SimCom SIM800L Скачать руководство пользователя страница 6

Страница: 6 / 64

Smart Machine Smart Decision

SIM800L(MT6261)_Hardware Design_V1.01

2016-07-07

Table Index

TABLE 1: MODULE INFORMATION ........................................................................................................................... 11

TABLE 2: SIM800L KEY FEATURES ............................................................................................................................ 11

TABLE 3: CODING SCHEMES AND MAXIMUM NET DATA RATES OVER AIR INTERFACE ............................ 13

TABLE 4: OVERVIEW OF OPERATING MODES ........................................................................................................ 13

TABLE 5: PIN DESCRIPTION ....................................................................................................................................... 15

TABLE 6: RECOMMENDED ZENER DIODE .............................................................................................................. 20

TABLE 7: ELECTRONIC CHARACTERISTIC OF THE RESET PIN .......................................................................... 25

TABLE 8: THE CURRENT CONSUMPTION OF MINIMUM FUNCTIONALITY MODE(AT+CSCLK=1) ............. 26

TABLE 9: SERIAL PORT AND USB PIN DEFINITION ............................................................................................... 28

TABLE 10: SERIAL PORT CHARACTERISTICS ......................................................................................................... 28

TABLE 11: VBUS OPERATION VOLTAGE .................................................................................................................. 31

TABLE 12: RI BEHAVIOURS......................................................................................................................................... 32

TABLE 13: AUDIO INTERFACE DEFINITION ............................................................................................................ 33

TABLE 14: PERFORMANCE OF AUDIO AMPLIFIER ................................................................................................ 34

TABLE 15: MICROPHONE INPUT CHARACTERISTICS........................................................................................... 35

TABLE 16: AUDIO OUTPUT CHARACTERISTICS .................................................................................................... 35

TABLE 17: SIM PIN DEFINITION ................................................................................................................................. 36

TABLE 18: PIN DESCRIPTION (MOLEX SIM CARD HOLDER) .............................................................................. 38

TABLE 19: PIN DESCRIPTION (AMPHENOL SIM CARD HOLDER) ....................................................................... 39

TABLE 20: PCM PIN DEFINITION ............................................................................................................................... 39

TABLE 21: PCM SPECIFICATION ................................................................................................................................ 40

TABLE 22: PIN DEFINITION OF THE KEYPAD INTERFACE ................................................................................... 42

TABLE 23: PIN DEFINITION OF THE I2C ................................................................................................................... 43

TABLE 24: PIN DEFINITION OF THE GPIO ................................................................................................................ 43

TABLE 25: PIN DEFINITION OF THE ADC ................................................................................................................. 43

TABLE 26: ADC SPECIFICATION ................................................................................................................................ 44

TABLE 27: PIN DEFINITION OF THE PWM ............................................................................................................... 44

TABLE 28: BUZZER CHARACTERISTICS .................................................................................................................. 44

TABLE 29: PIN DEFINITION OF THE NETLIGHT ..................................................................................................... 45

TABLE 30: STATUS OF THE NETLIGHT PIN .............................................................................................................. 45

TABLE 31: PIN DEFINITION OF THE STATUS ........................................................................................................... 45

TABLE 32: PIN DEFINITION OF THE LED ................................................................................................................. 46

TABLE 33: ISINK SPECIFICATION .............................................................................................................................. 46

TABLE 34: DEFINITION OF THE RF_SYNC PIN........................................................................................................ 46

TABLE 35: RECOMMENDED TRANSIENT VOLTAGE SUPPRESSOR .................................................................... 48

TABLE 36: ABSOLUTE MAXIMUM RATINGS ........................................................................................................... 53

TABLE 37: RECOMMENDED OPERATING CONDITIONS ....................................................................................... 53

TABLE 38: DIGITAL INTERFACE CHARACTERISTICS ........................................................................................... 53

TABLE 39: SIM CARD INTERFACE CHARACTERISTICS ........................................................................................ 53

TABLE 40: SIM_VDD CHARACTERISTICS ................................................................................................................ 54

TABLE 41: VDD_EXT CHARACTERISTICS ............................................................................................................... 54

TABLE 42: VRTC CHARACTERISTICS ....................................................................................................................... 54

TABLE 43: CURRENT CONSUMPTION ...................................................................................................................... 54

TABLE 44: THE ESD CHARACTERISTICS (TEMPERATURE: 25

℃

, HUMIDITY: 45 %) ....................................... 55

TABLE 45: GSM850 AND EGSM900 CONDUCTED RF OUTPUT POWER .............................................................. 56

SIMCOM

CONFIDENTIAL

FILE

Содержание SIM800L

Страница 1: ...SIM800L MT6261 _Hardware Design_V1 01 S I M C O M C O N F I D E N T I A L F I L E ...

Страница 2: ...omer s possession Furthermore system validation of this product designed by SIMCom within a larger electronic system remains the responsibility of the customer or the customer s system integrator All specifications supplied herein are subject to change Copyright This document contains proprietary technical information which is the property of SIMCom Limited copying of this document and giving it t...

Страница 3: ...r Supply Pin 21 4 1 2 Monitoring Power Supply 22 4 2 Power on off Scenarios 22 4 2 1 Power on SIM800L 22 4 2 2 Power down SIM800L 23 4 2 3 Reset Function 24 4 3 Power Saving Mode 25 4 3 1 Minimum Functionality Mode 26 4 3 2 Sleep Mode 1 AT CSCLK 1 26 4 3 3 Wake Up SIM800L from Sleep Mode 1 26 4 3 4 Sleep Mode 2 AT CSCLK 2 26 4 3 5 Wake Up SIM800L from Sleep Mode 2 27 4 4 RTC Backup 27 4 5 Serial P...

Страница 4: ...a Interface 47 4 19 1 GSM Antenna Interface 47 4 19 2 FM Antenna Interface 48 5 PCB Layout 50 5 1 Pin Assignment 50 5 2 Principle of PCB Layout 50 5 2 1 Antenna Interface 51 5 2 2 Power Supply 51 5 2 3 SIM Card Interface 51 5 2 4 Audio Interface 51 5 2 5 Others 51 5 3 Recommended PCB Layout 51 6 Electrical Reliability and Radio Characteristics 53 6 1 Absolute Maximum Ratings 53 6 2 Recommended Ope...

Страница 5: ...ufacturing 58 7 1 Top and Bottom View of SIM800L 58 7 2 Typical Solder Reflow Profile 58 7 3 The Moisture Sensitivity Level 59 7 4 Baking Requirements 59 8 Appendix 60 I Related Documents 60 II Terms and Abbreviations 61 III Safety Caution 63 S I M C O M C O N F I D E N T I A L F I L E ...

Страница 6: ...DER 39 TABLE 20 PCM PIN DEFINITION 39 TABLE 21 PCM SPECIFICATION 40 TABLE 22 PIN DEFINITION OF THE KEYPAD INTERFACE 42 TABLE 23 PIN DEFINITION OF THE I2C 43 TABLE 24 PIN DEFINITION OF THE GPIO 43 TABLE 25 PIN DEFINITION OF THE ADC 43 TABLE 26 ADC SPECIFICATION 44 TABLE 27 PIN DEFINITION OF THE PWM 44 TABLE 28 BUZZER CHARACTERISTICS 44 TABLE 29 PIN DEFINITION OF THE NETLIGHT 45 TABLE 30 STATUS OF T...

Страница 7: ...RF OUTPUT POWER 56 TABLE 47 CONDUCTED RF RECEIVE SENSITIVITY 57 TABLE 48 OPERATING FREQUENCIES 57 TABLE 49 MOISTURE SENSITIVITY LEVEL AND FLOOR LIFE 59 TABLE 50 BAKING REQUIREMENTS 59 TABLE 51 RELATED DOCUMENTS 60 TABLE 52 TERMS AND ABBREVIATIONS 61 TABLE 53 SAFETY CAUTION 63 S I M C O M C O N F I D E N T I A L F I L E ...

Страница 8: ...L INTERFACES 29 FIGURE 21 RESISTOR MATCHING CIRCUIT 30 FIGURE 22 DIODE ISOLATION CIRCUIT 30 FIGURE 23 TX LEVEL MATCHING CIRCUIT 30 FIGURE 24 RX LEVEL MATCHING CIRCUIT 31 FIGURE 25 USB REFERENCE CIRCUIT 31 FIGURE 26 CONNECTION FOR SOFTWARE UPGRADING AND DEBUGGING 32 FIGURE 27 RI BEHAVIOUR OF VOICE CALLING AS A RECEIVER 33 FIGURE 28 RI BEHAVIOUR OF URC OR RECEIVE SMS 33 FIGURE 29 RI BEHAVIOUR AS A C...

Страница 9: ...FIGURE 48 FM ANTENNA MATCHING CIRCUIT 48 FIGURE 49 GND PIN OF THE EARPHONE USE TO BE THE FM ANTENNA INTERFACE 49 FIGURE 50 PIN ASSIGNMENT 50 FIGURE 51 RECOMMENDED PCB LAYOUT 52 FIGURE 52 TOP AND BOTTOM VIEW OF SIM800L 58 FIGURE 53 TYPICAL SOLDER REFLOW PROFILE OF LEAD FREE PROCESSES 58 S I M C O M C O N F I D E N T I A L F I L E ...

Страница 10: ... liu 2016 07 07 1 01 Add note of the over voltage or under voltage power down Add note of the over temperature or under temperature power down Add note of the ADC function Update Figure 47 Figure 48 Add Table 42 Delete the multiplexing function Update Figure 4 Delete 4 2 2 4 Over Temperature or Under Temperature Power Down Ajuan zhu S I M C O M C O N F I D E N T I A L F I L E ...

Страница 11: ...irements in customer applications such as smart phone PDA and other mobile devices SIM800L is a LGA package with 88 pads and provides all hardware interfaces between the module and customer s boards Support 5 5 2 keypads One full modem serial port customer can configure two serial ports One USB the USB interfaces can debug download software Audio channel which includes two microphone input a recei...

Страница 12: ...plementary Services Data USSD support SMS MT MO CB Text and PDU mode SMS storage SIM card SIM interface Support SIM card 1 8V 3V External antenna Antenna pad Audio features Speech codec modes Half Rate ETS 06 20 Full Rate ETS 06 10 Enhanced Full Rate ETS 06 50 06 60 06 80 Adaptive multi rate AMR Echo Cancellation Noise Suppression Serial port and debug port Serial port Default one Full modem seria...

Страница 13: ... case the power consumption depends on network settings such as DTX off on FR EFR HR hopping sequences antenna GPRS STANDBY Module is ready for GPRS data transfer but no data is currently sent or received In this case power consumption depends on network settings and GPRS configuration GPRS DATA There is GPRS data transfer PPP or TCP or UDP in progress In this case power consumption is related wit...

Страница 14: ...a functional diagram of SIM800L GSM baseband GSM RF Antenna interface Other interface Analog base band Digital base band Power management unit Radio Frequency Power Supply Analog Interface Digital Interface UART SIM GPIOs RTC Audio ADC RF FM USB KEY PCM Figure 1 SIM800L functional diagram S I M C O M C O N F I D E N T I A L F I L E ...

Страница 15: ...84 GND GND 87 GND 88 GND 83 GND GND 80 GND 81 GND 82 GND 1 2 3 4 5 6 7 8 9 10 NC FM_ ANTP USB_ DN GND GND GND GND GND GND GND GND 78 GND 79 GND 21 31 42 43 44 45 46 47 48 49 50 62 61 64 63 66 65 68 67 51 52 53 54 55 56 57 58 59 72 71 70 69 76 75 74 73 60 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 41 77 GND 22 30 23 24 25 26 27 28 29 PCM_ CLK GPIO3 KBC2 KBC4 KBR3 KBC1 PCM_ OUT GPIO2 F...

Страница 16: ...l audio input If these pins are unused keep open MIC1N 12 SPK1P 53 O Differential audio output SPK1N 13 MIC2P 9 I Differential audio input MIC2N 10 SPK2P 51 O Differential audio output SPK2N 11 PCM interface PCM_CLK 29 O PCM interface for digital audio If these pins are unused keep open PCM_OUT 30 O PCM_SYNC 65 O PCM_IN 66 I Keypads interface KBC4 24 I Support up to 50 buttons 5 5 2 If these pins ...

Страница 17: ...ation If these pins are unused keep open I2C SDA 75 I O Open drain output If these pins are unused keep open SCL 74 O Open drain output SIM card interface SIM_VDD 16 O Voltage supply for SIM card Support 1 8V or 3V SIM card All signals of SIM interface should be protected against ESD with a TVS diode array SIM_DATA 14 I O SIM data input output SIM_CLK 55 O SIM clock SIM_RST 15 O SIM reset SIM_DET ...

Страница 18: ...Smart Machine Smart Decision SIM800L MT6261 _Hardware Design_V1 01 18 2016 07 07 3 3 Package Dimensions Figure 3 Dimensions of SIM800L Unit mm S I M C O M C O N F I D E N T I A L F I L E ...

Страница 19: ...Smart Machine Smart Decision SIM800L MT6261 _Hardware Design_V1 01 19 2016 07 07 Figure 4 Recommended PCB footprint outline Unit mm S I M C O M C O N F I D E N T I A L F I L E ...

Страница 20: ...maging by the voltage surge These capacitors and Zener diode should be placed as close as possible to SIM800L VBAT pins VBAT 5 1V 500mW CA CB 33pF 10pF Figure 5 Reference circuit of the VBAT input Table 6 Recommended zener diode Vendor Part number Power watts Packages 1 On semi MMSZ5231BT1G 500mW SOD123 2 Prisemi PZ3D4V2H 500mW SOD323 3 Vishay MMSZ4689 V 500mW SOD123 4 Crownpo CDZ55C5V1SM 500mW 08...

Страница 21: ...ollowing figure shows the VBAT voltage drop at the maximum power transmit phase and the test condition is as following VBAT 4 0V A VBAT bypass capacitor CA 100µF tantalum capacitor ESR 0 7Ω Another VBAT bypass capacitor CB 1µF 577us 4 615ms Burst 2A IVBAT VBAT Max 350mV Figure 8 VBAT voltage drop during transmit burst 4 1 1 Power Supply Pin Pin 1 and Pin 42 are VBAT input Pins 2 43 44 45 are GND o...

Страница 22: ...M800L Customer can power on SIM800L by pulling down the PWRKEY pin for more than 1 second at least and release This pin is already pulled up to VBAT in the module internal so external pull up is not necessary Reference circuit is shown as below 4 7K 47K Turn on off impulse PWRKEY Power on down logic 100K VBAT Module 1K Figure 10 Powered on off module using transistor PWRKEY Power on down logic 100...

Страница 23: ... 4 2 2 Power down SIM800L SIM800L will be powered down in the following situations Normal power down procedure power down SIM800L by the PWRKEY pin Normal power down procedure power down SIM800L by AT command AT CPOWD 1 Abnormal power down over voltage or under voltage automatic power down 4 2 2 1 Power down SIM800L by the PWRKEY Pin Customer can power down SIM800L by pulling down the PWRKEY pin f...

Страница 24: ...RNNING If the voltage 3 4V the following URC will be reported and the module will be automatically powered down UNDER VOLTAGE POWER DOWN If the voltage 4 4V the following URC will be reported and the module will be automatically powered down OVER VOLTAGE POWER DOWN At this moment AT commands can not be executed any more and only the RTC is still active Power down mode can also be indicated by STAT...

Страница 25: ...n refer to the table below Table 7 Electronic characteristic of the RESET pin Pin name Symbol Min Typ Max Unit RESET VIH 1 5 1 8 2 0 V VIL 0 6 V Low power time 105 ms The reset scenarios are illustrated in the following figures T 105ms VDD_EXT RESET VIL 0 6V STATUS t 2 7S t 400us VDD_EXT 2 8V Figure 16 Reset timing sequence 4 3 Power Saving Mode SIM800L has two power saving modes Minimum functiona...

Страница 26: ...t the sleep mode AT CSCLK 1 by DTR signal When DTR is in high level and without interrupt on air and hardware such as GPIO interrupt or data in serial port SIM800L will enter sleep mode automatically In this mode SIM800L can still receive paging or SMS from network but the serial port is not accessible 4 3 3 Wake Up SIM800L from Sleep Mode 1 When SIM800L is in sleep mode 1 AT CSCLK 1 the following...

Страница 27: ...system Current output for backup battery when the VBAT power supply is in present and the backup battery is in low voltage state The RTC power supply of module can be provided by an external capacitor or a battery non chargeable or rechargeable through the VRTC The following figures show various reference circuits for RTC back up External capacitor backup RTC Core 2 2K Module VRTC Large capacitanc...

Страница 28: ...Unit VIL 0 3 0 7 V VIH 2 1 3 1 V VOL 0 4 V VOH 2 4 2 8 V 4 5 1 Function of Serial Port Serial port Full mode device Contains data lines TXD and RXD hardware flow control lines RTS and CTS status lines DTR DCD and RI Serial port can be used for CSD FAX GPRS service and AT communication It can also be used for multiplexing function For details about multiplexing function please refer to table 11 Ser...

Страница 29: ...no parity and 1 stop bit The URC such as RDY CFUN 1 and CPIN READY will not be reported Note Customer can use AT command AT IPR x to set a fixed baud rate and the setting will be saved to non volatile flash memory automatically After the configuration is set as fixed baud rate the URC such as RDY CFUN 1 and CPIN READY will be reported when SIM800L is powered on 4 5 2 Serial Interfaces The followin...

Страница 30: ... is 3V or3 3V the following reference circuits are recommended TXD RXD Module DTE TXD RXD VDD_EXT 10K 10K GND GND Figure 22 Diode isolation circuit Note please make sure the minimum of client high limit should be less than 2 8V minus the diode drop If the voltage of UART is 5V the following reference circuits are recommended VDD_EXT 4 7K 47K TXD 4 7K Module VDD_EXT RXD VDD DTE Figure 23 TX level m...

Страница 31: ...eve software debug function through USB interface When powering on the module connect VBUS USB_DP USB_DN and GND to PC then install the driver following the prompts a UART port could be recognized by PC customer could achieve the software Debug with this UART port SIMCom recommended the following connected diagram Module USB USB_DP USB _ DN USB _ DN GND GND 22R USB _ DP USB_VBUS VBUS 22 R 1uF Figu...

Страница 32: ... connect to GND while upgrading Refer to the following figure for debugging and upgrading software TXD Module DCE RXD GND PWRKEY TXD RXD GND Serial Port PWRKEY I O Connector Figure 26 Connection for software upgrading and debugging The UART interface supports the CMOS level If customer connects the module to the computer the level shifter should be added between the DCE and DTE 4 6 RI Behaviors Ta...

Страница 33: ...eceiver HIGH LOW Idle RI 120ms Receive SMS URC Figure 28 RI behaviour of URC or receive SMS However if the module is used as caller the RI will remain high Please refer to the following figure HIGH LOW Idle Ring Establish the call Hang up the call Idle RI Figure 29 RI behaviour as a caller 4 7 Audio Interfaces SIM800L provides two analog inputs MIC1P 1N MIC2P 2N which could be used for electret mi...

Страница 34: ...and AT CLVL is used to adjust the output gain level For more details please refer to document 1 In order to improve audio performance the following reference circuits are recommended The audio signals have to be layout according to differential signal layout rules as shown in following figures 4 7 1 Speaker Interfaces Configuration SPK1P 2P Close to speaker ESD ESD 10pF 33pF 33pF 33pF Module SPK1N...

Страница 35: ...tput characteristics Parameter Conditions Min Typ Max Unit Normal output RL 32 Ω receiver 90 mW RL 8 Ω speaker 1080 mW 4 7 4 TDD Audio signal could be interferenced by RF signal Coupling noise could be filtered by adding 33pF and 10pF capacitor to audio lines 33pF capacitor could eliminate noise from GSM850 EGSM900MHz while 10pF capacitor could eliminate noise from DCS1800 PCS1900MHz frequency Cus...

Страница 36: ...utput SIM_CLK 55 SIM clock SIM_RST 15 SIM reset SIM_DET 54 SIM card detection It is recommended to use an ESD protection component such as ST www st com ESDA6V1 5W6 or ON SEMI www onsemi com SMF05C That the SIM peripheral circuit should be close to the SIM card socket The reference circuit of the 8 pin SIM card holder is illustrated in the following figure Module PRESENCE 100nF MOLEX 91228 SIM Car...

Страница 37: ...SIM traces should keep away from RF lines VBAT and high speed signal lines 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 SI...

Страница 38: ...DD SIM card power supply C2 SIM_RST SIM card reset C3 SIM_CLK SIM card clock C4 GND Connect to GND C5 GND Connect to GND C6 VPP Not connect C7 SIM_DATA SIM card data I O C8 SIM_DET Detect SIM card presence For 6 pin SIM card holder SIMCom recommends to use Amphenol C707 10M006 512 Customer can visit http www amphenol com for more information about the holder S I M C O M C O N F I D E N T I A L F I...

Страница 39: ... SIM card power supply C2 SIM_RST SIM card reset C3 SIM_CLK SIM card clock C5 GND Connect to GND C6 VPP Not connect C7 SIM_DATA SIM card data I O Note Every time plug SIM card interval advice is greater than 2s Otherwise may not be able to correct detection 4 9 PCM Interface SIM800L provides a hardware PCM interface Table 20 PCM pin definition Pin name Pin number Description S I M C O M C O N F I ...

Страница 40: ...M reference circuit 4 10 Keypad Interface The keypad interface consists of 5 keypad column outputs and 5 keypad row inputs with total 5 5 2 which is 50 keys Module has two connections which supports 25 keys and anther supports 50 keys PCM_CLK 29 PCM clock PCM_OUT 30 PCM data output PCM_SYNC 65 PCM synchrony PCM_IN 66 PCM data input Parameter Specification Line Interface Format Linear Fixed Data le...

Страница 41: ...T command to define as GPIO for details please see the relevant manuals Module supports a new key connection can support 50 keys which meets full keyboard demand the connection diagram is as following KBR4 KBR0 KBC0 KBC4 20K Module 20K Figure 38 50 keys reference circuit Note Do not change the 20KΩ resistor in the diagram Customer could cascade a less than 1K resistor to enhance the ESD performanc...

Страница 42: ...ted Table 22 Pin definition of the keypad interface Pin name Pin number Function Default state KBC0 20 Keypad matrix column Pull up KBC1 25 Pull up KBC2 22 Pull up KBC3 21 Pull up KBC4 24 Pull up KBR0 62 Keypad matrix row Pull down KBR1 60 Pull down KBR2 61 Pull down KBR3 23 Pull down KBR4 63 Pull down Note Please be sure to increase the ESD protection devices in product design phase and make sure...

Страница 43: ... up to VDD_EXT 4 12 General Purpose Input Output GPIO SIM800L provides 3 GPIO pins The output voltage level of the GPIO can be set by AT command AT SGPIO The input voltage level of the GPIO can also be read by AT command AT SGPIO For more details please refer to document 1 Table 24 Pin definition of the GPIO Pin name Pin number Reset state GPIO1 3 I PD GPIO2 27 I PU GPIO3 28 I PU t 3 2s PWRKEY INP...

Страница 44: ...7 Pin definition of the PWM SIM800L provides a PWM which can be used to drive a vibrator and a backlight LED for display or keyboard PWM output frequency varies from 200Hz to 100KHz Two 7 bit unsigned binary parameters are used for the output period and for the duty cycle AT command AT SPWM is used to set the output period and duty cycle of the PWM For details please refer to document 1 A typical ...

Страница 45: ... Status SIM800L behavior Off SIM800L is not running 64ms On 800ms Off SIM800L not registered the network 64ms On 3000ms Off SIM800L registered to the network 64ms On 300ms Off GPRS communication is established Reference circuit is recommended in the following figure Module NETLIGHT VBAT 4 7K 47K R Figure 43 Reference circuit of NETLIGHT 4 16 Operating Status Indication The pin4 is for operating st...

Страница 46: ...VBAT VBAT R ISINK1 Figure 44 LED driver reference circuit Table 33 ISINK specification Pin name Min Typ Max Unit ISINK0 24 mA ISINK1 60 100 mA Note ISINK0 provide 6 current level steps of up to 24mA 4 18 RF Synchronization Signal The synchronization signal serves to indicate growing power consumption during the transmit burst The signal is generated by the RF_SYNC pin Table 34 Definition of the RF...

Страница 47: ...ed that the GSM antenna and the FM antenna should be placed as far as possible The isolations of the two antenna should be bigger than 30dB NOTE About the RF trace layout please refer to AN_SMT Module_RF_Reference Design_Guide 4 19 1 GSM Antenna Interface There is a GSM antenna pad named GSM_ANT for SIM800L the connection of the antenna must be decoupled from DC voltage This is necessary because t...

Страница 48: ...enna matching circuit Normally R101 is 0Ω C101 and C102 are not mounted D101 in Figure 46 and Figure 47 is used for ESD to protect antenna In order to avoid damaging the module TVS can be used The TVS suggested can refer to Table 35 Table 35 Recommended transient voltage suppressor Vendor Part number Packages 1 Marata LXES03AAA1 154 0201 2 Marata LXES15AAA1 153 0402 4 19 2 FM Antenna Interface The...

Страница 49: ...tenna as an example the pin GND of the 3 5mm earphone is connected to the FM interface The circuit is recommended as following Moudle GND R303 C303 C304 FM_ANT Figure 49 GND pin of the earphone use to be the FM antenna interface Normally R303 are 0Ω C303 C304 are not mounted S I M C O M C O N F I D E N T I A L F I L E ...

Страница 50: ...minate interfere or noise by greatest degree and save product development period 5 1 Pin Assignment Before PCB layout we should learn well about pin assignment in order to get reasonable layout with so many external components Following figure is the overview of pin assignment of the module GND GND GND USB_DP GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND VBAT VBUS Audio SIM FM antenn...

Страница 51: ...uld enhance the GND performances On the upper layer of these pads do not trace any signal if possible 5 2 3 SIM Card Interface SIM card holder has no anti EMI component inside Thus SIM card interface maybe interfered please pay more attention on this interface during layout Ensure SIM card holder is far way from antenna or RF cable inside Put SIM card holder near the module as nearer as possible A...

Страница 52: ...Smart Machine Smart Decision SIM800L MT6261 _Hardware Design_V1 01 52 2016 07 07 Figure 51 Recommended PCB layout S I M C O M C O N F I D E N T I A L F I L E ...

Страница 53: ...6 2 Recommended Operating Conditions Table 37 Recommended operating conditions Symbol Parameter Min Typ Max Unit VBAT Power supply voltage 3 4 4 0 4 4 V VBUS USB operating voltage 4 3 5 0 7 V TOPER Operating temperature 40 25 85 TSTG Storage temperature 45 90 6 3 Digital Interface Characteristics Table 38 Digital interface characteristics Symbol Parameter Min Typ Max Unit VIH High level input volt...

Страница 54: ... Min Typ Max Unit VO Output voltage 3 0 V 1 8 IO Output current 10 mA 6 6 VDD_EXT Characteristics Table 41 VDD_EXT characteristics Symbol Parameter Min Typ Max Unit VO Output voltage 2 7 2 8 2 9 V IO Output current 50 mA 6 7 VRTC Characteristics Table 42 VRTC characteristics Symbol Description Min Typ Max Unit VRTC IN VRTC input voltage 1 2 2 8 3 0 V IRTC IN VRTC input current 3 0 5 0 uA VRTC OUT ...

Страница 55: ...EGSM900 DCS1800 PCS1900 330 72 320 78 218 28 219 08 mA mA mA mA Data mode 4Rx 1Tx GSM850 EGSM900 DCS1800 PCS1900 221 41 211 45 155 52 157 49 mA mA mA mA IMAX Peak current During Tx burst 2 0 A Note In above table the current consumption value is the typical one of the module tested in laboratory In the mass production stage there may be differences among each individual 6 9 Electro Static Discharg...

Страница 56: ...ification requirement Table 45 GSM850 and EGSM900 conducted RF output power GSM850 EGSM900 PCL Nominal output power dBm Tolerance dB for conditions Normal Extreme 5 33 2 2 5 6 31 3 4 7 29 3 4 8 27 3 4 9 25 3 4 10 23 3 4 11 21 3 4 12 19 3 4 13 17 3 4 14 15 3 4 15 13 3 4 16 11 5 6 17 9 5 6 18 7 5 6 19 31 5 5 6 Table 46 DCS1800 and PCS1900 conducted RF output power DCS1800 PCS1900 PCL Nominal output ...

Страница 57: ...cted RF receive sensitivity Frequency Receive sensitivity Typical Receive sensitivity Max GSM850 EGSM900 108dBm 106dBm DCS1800 PCS1900 108dBm 106dBm 6 10 3 Module Operating Frequencies The following table shows the module s operating frequency range it is followed by the 3GPP TS 05 05 technical specification requirement Table 48 Operating frequencies Frequency Receive Transmit GSM850 869 894MHz 82...

Страница 58: ...ttom View of SIM800L Figure 52 Top and bottom view of SIM800L 7 2 Typical Solder Reflow Profile Figure 53 Typical solder reflow profile of lead free processes Note Please refer to Module secondary SMT UGD for more information about the module shipping and manufacturing S I M C O M C O N F I D E N T I A L F I L E ...

Страница 59: ...rements SIM800L 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 t he ai rh 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 below table otherwise the module will ...

Страница 60: ...E interface for Short Message Service SMS and Cell Broadcast Service CBS 7 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 8 GSM 11 11 Digital cellular telecommunications system Phase 2 Specification of the Subscriber Identity Module Mobile Equipment SIM ME interface 9 GSM...

Страница 61: ...Communications HR Half Rate IMEI International Mobile Equipment Identity Li ion Lithium Ion MO Mobile Originated MS Mobile Station GSM engine also referred to as TE MT Mobile Terminated PAP Password Authentication Protocol PBCCH Packet Broadcast Control Channel PCB Printed Circuit Board PCL Power Control Level PCS Personal Communication System also referred to as GSM 1900 PDU Protocol Data Unit PP...

Страница 62: ...book abbreviations FD SIM fix dialing phonebook LD SIM last dialing phonebook list of numbers most recently dialed MC Mobile Equipment list of unanswered MT calls missed calls ON SIM or ME own numbers MSISDNs list RC Mobile Equipment list of received calls SM SIM phonebook NC Not connect S I M C O M C O N F I D E N T I A L F I L E ...

Страница 63: ... 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 he...

Страница 64: ...07 07 Contact us Shanghai SIMCom Wireless Solutions Co Ltd Address Building A SIM Technology Building No 633 Jinzhong Road Shanghai P R China 200335 Tel 86 21 32523300 Fax 86 21 32523020 Email simcom sim com Website www simcomm2m com S I M C O M C O N F I D E N T I A L F I L E ...

Результаты поиска

Содержание SIM800L

Отзывы:

Похожие инструкции для SIM800L

Бренды по названию

Популярные бренды

SimCom SIM800L, Проектирование аппаратного обеспечения

Результаты поиска

Содержание SIM800L

Отзывы:

Похожие инструкции для SIM800L

Бренды по названию

Популярные бренды