95      FDD  4.2 LTE Antenna Design Guide Users should connect antennas to Module’s antenna pads through the micro-strip line or other types of RF trace. The trace impedance must be controlled in 50Ω. SIMCom recommends that the total insertion loss between Module and antenna should meet the following requirements: Table 24: Trace Loss Frequency  Loss 700MHz-960MHz  <0.5dB 1710MHz-2170MHz  <0.9dB 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. SIM7500V  provides  LTE  antenna  named  MAIN_ANT,  customer  could  use  50Ω  microstrip line or stripline antenna connect to the module.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 36The  maximum  gain  of  the  Main  antenna  gain  should  not  exceed  3.49dBi for LTE Band 4and 2.2dBi for LTE Band 13 considering  the  SAR radio. It  has according  to  reference traceand matching  circuit testing all  FCC items, and  all items  satisfy  FCC  requirements.  Only the  reference  trace  and  matching  circuit  is  certified,antenna  design  must  refer  to  it,  any other  deviations  require  testing  Class  II  applications  as required by FCC. The certified matching circuit as following:   Figure 27: Antenna matching circuit (MAIN_ANT)  In  above  figure,  the  components  R1,C1,C2  and  R2  are  used  for  antenna  matching,  the  value  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 Module and antenna must be controlled in 50Ω.   Figure 28: Antenna matching circuit (DIV_ANT) In above figure, R3, C3, C4 and R4 are used for auxiliary antenna matching. By default, the R3, R4 are 0Ωresistors, and the C3, C4 are reserved for tuning. D2 is a TVS for ESD protection, and it is
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 37optional for users according to application environment.   Two TVS are recommended in the table below. Table 25: Recommended TVS Package  Part Number  Vender 0201 LXES03AAA1-154 Murata 0402 LXES15AAA1-153 Murata  Note:SIMCom suggests the LTE auxiliary antenna to be kept on, since there are many high bands in the designing of FDD-LTE. Because of the high insert loss of the RF cable and layout lines, the receiver sensitivity of these bands above will have risk to meet the authentication without the diversity antenna.For more details about auxiliary antenna design notice,please refer to document [25]   4.3 Dipole Antenna PCB Layout Requirements  4.4 Dipole Antenna Reference Design PCB Mount these devices with brown mark facing up. Units: mm Line width should be designed to provide 50Ωimpedance matching characteristics.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 38   LAYER1 - TOP LAYER2 – BOTTOM
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 39
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 405 Electrical Specifications 5.1 Absolute Maximum Ratings Absolute maximumrating for digital and analog pins of Module are listed in the following table: Table 26: Absolute maximum ratings Parameter  Min.  Max.  Unit Voltage at VBAT  -0.5  6.0  V Voltage at VBUS  -0.5  6.3  V Voltage at digital pins (RESET,SPI,GPIO,I2C,UART,PCM)  -0.3  2.1  V Voltage at digital pins :USIM  -0.3  3.05  V Voltage at PWRKEY  -0.3  1.8   5.2 Operating Conditions Table 27: Recommended operating ratings Parameter  Min.  Typ.  Max.  Unit Voltage at VBAT  3.4  3.8  4.2  V Voltage at VBUS  3.6  5  5.25  V Table 28: 1.8V Digital I/O characteristics* Parameter  Description  Min.  Typ.  Max.  Unit VIH High-level input voltage  1.17  1.8  2.1  V VIL Low-level input voltage  -0.3  0  0.63  V VOH High-level output voltage  1.35  -  1.8  V VOL Low-level output voltage  0  -  0.45  V IOH High-level output current(no pull down resistor)  -  2   mA IOL Low-level output current(no pull up resistor)  -  -2  -  mA IIH Input high leakage current (no pull down resistor)  -  -  1  uA IIL Input low leakage current(no pull up resistor)  -1  -  -  uA *Note: These parameters are for digital interface pins, such as SPI, GPIOs (NETLIGHT), I2C, UART, PCM.    The operating temperature of Module is listed in the following table.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 41Table 29: Operating temperature Parameter  Min.  Typ.  Max.  Unit Normal operation temperature  -30  25  80  ℃ Extended operation temperature*  -40  25  85  ℃ Storage temperature  -45  25  +90  ℃ *Note: Module is able to make and receive voice calls, data calls, SMS and make WCDMA/HSPA+/LTE traffic in -40℃ ~ +85℃. 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 Module series products. Table 30: Operating mode Definitions Mode  Function Normal operation LTE Sleep In this case, the current consumption of module will be reduced to the minimal level and the module can still receive paging message and SMS. LTE Idle  Software is active. Module is registered to the network, and the module is ready to communicate. LTE Talk Connection between  two  subscribers is  in  progress.  In  this case,  the power consumption depends on network settings such as DTX off/on, FR/EFR/HR, hopping sequences, antenna. LTE Standby Module is ready for data transmission, but no data is currently sent or received. In this case, power consumption depends on network settings.   LTE transmission There is data transmission in progress. In this case, power consumption is related to network settings (e.g. power control level); uplink/downlink data rates, etc. Minimum functionality mode   AT  command  “AT+CFUN=0”  can  be  used  to  set  the  module  to  a minimum functionality mode without removing the power supply. In this  mode,  the  RF  part  of  the  module  will  not  work  and  the  USIM card will not be accessible, but the serial port and USB port are still accessible. The power consumption in this mode is lower than normal mode. Flight mode AT  command  “AT+CFUN=4”  or  pulling  down  the  FLIGHTMODE pin can be used to set the module to flight mode without removing the power supply. In this mode, the RF part of the module will not work but  the  serial  port  and  USB  port  are  still  accessible.  The  power
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 42consumption in this mode is lower than normal mode. Power off Module will go into power off mode by sending the AT command “AT+CPOF” or by pulling 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 Module enter into sleep mode:   1. UART condition   2. USB condition   3. Software condition Note: Before designing, pay attention to how to realize sleeping/waking function and refer to Document [26] for more details. 5.3.3 Minimum Functionality Mode and Flight Mode Minimum  functionality  mode  ceasesa  majority  functionof  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 Module has been set to minimum functionality mode, the RF function and USIM card function will be closed. In this case, the serial port and USB are still accessible, but RF function and USIM card will be unavailable.   If Module 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 Module is in minimum functionality or flight mode, it can return to full functionality by the AT command “AT+CFUN=1”. 5.4 Current Consumption The current consumption is listed in the table below.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 43Table 31: Current consumption on VBAT Pins (VBAT=3.8V) LTE Sleep/Idle mode LTE supply current   (without USB connection) Sleep mode Typical: 1.56 Idle mode Typical: 22 LTE Data LTE-FDD B4 @5 MHz      23.05dBm    Typical: 519mA @10 MHz    23.04dBm    Typical: 556mA @20 MHz    22.83dBm    Typical: 600mA LTE-FDD B13  @5 MHz      22.69dBm    Typical: 516mA @10 MHz  22.9dBm   Typical: 512mA 5.5 ESD Notes Module  is  sensitive  to  ESD  in  the  process  of  storage,  transporting  and  assembling.  Especially, Module is mounted on the users’ mother board, The ESD components should be placed beside the connectors which human body might touch, such as USIM card holder, audio jacks, switches and keys,  etc.  The  following  table  shows  the  Module  ESD  measurement  performance  without  any external ESD component. Table 32: The ESD performance measurement table (Temperature: 25℃, Humidity: 45%) Part  Contact discharge  Air discharge GND  +/-6K +/-12K VBAT  +/-5K  +/-10K Antenna port  +/-5K +/-10K USB  +/-4K +/-8K UART  +/-4K +/-8K PCM  +/-4K  +/-8K Other PADs  +/-3K +/-6K
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 446 SMT Production Guide 6.1 Top and Bottom View of Module  Figure 29: Top and bottom view of Module  6.2 Label Information  Figure 30: Label Information A D F H B G C E
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 45Table 33: The Description of Label Information No.  Description A  LOGO B  No.1 Pin C  Project Name D  Part Number E  Serial Number (SN) F  International Mobile Equipment Identity (IMEI) G  FCC ID H  QR code  6.3 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 31: The ramp-soak-spike Reflow Profile of Module Note: For more details about secondary SMT, please refer to the document [21]. 6.4 Moisture Sensitivity Level (MSL) Module is qualified to Moisture Sensitivity Level (MSL) 3 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.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 46Table 34: Moisture Sensitivity Level and Floor Life Moisture  Sensitivity  Level (MSL) Floor  Life  (out  of  bag)  at  factory  ambient≤30°C/60%  RH  or  as stated 1  Unlimited at  30℃/85% RH≦ 2  1 year 2a  4 weeks 3  168 hours 4  72 hours 5  48 hours 5a  24 hours 6  Mandatory bake before use. After bake, it must be reflowed within the time limit specified on the label. NOTE: IPC / JEDEC J-STD-033 standard must be followed for production and storage.  6.5 Stencil Foil Design Recommendation The recommended thickness of stencil foil is more than 0.1mm.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 477 Packaging Module module support tray packaging.  Figure 32: Packaging introduce Module tray drawing:  Figure 33: Module tray drawing introduce Table 35: Tray size Length(±3mm) Width(±3mm) Module number 242.0  161.0  15   Small carton drawing:
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 48 Figure 34: Small carton drawing introduce Table 36: Small Carton size Length(±10mm) Width(±10mm) Height(±10mm) Module number 270  180  120  15*20=300  Big carton drawing:  Figure 35: Big carton drawing introduce  Table 37: Big carton size Length(±10mm) Width(±10mm) Height(±10mm)Module number 380  280  280  300*4=1200
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 49Appendix A. Reference Design  Figure 36: Reference design  Note: The UART port suggest to be used by isolated circuit .
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 50B. Coding Schemes and Maximum Net Data Rates over Air Interface Table 38: Coding schemes and maximum net data rates over air interface Multislot definition(GPRS/EDGE) Slot class DL slot number  UL slot number Active slot number 1  1  1  2 2  2  1  3 3  2  2  3 4  3  1  4 5  2  2  4 6  3  2  4 7  3  3  4 8  4  1  5 9  3  2  5 10  4  2  5 11  4  3  5 12  4  4  5 GPRS coding scheme  Max data rata(4 slots) Modulation type CS 1 = 9.05 kb/s / time slot  36.2 kb/s  GMSK CS 2 = 13.4 kb/s / time slot  53.6 kb/s  GMSK CS 3 = 15.6 kb/s / time slot  62.4 kb/s  GMSK CS 4 = 21.4 kb/s / time slot  85.6 kb/s  GMSK EDGE coding scheme  Max data rata(4 slots) Modulation type MCS 1 = 8.8 kb/s/ time slot  35.2 kb/s  GMSK MCS 2 = 11.2 kb/s/ time slot  44.8 kb/s  GMSK MCS 3 = 14.8 kb/s/ time slot  59.2 kb/s  GMSK MCS 4 = 17.6 kb/s/ time slot  70.4 kb/s  GMSK MCS 5 = 22.4 kb/s/ time slot  89.6 kb/s  8PSK MCS 6 = 29.6 kb/s/ time slot  118.4 kb/s  8PSK MCS 7 = 44.8 kb/s/ time slot  179.2 kb/s  8PSK MCS 8 = 54.4 kb/s/ time slot  217.6 kb/s  8PSK MCS 9 = 59.2 kb/s/ time slot  236.8 kb/s  8PSK HSDPA device category  Max data rate(peak) Modulation type Category 1  1.2Mbps  16QAM,QPSK Category 2  1.2Mbps  16QAM,QPSK Category 3  1.8Mbps  16QAM,QPSK Category 4  1.8Mbps  16QAM,QPSK Category 5  3.6Mbps  16QAM,QPSK Category 6  3.6Mbps  16QAM,QPSK Category 7  7.2Mbps  16QAM,QPSK Category 8  7.2Mbps  16QAM,QPSK
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 51Category 9  10.2Mbps  16QAM,QPSK Category 10  14.4Mbps  16QAM,QPSK Category 11  0.9Mbps  QPSK Category 12  1.8Mbps  QPSK Category 13  17.6Mbps  64QAM Category 14  21.1Mbps  64QAM Category 15  23.4Mbps  16QAM Category 16  28Mbps  16QAM Category 17  23.4Mbps  64QAM Category 18  28Mbps  64QAM Category 19  35.5Mbps  64QAM Category 20  42Mbps  64QAM Category 21  23.4Mbps  16QAM Category 22  28Mbps  16QAM Category 23  35.5Mbps  64QAM Category 24  42.2Mbps  64QAM HSUPA device category  Max data rate(peak) Modulation type Category 1  0.96Mbps  QPSK Category 2  1.92Mbps  QPSK Category 3  1.92Mbps  QPSK Category 4  3.84Mbps  QPSK Category 5  3.84Mbps  QPSK Category 6  5.76Mbps  QPSK LTE-FDD device category (Downlink)  Max data rate(peak) Modulation type Category 1  10Mbps  QPSK/16QAM/64QAM Category 2  50Mbps  QPSK/16QAM/64QAM Category 3  100Mbps  QPSK/16QAM/64QAM Category 4  150Mbps  QPSK/16QAM/64QAM LTE-FDD device category (Uplink)  Max data rate(peak) Modulation type Category 1  5Mbps  QPSK/16QAM Category 2  25Mbps  QPSK/16QAM Category 3  50Mbps  QPSK/16QAM Category 4  50Mbps  QPSK/16QAM
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 52C. Related Documents Table 39: Related documents SN  Title  Description [1]  SIM7X00 Series_AT Command Manual_V1.xx  SIM7X00 Series_AT Command Manual [2]  ITU-T  Draft  new recommendationV.25ter  Serial asynchronous automatic dialing and control [3]  GSM 07.07  Digital cellular telecommunications (Phase 2+); AT command set for GSM Mobile Equipment (ME) [4]  GSM 07.10  Support GSM 07.10 multiplexing protocol   [5]  GSM 07.05 Digital cellular telecommunications (Phase 2+); Use of Data Terminal  Equipment  –  Data  Circuit  terminating  Equipment (DTE  –  DCE)  interface  for  Short  Message  Service  (SMS) and Cell Broadcast Service (CBS) [6]  GSM 11.14 Digital  cellular  telecommunications  system  (Phase  2+); Specification  of  the  SIM  Application  Toolkit  for  the Subscriber Identity Module – Mobile Equipment (SIM – ME) interface [7]  GSM 11.11 Digital  cellular  telecommunications  system  (Phase  2+); Specification  of  the  Subscriber  Identity  Module  –  Mobile Equipment (SIM – ME) interface [8]  GSM 03.38  Digital  cellular  telecommunications  system  (Phase  2+); Alphabets and language-specific information [9]  GSM 11.10 Digital  cellular  telecommunications  system  (Phase  2) ;Mobile  Station  (MS)  conformance  specification; Part 1: Conformance specification [10]  3GPP TS 51.010-1  Digital  cellular  telecommunications  system  (Release  5); Mobile Station (MS) conformance specification [11]  3GPP TS 34.124  Electromagnetic  Compatibility  (EMC)  for  mobile  terminals and ancillary equipment. [12]  3GPP TS 34.121  Electromagnetic  Compatibility  (EMC)  for  mobile  terminals and ancillary equipment. [13]  3GPP TS 34.123-1 Technical  Specification  Group  Radio  Access  Network; Terminal conformance specification; Radio transmission and reception (FDD) [14]  3GPP TS 34.123-3  User  Equipment  (UE)  conformance  specification;  Part  3: Abstract Test Suites. [15]  EN 301 908-02 V2.2.1 Electromagnetic compatibility and Radio spectrum Matters   (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 3.2 of the R&TTE Directive [16]  EN 301 489-24 V1.2.1 Electromagnetic  compatibility  and  Radio  Spectrum  Matters (ERM);  Electromagnetic  Compatibility  (EMC)  standard  for radio equipment and services; Part 24: Specific conditions for IMT-2000  CDMA  Direct  Spread  (UTRA)  for  Mobile  and portable (UE) radio and ancillary equipment [17]  IEC/EN60950-1(2001)  Safety of information technology equipment (2000) [18]  3GPP TS 51.010-1  Digital  cellular  telecommunications  system  (Release  5); Mobile Station (MS) conformance specification
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 53[19]  GCF-CC V3.23.1  Global Certification Forum - Certification Criteria [20]  2002/95/EC 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 Series_UART_Application Note_V1.xx   SIM7X00 Series_UART_Application Note  [23] SIM7X00 Series_USB AUDIO_Application Note_V1.xx SIM7X00 Series_USB AUDIO_Application Note  [24]  Antenna  design  guidelines  for diversity receiver system Antenna design guidelines for diversity receiver system [25]  SIM7X00 Series_Sleep Mode_ Application Note_V1.xx   SIM7X00 Series_Sleep Mode_ Application Note
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 54D. Terms and Abbreviations Table 40: Terms and Abbreviations Abbreviation  Description ADC  Analog-to-Digital Converter ARP  Antenna Reference Point BER  Bit Error Rate 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 GPRS  General Packet Radio Service GSM  Global Standard for Mobile Communications GNSS  Global Navigation Satellite System HR  Half Rate HSPA  High Speed Packet Access I2C  Inter-Integrated Circuit IMEI  International Mobile Equipment Identity LTE  Long Term Evolution MO  Mobile Originated MS  Mobile Station (GSM engine), also referred to as TE MT  Mobile Terminated PAP   Password Authentication Protocol PBCCH  Packet Switched Broadcast Control Channel PCB  Printed Circuit Board 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
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 55SMS  Short Message Service SPI  serial peripheral interface SMPS  Switched-mode power supply TDMA  Time Division Multiple Access TE  Terminal Equipment, also referred to as DTE TX  Transmit Direction UART  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 USIM  Universal subscriber identity module UMTS  Universal mobile telecommunications system UART  Universal asynchronous receiver transmitter
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 56E. Safety Caution Table 41: Safety caution 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 sensitive and not operate normally due to RF energy interference.  Switch off the 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. Forgeting to think much of these instructions may impact the flight safety or offend local legal action, or both.  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, chemical  plants  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 switched  on.  RF  interference  can  occur  if  it  is  used  close  to  TV  sets,  radios, computers or other electric equipment.  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 hands free operation. Before making a call with a hand-held terminal or mobile, park the vehicle.  GSM cellular terminals or mobiles operate over radio frequency signals and cellular networks  and  cannot  be  guaranteed  to  connect  in  all  conditions,  especially  with  a mobile fee or an invalid SIM card. While you are in this condition and need emergent help, please remember to use emergency calls. In order to make or receive calls, the cellular terminal or mobile must be switched on and in a service area with adequate cellular signal strength. 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 those features before you can make an emergency call. Also, some networks require that a valid SIM card be properly inserted in the cellular terminal or mobile.
Smart Machine Smart Decision   SIM7500A_User Manual_V1.00                                                      2017-06-30 57Contact us: Shanghai SIMCom Wireless Solutions Ltd. Add: SIM Technology Building, No.633, Jinzhong Road, Changning District, Shanghai P.R. China 200335 Tel:+86 21 3235 3300 Fax:+86 21 3235 3020 URL:www.simcomm2m.com

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