Simcom 2013072402 GSM/GPRS Wireless Data Module User Manual UDV 2013072402

Shanghai Simcom Ltd. GSM/GPRS Wireless Data Module UDV 2013072402

Contents

User Manual

SIM800L Document - 1 - SIM800L User Manual Compliance Information FCC Compliance Statement: This device complies with Part 15 of the FCC Rules . Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. This device must accept any interference received, including interference that may cause undesired operation. Product that is a radio transmitter is labeled with FCC ID. 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-2013072402 or Contains FCC ID: UDV-2013072402 must be used. 1. SIM800L Description 1.1. Summarize SIM800L designed by SIMCom is a quad band module which supports GSM/GPRS. The baseband circuit is based on MTK and RF circuit is based on RFMD. It works at quad bands------GSM850, EGSM900, DCS1800, and PCS1900. CPU clock is based on 26MHz crystal. The main IC includes MT6260S and RF7176. 1.2. Feature ● Quad-Band 850/900/1800/1900MHz ● GPRS multi-slot class 12/10 ● GPRS mobile station class B ● Compliant to GSM phase 2/2+ – Class 4 (2 W @ 850/900 MHz) – Class 1 (1 W @ 1800/1900MHz)
SIM800L Document - 2 - ● Dimensions: 15.8*17.8*2.4 mm ● Weight: 1.25 g ● Control via AT commands (3GPP TS 27.007, 27.005 and SIMCom enhanced AT Commands) ● Supply voltage range 3.6~4.2 V ● Low power consumption ● Operation temperature:-30~80℃ ● 88 LGA pads include – Interface to external SIM 3V/1.8V – Analog audio interface – RTC backup – Serial interface – USB interface – Keypad interface – LCD interface – Antenna pad – PCM – GPIO – ADC
SIM800L Document - 3 - 1.3. Pin 1.4. Picture Figure 1: Top and Bottom view of SIM800L
SIM800L Document - 4 - 1.5. Dimension Figure 2: Dimention
SIM800L Document - 5 - 2. Detail Block Diagram Figure 3: Block diagram of SIM800L 3. Electrical and Reliability Characteristics 3.1. Absolute Maximum Ratings The absolute maximum ratings stated in following table are stress ratings under non-operating conditions. Stresses beyond any of these limits will cause permanent damage to SIM800L. Table 1: Absolute maximum ratings Symbol Parameter Min Typ Max Unit VBAT Power supply voltage - - 4.5 V VBUS - - 30 V VBUS II* Input current - - 8 mA IO* Output current - - 8 mA *These parameters are for digital interface pins, such as keypad, GPIO, I2C, UART, LCD and DEBUG.
SIM800L Document - 6 - 3.2. Digital Interface Characteristics Table 2: Digital interface characteristics Symbol Parameter Min Typ Max Unit IIH High-level input current 2.1 - 3.1 V IIL Low-level input current -0.3 - 0.7 V VOH High-level input voltage 2.4 - - V VOL Low-level input voltage - - 0.4 V * These parameters are for digital interface pins, such as keypad, GPIO, I2C, UART, LCD, PWMs and DEBUG. 3.3. SIM Card Interface Characteristics Table 3: SIM card interface characteristics Symbol Parameter Min Typ Max Unit IIH High-level input current -1 - 1 uA IIL Low-level input current -1 - 1 uA VIH High-level input voltage 1.4 - - V 2.4 - - V VIL Low-level input voltage - - 0.27 V 0.4 V VOH High-level output voltage 1.62 - - V 2.7 - - V VOL Low-level output voltage - - 0.36 V - - 0.4 V 3.4. SIM_VDD Characteristics Table 4: SIM_VDD characteristics Symbol Parameter Min Typ Max Unit VO Output voltage 2.70 2.80 2.90 V IO Output current - - 50 mA 3.5. VRTC Characteristics Table 5: VRTC characteristics
SIM800L Document - 7 - Symbol Parameter Min Typ Max Unit VRTC-IN VRTC input voltage 2.8 V IRTC-IN VRTC input current - 3 - uA VRTC-OUT VRTC output voltage - 2.8 - V IRTC-OUT VRTC output current - 2 mA 3.6. Current Consumption (VBAT = 3.8V) Table 6: Current consumption Symbol Parameter Conditions Value Unit IVRTC VRTC current VBAT disconnects. Backup battery is 3 V 2 uA IVBAT VBAT current Power down mode 50 uA Sleep mode BS-PA-MFRMS=9 1.0 mA BS-PA-MFRMS=5 1.2 BS-PA-MFRMS=2 1.8 Idle mode GSM 850 19 mA EGSM 900 DCS 1800 PCS 1900 Voice call GSM 850 EGSM 900 PCL=5 250 mA PCL=12 110 PCL=19 76 DCS 1800 PCS 1900 PCL=0 168 PCL=7 89 PCL=15 76 Data mode GPRS(1Rx,1Tx) GSM 850 EGSM 900 PCL=5 240 mA PCL=12 110 PCL=19 83 DCS 1800 PCS 1900 PCL=0 170 mA PCL=7 95 PCL=15 80 Data mode GPRS(4Rx,1Tx) GSM 850 EGSM 900 PCL=5 270 mA PCL=12 150 PCL=19 120 DCS 1800 PCS 1900 PCL=0 205 mA PCL=7 130 PCL=15 115 Data mode GSM 850 PCL=5 440 mA
SIM800L Document - 8 - GPRS(3Rx,2Tx) EGSM 900 PCL=12 185 PCL=19 130 DCS 1800 PCS 1900 PCL=0 300 mA PCL=7 155 PCL=15 122 IVBAT-peak Peak current During Tx burst 2 A 3.7. Electro-Static Discharge SIM800L is an ESD sensitive component, so more attention should be paid to the procedure of handling and packaging. The ESD test results are shown in the following table. Table 7: The ESD characteristics (Temperature: 25℃, Humidity: 45 %) Pin Contact discharge Air discharge VBAT ±6KV ±12KV GND ±6KV ±12KV RXD, TXD ±2KV ±8KV Antenna port ±5KV ±10KV SPK_P/SPK_N/MIC_P/MIC_N ±2KV ±5KV PWRKEY ±2KV ±8KV 4. Radio Characteristics 4.1. Module RF Output Power The following table shows the module conducted output power, it is followed by the 3GPP TS 05.05 technical specification requirement. Table 8: SIM800L GSM 900 and GSM 850 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
SIM800L Document - 9 - 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 9: SIM800L DCS 1800 and PCS 1900 conducted RF output power DCS1800、PCS1900 PCL Nominal output power (dBm) Tolerance (dB) for conditions Normal Extreme 0 30 ±2 ±2.5 1 28 ±3 ±4 2 26 ±3 ±4 3 24 ±3 ±4 4 22 ±3 ±4 5 20 ±3 ±4 6 18 ±3 ±4 7 16 ±3 ±4 8 14 ±3 ±4 9 12 ±4 ±5 10 10 ±4 ±5 11 8 ±4 ±5 12 6 ±4 ±5 13 4 ±4 ±5 14 2 ±5 ±6 15 0 ±5 ±6 For the module’s output power, the following is should be noted: At GSM900 and GSM850 band, the module is a class 4 device, so the module’s output power should not exceed 33dBm, and at the maximum power level, the output power tolerance should not exceed +/-2dB under normal condition and +/-2.5dB under extreme condition.
SIM800L Document - 10 - At DCS1800 and PCS1900 band, the module is a class 1 device, so the module’s output power should not exceed 30dBm, and at the maximum power level, the output power tolerance should not exceed +/-2dB under normal condition and +/-2.5dB under extreme condition. 4.2. Module RF Receive Sensitivity The following table shows the module’s conducted receive sensitivity, it is tested under static condition. Table 10: SIM800L conducted RF receive sensitivity Frequency Receive sensitivity（Typical） Receive sensitivity(Max) GSM850 -108dBm -106dBm EGSM900 -108dBm -106dBm DCS1800 -108dBm -106dBm PCS1900 -108dBm -106dBm 4.3. 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 11: SIM800L operating frequencies Frequency Receive Transmit GSM850 869 ~ 894MHz 824 ~ 849 MHz EGSM900 925 ~ 960MHz 880 ~ 915MHz DCS1800 1805 ~ 1880MHz 1710 ~ 1785MHz PCS1900 1930 ~ 1990MHz 1850 ~ 1910MHz 5. Antenna interface There are three antenna ports for SIM800L, GSM antenna port named RF_ANT, FM antenna port named FM_ANT_P, The RF interface of the two antenna ports has an impedance of 50Ω.The maximum gain of the GSM antenna gain should not exceed 3dBi considering the SAR radio. No antenna gain may be used that would exceed the 2W EIRP power limit in 1900MHz band.  The input impendence of the antenna should be 50Ω, and the VSWR should be less than 2.  It is recommended that the GSM antenna be placed as far as better.  The isolations of the three antenna should be bigger than 30dB 5.1 GSM Antenna Interface There is a GSM antenna pad named RF_ANT for SIM800L the connection of the antenna must be decoupled
SIM800L Document - 11 - from DC voltage. This is necessary because the antenna connector is DC coupled to ground via an inductor for ESD protection. The external antenna must be matched properly to achieve best performance, so the matching circuit is necessary, the connection is recommended as following: Figure1: GSM antenna matching circuit R101，C101，C102 are the matching circuit, the value should be defined by the antenna design. normally R101 is 0Ω, C101 和C102 are not SMD. The RF connector is used for conducted. There are some suggestions to components placing and lying for GSM RF traces:  The RF connector is used for conducted test, so keep it as close as pin RF_ANT;  Antenna matching circuit should be closed to the antenna;  Keep the RF traces as 50Ω；  The RF traces should be kept far away from the high frequency signals and strong disturbing source.

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