
SIM900E Document
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User Manual
1.
SIM900E Description
1.1.
Summarize
SIM900E designed by SIMCom is a quad-band module which supports GSM/GPRS. The baseband circuit is
based on STE and RF circuit is based on RFMD. It works at quad bands------GSM 850MHz, EGSM 900MHz,
DCS 1800MHz and PCS 1900MHz. CPU clock is based on 26MHz crystal. The main IC includes PNX4851,
RF7176 and Flash, etc.
1.2.
Feature
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Quad-band 900/1800/850/1900MHz
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GPRS multi-slot class 10/8
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GPRS mobile station class B
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Compliant to GSM phase 2/2+
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Class 4 (2W) at GSM 850 and EGSM 900
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Class 1 (1W) at DCS 1800 and PCS 1900
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Dimensions: 19.8*19.8*2.7mm
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Weight: 2.4 g
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Control via AT commands (GSM 07.07 ,07.05 and SIMCom enhanced AT Commands)
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Supply voltage range 3.2V ~ 4.8V
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Low power consumption
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Operation temperature:
-30°C ~ +80°C
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69 SMT pads include
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Interface to external SIM 3V/1.8V
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Analog audio interface
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RTC backup
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Serial interface
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LCD interface
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Antenna pad
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GPIO
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ADC