Development Kit Manual SIM900-EVB_UGD_V1.
SIM900 EVB User Guide Document Title: SIM900 EVB User Guide Version: 1.01 Date: 2009-12-8 Status: Release Document Control ID: SIM900-EVB_UGD_V1.01 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.
SIM900 EVB User Guide Contents Contents ............................................................................................................................................3 Version History .................................................................................................................................3 1. SIM900 EVB.................................................................................................................................5 2. EVB accessory .....................
SIM900 EVB User Guide Version History Data Version Description of change Author 2009-12-08 1.01 Origin Lee SCOPE 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.
SIM900 EVB User Guide 1. SIM900 EVB Figure 1: EVB TOP view SIM900-EVB_UGD_V1.01 5 08.12.
SIM900 EVB User Guide Figure 2: EVB BOTTOM view A: B: C: D: E: F: G: H: I: J: K: L: M: N: O: P: Q: Source adapter interface MAIN serial port for downloading, AT command transmitting, data exchanging DEBUG serial port SIM card interface Test point interface Antenna fix hole SIM900-TE with SIM900 module interface Module fix hole Reset key ( reset the module ) Power key ( module ON/OFF control ) Charge switch ( charge ON/OFF control ) Download switch ( download control ) Power switch ( power ON/OFF control )
SIM900 EVB User Guide 2. EVB accessory Figure 3: EVB accessory A: antenna B: antenna transmit line C: 5V DC source adapter D: serial port line SIM900-EVB_UGD_V1.01 7 08.12.
SIM900 EVB User Guide 3. Accessory Interface 3.1 Power Interface Figure 4: Power Interface Pin Signal I/O 1 Adapter input I SIM900-EVB_UGD_V1.01 Description 5V/2.5A DC source input 8 08.12.
SIM900 EVB User Guide 3.2 Audio Interface Figure 5: Audio Interface Headset interface: Pin Signal I/O Description 1 MIC1P I Positive microphone input 2 SPK1P O Positive receiver output 3 MIC1N I Negative microphone input 4 SPK1N O Negative receiver output Earphone interface: Pin Signal Input/Output 5 MIC2P&SPK2P I/O Description Auxiliary positive input and output Line in interface: Pin Signal Input/Output 6 Line in R/L I/O SIM900-EVB_UGD_V1.
SIM900 EVB User Guide 3.3 SIM card interface Figure 6: SIM card interface SIM900-EVB_UGD_V1.01 10 08.12.
SIM900 EVB User Guide 3.4 Antenna Interface Figure 7: Antenna Interface SIM900-EVB_UGD_V1.01 11 08.12.
SIM900 EVB User Guide 3.
SIM900 EVB User Guide 3.6 Operating Status LED Figure 9: StatusLED Working state of status LED as list: Name Description STATUS VBAT ON/OFF indicator Bright：VBAT ON; Extinct: VBAT OFF Q2 GSM part status indicator Bright: Module runs normally Extinct: System is powered unconventionally Q3 GSM_NET status indicator Blinking at a certain frequency according various GSM net status Q1 SIM900-EVB_UGD_V1.01 13 down or module 08.12.
SIM900 EVB User Guide 4. Test Interface Figure 10: Test interface overview 4.1 J103 Figure 11: J103 Interface J103 Interface Pin List: Pin Signal I/O Description 1 DISP_D/C O Display data or address select 2 DISP_CS O Display select output 3 DISP_CLK O Display clock output 4 DISP_DAT I/O Display data line 5 GPO1 O GPO 6 ADC I ADC IN SIM900-EVB_UGD_V1.01 14 08.12.
SIM900 EVB User Guide 7 GPIO1 I/O GPIO 8 TEMP_BAT I ADC input 9 SIMPRESENCE I SIM detect input 10 PWM1 O PWM output 11 SDA I/O I2C BUS DATA 12 SCL O I2C BUS CLOCK 13 GND POWER GND 14 PWM2 O PWM output 4.2 J201 Figure 12: J201 Interface J201 Interface Pin List: Signal I/O TXD O Description Pin 1 SIM900-EVB_UGD_V1.01 Transmit data 15 08.12.
SIM900 EVB User Guide 2 RXD I Receive data 3 DCD O Data carrier detection 4 RI O Ring Indicator 5 CTS O Clear to Send 6 GND 7 DTR I Data Terminal Ready 8 DEBUG_RX I Receive data 9 RTS I Request to Send 10 DEBUG_TX O Transmit data I/O Description GND 4.3 J104 Figure 13: J104 Interface J104 Interface Pin List: Pin Signal 1 KCOL0 2 KROW0 3 KCOL1 4 KROW1 5 KCOL2 6 KROW2 SIM900-EVB_UGD_V1.01 Keypad array interface I 16 08.12.
SIM900 EVB User Guide 7 KCOL3 8 KROW3 9 KCOL4 10 KROW4 11 PWRKEY_OUT O POWER KEY OUT 12 PWRKEY I POWER KEY IN 13 GND POWER GND 14 VBAT POWER POWER SIM900-EVB_UGD_V1.01 17 08.12.
SIM900 EVB User Guide 5. EVB and accessory equipment At normal circumstance, the EVB and its accessory are equipped as the Figure 14 Figure 14: EVB and accessory equipment SIM900-EVB_UGD_V1.01 18 08.12.
SIM900 EVB User Guide 6. Illustration: 6.1 Running: (1) Connect the SIM900-TE with SIM900 module to the 60pins connector on SIM900 EVB, inserting 5V direct current source adapter, switching the S101,S102 switch on off state, S105 switch on ON state; (2) Press the PWRKEY for about 1 second, and then SIM900 module begins running. You can see the light Q3 on the EVB flashing at a certain frequency. By the state, you can judge whether the EVB and SIM900 can run or not.
SIM900 EVB 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 SIM900-EVB_UGD_V1.01 20 08.12.
