SimCom SIM900B User Manual
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SimCom SIM900B User Manual

SimCom SIM900B User Manual

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SIM900B _EVB Kit_User
Guide_V1.02

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Summary of Contents for SimCom SIM900B

  • Page 1 SIM900B _EVB Kit_User Guide_V1.02...
  • Page 2 Document Control ID: General Notes Simcom offers this information as a service to its customers, to support application and engineering efforts that use the products designed by Simcom. The information provided is based upon requirements specifically provided to Simcom by the customers. Simcom has not undertaken any independent search for additional relevant information, including any information that may be in the customer’s possession.

  • Page 3: Table Of Contents

    SIM900B EVB kit User Guide Contents SIM900B EVB..........................8 EVB Accessory ........................10 Accessory Interface......................... 11 Power Interface ......................11 Audio Interface......................11 SIM Card Interface......................12 Antenna Interface ......................13 Main Interface and Debug Interface................14 Operating Status LED ....................15 Test Interface...........................16 J1---RS232 ........................16 J2---KEY &...
  • Page 4 SIM900B EVB kit User Guide Table Index TABLE 1: EVB DESCRIPTION......................9 TABLE 2: EVB ACCESSORY ......................10 TABLE 3: POWER INTERFACE......................11 TABLE 4: HEADSET INTERFACE...................... 11 TABLE 5: HANDSET INTERFACE .....................12 TABLE 6: MAIN INTERFACE ......................14 TABLE 7: DEBUG INTERFACE ......................14 TABLE 8: WORKING STATE OF STATUS LED.................15...
  • Page 5 SIM900B EVB kit User Guide Figure Index FIGURE 1:EVB TOP VIEW ........................8 FIGURE 2:EVB BOTTOM VIEW......................9 FIGURE 3: EVB ACCESSORY......................10 FIGURE 4: POWER INTERFACE ......................11 FIGURE 5: AUDIO INTERFACE ......................11 FIGURE 6: SIM CARD INTERFACE....................12 FIGURE 7: ANTENNA INTERFACE ....................13 FIGURE 8: MAIN INTERFACE AND DEBUG INTERFACE.............14...
  • Page 6 SIM900B EVB kit User Guide Version History Date Version Description of change Author 2010-04-14 1.01 Origin Huangqiuju 2010-11-01 1.02 Add SIM900S\SIM940S\CMCC900 moduls Sunshengwu SIM900B_EVB kit_User Guide_V1.02 2010-11-10...
  • Page 7 SIM900B EVB kit User Guide SCOPE This document give the usage of SIM900B EVB, user can get useful inforamtion about the SIM900B EVB quickly through this document. The SIM900B EVB can be used to evaluate following SIMCom modules: SIM900B SIM900S\SIM940S CMCC900 This document is subject to change without notice at any time.

  • Page 8: Sim900B Evb

    SIM900B EVB kit User Guide 1 SIM900B EVB Figure 1:EVB top view SIM900B_EVB kit_User Guide_V1.02 2010-11-10...

  • Page 9: Table 1: Evb Description

    Download switch, turn on or turn off download function VBAT switch, switch the voltage source from the adaptor or external battery PWRKEY key, turn on or turn off SIM900B Buzzer Expand port, such as keypad port, main and debug serial port, display port...

  • Page 10: Evb Accessory

    SIM900B EVB kit User Guide 2 EVB Accessory Figure 3: EVB accessory Table 2: EVB accessory Part Description 5V DC adapter Headset Antenna transmit cable Antenna Serial port cable SIM900B_EVB kit_User Guide_V1.02 2010-11-10...

  • Page 11: Accessory Interface

    SIM900B EVB kit User Guide 3 Accessory Interface Power Interface Figure 4: Power interface Table 3: Power interface Signal Description Adapter input 5V/2.5A DC source input Audio Interface Figure 5: Audio interface Table 4: Headset interface Signal Description MIC2P&SPK2P Auxiliary positive input and output SIM900B_EVB kit_User Guide_V1.02...

  • Page 12: Sim Card Interface

    SIM900B EVB kit User Guide Table 5: Handset interface Signal Description MIC1P Positive microphone input SPK1P Positive speak output SPK1N Negative speak output MIC1N Negative microphone input SIM Card Interface Figure 6: SIM card interface SIM900B_EVB kit_User Guide_V1.02 2010-11-10...

  • Page 13: Antenna Interface

    SIM900B EVB kit User Guide Antenna Interface Figure 7: Antenna interface SIM900B_EVB kit_User Guide_V1.02 2010-11-10...

  • Page 14: Main Interface And Debug Interface

    SIM900B EVB kit User Guide Main Interface and Debug Interface Figure 8: Main interface and debug interface Table 6: Main interface Signal Description Data carrier detection Transmit data Receive data Data Terminal Ready Request to Send Clear to Send Ring Indicator...

  • Page 15: Operating Status Led

    SIM900B EVB kit User Guide Operating Status LED Figure 9: Status LED Table 8: Working state of status LED State Module function Module is not running Module does not find the network 64ms On/ 800ms Off Module find the network...

  • Page 16: Test Interface

    SIM900B EVB kit User Guide 4 Test Interface Figure 10: Test interface overview J1---RS232 Figure 11: J1 interface Table 9: RS232 pin list Signal Description Transmit data Receive data Data carrier detection Ring Indicator Clear to Send Data Terminal Ready...

  • Page 17: J2---Key & Ctrl

    SIM900B EVB kit User Guide J2---KEY & CTRL Figure 12: J2 interface Table 10: KEY & CTRL pin list Signal Description KBC0 KBR0 KBC1 KBR1 KBC2 Keypad array interface KBR2 KBC3 KBR3 KBC4 KBR4 PWRKEY Power on key VBAT VBAT SIM900B_EVB kit_User Guide_V1.02...

  • Page 18: J3---Lcd & I/O

    SIM900B EVB kit User Guide J3---LCD & I/O Figure 13: J3 interface Table 11: LCD & I/O interface pin list Signal Description DISP_DATA Display data line DISP_D/C Display data or address select DISP_CLK Display clock output DISP_RST Display reset outplay...

  • Page 19: Evb And Accessory Equipment

    SIM900B EVB kit User Guide 5 EVB and Accessory Equipment At normal circumstance, the EVB and its accessory are equipped as shown in the following figure. Figure 14: EVB and accessory equipment SIM900B_EVB kit_User Guide_V1.02 2010-11-10...

  • Page 20: Illustration

    Turns off Press the PWRKEY for about 1 second, SIM900B module will be turned off. Note: The SIM900B EVB is almost the same with the SIM300 EVB. The difference between the two EVBs are as following: ● Board to board connector: on SIM900B EVB, the connector is SUNCAGEY’s BB530-06001-20R;...
  • Page 21 SIM900B EVB kit User Guide Contact 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 3301 URL: www.sim.com/wm SIM900B_EVB kit_User Guide_V1.02 2010-11-10...

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