SIM800C_User Manual_ V1.
SIM900-DS Document 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.
Smart Machine Smart Decision 1. SIM800C Description 1.1. Summarize SIM800C 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. The main IC include MT6261M and RF7198. 1.2.
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Smart Machine Smart Decision 1.4. Picture Figure 1: Top and Bottom view of SIM800C 1.5.
Smart Machine Smart Decision 2. Detail Block Diagram Figure 3: Block diagram of SIM800C 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 SIM800C. Table 1: Absolute maximum ratings Symbol Min Typ Max Unit VBAT - - 4.5 V Current 0 - 2.
Smart Machine Smart Decision Symbol Parameter Min Typ Max Unit VIH High-level input current 2.1 - 3.1 V VIL Low-level input current -0.3 - 0.7 V VOH High-level output voltage 2.4 - - V VOL Low-level output voltage - - 0.4 V *Note: These parameters are for digital interface pins, such as keypad, GPIO and UART. 3.3. SIM Card Interface Characteristics Table 3: SIM card interface characteristics Symbol Parameter Min Typ Max Unit IIH High-level input current -1.0 - 1.
Smart Machine Smart Decision IRTC-OUT VRTC output current - 2.0 mA 3.6. Current Consumption (VBAT = 4.0V) Table 6: Current consumption Symbol Parameter Conditions Voltage Typ Max Unit 3.4 4.0 4.4 V Power drop PCL=5 350 mV Voltage ripple PCL=5 @ f<200kHz @ f>200kHz 50 2.0 mV mV 150 uA VBAT IVBAT Min Average currnet Power down mode 130 Sleep mode (AT+CFUN=1)： ( BS-PA-MFRMS=9 ) ( BS-PA-MFRMS=5) ( BS-PA-MFRMS=2) 0.98 1.12 1.
Smart Machine Smart Decision IMAX Peak current During Tx burst 2.0 A 3.7. Electro-Static Discharge SIM800C 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.
Smart Machine Smart Decision 16 11 ±5 ±6 17 9 ±5 ±6 18 7 ±5 ±6 19-31 5 ±5 ±6 Table 9: SIM800C DCS 1800 and PCS 1900 conducted RF output power DCS1800,PCS1900 PCL Nominal output power (dBm) 0 Tolerance (dB) for conditions Normal Extreme 30 ±2 ±2.
Smart Machine Smart Decision Frequency Receive sensitivity（Typical） Receive sensitivity(Max) GSM850,EGSM900 < -109dBm < -107dBm DCS1800,PCS1900 < -109dBm < -107dBm 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.
Smart Machine Smart Decision The RF connector is used for conduction test. If the space between RF pin and antenna is not enough, the matching circuit should be designed as in the following figure: 0R NC NC Figure5: GSM antenna matching circuit without RF connector Normally R101 is 0Ω, C101 and C102 are not mounted.
Smart Machine Smart Decision 5.1. Dipole Antenna PCB Layout Requirements 5.2. 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 LAYER1 - TOP LAYER2 - BOTTOM - 14 -
Smart Machine Smart Decision MATERIAL BUILD-UP - 15 -
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Smart Machine Smart Decision 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 3252 3300 Fax: +86 21 3252 2030 URL: www.sim.
