EDW-ML8012 GSM GPRS Modem User Manual
Contents
1. RF part of the module will not work or the SIM card will not be mode without accessible or both RF part and SIM card will be closed all but the serial functionality port is still accessible The power consumption in this case is very low removing power supply 3 3 Power up and power down scenarios 3 3 1 Power On Customer s application can turn on the module by driving the pin PWRKEY to a high level voltage and after STATUS pin outputs a high level PWRKEY pin can be released Customer may monitor the level of the STATUS pin to judge whether the module is power on or not If the STATUS pin is ignored pull the PWRKEY pin to high level for more than 2 seconds to turn on the module The power on timing is illustrated as following figure2 Page 7 EDW ML8012 GSM GPRS Modem User s Manual PWRKEY INPUT STA Aims OUTPUT i i Figure 2 Timing of turn on the module Note The module is set to auto baud rate mode AT IPR 0 in default configuration In the auto baud rate mode the URC RDY after powering on is not sent to host controller AT command can be sent to the module 2 3 seconds after the module is powered on Host controller should firstly send an AT or at string in order that the module can detect baud rate of host controller and it should send the second or the third AT or at string until receiving OK string from modu2. B Temperature range e Normal operation 35 C 80 C e Restricted operation 45 C 35 C and 80 C 85 C e Storage temperature 45 C 90 C DATA GPRS e GPRS data downlink transfer max 85 6 kbps e GPRS data uplink transfer max 85 6 kbps e Coding scheme CS 1 CS 2 CS 3 and CS 4 e Support the protocols PAP Password Authentication Protocol Page 3 EDW ML8012 GSM GPRS Modem User s Manual usually used for PPP connections CSD e Internet service protocols TCP UDP FTP HTTP e Support Packet Switched Broadcast Control Channel PBCCH e CSD transmission rates 2 4 4 8 9 6 14 4 kbps non transparent e Unstructured Supplementary Services Data USSD support e MT MO CB Text and PDU mode e SMS storage SIM card Group 3 Class 1 and Class 2 SIM interface Port SIM card 1 8V 3V Protected against ESD with a TVS diode array Serial interface e Support from 4800 bps to 115200 bps default auto baud rate e UART default 3 3V TTL level optional SV TTL level e Embed standard AT command GSM07 05 and 07 07 Phonebookmanagement Support phonebook types SM FD LD RC ON MC SIM Application Toolkit Support SAT class 3 GSM 11 14 Release 99 Physical characteristics 58 46 12mm 1 When the module works in this temperature range the deviations from the GSM specification might occur For example the frequency error or the phase error could increase Table 2 Coding schemes and maximum net data rates over air
3. GSM GPRS Modem User s Manual 1 Introduction This document defines the EDW ML8012 module series and describes the hardware interface of the EDW ML8012 module that connects to the customer application This document can help customer quickly understand module interface specifications electrical and mechanical details With the help of this document associated application notes and user guide customer can use EDW ML8012 module to design and set up mobile applications uickly Product concept The EDW ML8012 is a Quad band GSM GPRS engine that works at frequencies GSM850MHz GSM900MHz DCS1800MHz andPCS1900MHz The EDW ML8012 features GPRS multi slot class 12 and supports the GPRS coding schemes CS 1 CS 2 CS 3 and 8012 is integrated with Internet service protocols which are TCP UDP FTP and HTTP Extended AT commands have been developed for customer to use these Internet service protocols easily Table 1 Module key features Feature Implementation Power supply Single supply voltage 6 0V 24 0V 5 0V Customize Frequency bands e Quad band GSM850 GSM900 DCS1800 PCS1900 e The module can search these frequency bands automatically e The frequency bands can be set by AT command e Compliant to GSM Phase 2 2 Transmitting power Class 4 2W at GSM850 and GSM900 eClass 1 1 W at DCS1800 and PCS1900 GPRS connectivity e GPRS multi slot class 12 default e GPRS multi slot class 1 12 configurable e GPRS mobile station class
4. SMS from the system normally GSM IDLE Software is active The module has registered to the GSM network and the module is ready to send and receive GSM TALK GSM connection is going In this mode the power consumption is decided by the configuration of Power Page 6 EDW ML8012 GSM GPRS Modem User s Manual Control Level PCL dynamic DTX control and the working RF band GPRS IDLE The module is not registered to GPRS network The module is not reachable through GPRS channel GPRS The module is registered to GPRS network but no STANDBY SER gt PDP context is active ar SGSN knows the Routing Area where the module is located at GPRS The PDP context is active but no data transfer is going READY on The module is ready to receive or send GPRS data The SGSN knows the cell where the module is located at GPRS DATA There is GPRS data in transfer In this mode power consumption is decided by the PCL working RF band and GPRS multi slot configuration Normal shutdown by sending the AT OPOWD 1 command using the PWRKEY pin The power management ASIC disconnects the power supply from the base band part ofthe module and only the power supply for the RTC 1s remained Software is not active The serial interfaces are not accessible Operating voltage connected to VBAT remains applied Minimum Use the AT CFUN command can set the module to a minimum functionality mode without removing the power supply In this case the
5. hardware interface signal can be used to lead system to SLEEP mode 3 4 1 Minimum functionality mode Minimum functionality mode reduces the functionality of the module to minimum level thus minimizes the current consumption when the slow clocking mode 1s activated at the same time This mode is set with the AT CFUN command which provides the choice of the functionality levels lt fun gt 0 1 4 e0 Minimum functionality e 1 Full functionality default e4 Disable both transmitting and receiving of RF part If the module is set to minimum functionality by AT CFUN 0 the RF function and SIM card function would be closed In this case the serial port is still accessible but all AT commands correlative with RF function or SIM card function will not be accessible If the module has been set by AT CFUN 4 the RF function will be closed the serial port is still active In this case all AT commands correlative with RF function will not be accessible After the module is set by AT CFUN 0 or AT CFUN 4 it can return to full functionality by AT CFUN 1 For detailed information about AT CFUN please refer to AT command manual Page 10 EDW ML8012 GSM GPRS Modem User s Manual 3 4 2 SLEEP mode slow clock mode The SLEEP mode is disabled in default software configuration Customer s application can enable this mode by AT QSCLK 1 On the other hand the default setting is AT Q
6. interface CS 2 13 4kbps Page 4 EDW ML8012 GSM GPRS Modem User s Manual 3 Application interface 3 1Pin Description ML8012 V1 0 del ef ee at at ane d a en Figure 1 Pin distribution T su E a HE mu Dane 0000 Table 3 Pin a 6 0V 24 0V 5 0V Customize TTL level Default 3 3V TTL 5 0V TTL Optional UART Transmitting data TTL level 3 3V and 5 0V TTL Compatible Page 5 EDW ML8012 GSM GPRS Modem User s Manual TTL level 3 3V and 5 0V TTL Compatible Data terminal ready TTL level Default 3 3V TTL 5 0V TTL Optional Ring indicator TTL level Default 3 3V TTL 5 0V TTL Optional Used to indicate the module operating status High level indicates module powered on and low level indicates powered off TTL level 3 3V and 5 0V TTL Compatible Power on off control input PWRKEY should be pulled up for a moment to turn on or turn off the module 3 2 Operating modes The table below briefly summarizes the various operating modes referred to in the following chapters Table 4 Overview of operating modes Normal GSM GPRS The module will automatically go into SLEEP mode if DTR is set to high level and there is no interrupt such as GPIO interrupt or data on serial port operation SLEEP In this case the current consumption of module will reduce to the minimal level During SLEEP mode the module can still receive paging message and
7. EDW ML8012 GSM GPRS Modem User s Manual EDW ML8012 GSM GPRS Modem User s Manual oe mp iM Br als hi s Pe KR ie u TT TETT a ia FE r ar ri WM 4 the Sic m na rr fl u i PoE www eddywireless biz er sales eddywireless com Page 1 EDW ML8012 GSM GPRS Modem User s Manual Content EDW ML8012 GSM GPRS Modem User s Manual oo oo WWW II ea P A EE E E E 3 2 gt 0 06 CODE De ee Re RPE NA AAA ee 3 2 Apple In DR RC anne aa ee P 5 31 P m Dic BON nee ee ea 5 De Ojek rel ee ee ee en lee ern dee 6 3 3 Power up and power down scenari0s cocooWooooo 7 SSL POV Oa een ee ee 7 332 Powe om WON ee ee 8 3 3 3 Power down module using the PWRKEY pin 8 3 3 4 Power down module using AT command WWW 9 3 3 5 Restart module using the PWRKEY pIt cccessssssensossncnsesescsesssensesescesessneescseneesoses 9 IA POWER en en ee EE een 10 3 4 1 Minimum functionality MSIE ARA 10 34 2 SLEEP mode slow clock mode u a an an 11 3 4 3 Wake up module from SLEEP mode oooooooooo oa 11 33 Summary of state Mal SIONS re ee PA ee 11 SC lA INC AE enak EEE E E Eee 12 2 ED Ad id OS SES SEE ee re ee 12 3 1 1 Red Led is the power indication ann 12 3 7 2 Green Led is the Working state indicatiOn oooooooo 12 Aa Mechanical dimension slated ak ely ren 13 20 POU CU A TEE AN A A AA A PPA AN NN PA 14 Page 2 EDW ML8012
8. SCLK 0 and in this mode the module can t enter SLEEP mode When AT QSCLK 1 is set to the module customer s application can control the module to enter or exit from the SLEEP mode through pin DTR When DTR is set to high level and there is no on air or hardware interrupt such as GPIO interrupt or data on serial port the module will enter SLEEP mode automatically In this mode the module can still receive voice SMS or GPRS paging from network but the serial port is not accessible 3 4 3 Wake up module from SLEEP mode When the module is in the SLEEP mode the following methods can wake up the module elf the DTR Pin is pulled down to a low level it would wake up the module from the SLEEP mode The serial port will be active about 20ms after DTR changed to low level Receiving a voice or data call from network to wake up module eReceiving an SMS from network to wake up module Note DTR pin should be held low level during communicating between the module and Customer s application 3 5 Summary of state transitions Table 5 Summary of state transition Power Down Use PWRKEY p n Normal mode AT QPOWD or Set AT QSCLK 1 use PWRKEY pin and pull up the DTR pin to high level Sleep Mode Use PWRKEY pin Pull down DTR pin to low level Receiving a voice or data call from network Receiving an SMS from network Page 11 EDW ML8012 GSM GPRS Modem User s Manual 3 6 Serial interfaces The connection schemat
9. ic between EDW ML8012 and MCU ARM shown in figure 6 Dotted line optional connection If unconnected PWRKEY need to short circuit J1 jumper MCU ARM GPK ML8012 Figure 6 connect to MCU ARM 3 7LED indication 3 7 1 Red Led is the power indication 3 7 2 Green Led is the Working state indication The Working state of this LED is list in the table 6 Table 6 Working state indication Module Function The module is not running Power Off 64ms On 800ms Off The module is not synchronized with network 64ms On 2000ms Off The module is synchronized with network 64ms On 600ms Off GPRS data transfer is ongoing Page 12 EDW ML8012 GSM GPRS Modem User s Manual 4 Mechanical dimension Page 13 EDW ML8012 GSM GPRS Modem User s Manual 5 Product List EDW ML8012 Module o Page 14
10. icated by STATUS pin which is a low level voltage in this mode 3 3 4Power down module using AT command Customer s application can use an AT command AT QPOWD 1 to turn off the module This command will let the module to log off from the network and allow the software to save important data before completely disconnecting the power supply thus it is a safe way Before the completion of the power down procedure the module sends out the result code shown below NORMAL POWER DOWN After this moment no further AT command can be executed and then the module enters the POWER DOWN mode The POWER DOWN mode can also be indicated by STATUS pin which is a low level voltage in this mode 3 3 5Restart module using the PWRKEY pin Customer s application can restart the module by driving the PWRKEY to a high level voltage for certain time which is similar to the way to turn on module Before restarting the module at least Page 9 EDW ML8012 GSM GPRS Modem User s Manual 500msshould be delayed after detecting the low level of STATUS The restart scenario is illustrated as the following figure5 Turn off Delay gt 05s Restart Se er H PWRKEY INPUT STATUS OUTPUT Figure 5 Timing of restart system 3 4 Power saving Upon system requirement there are several actions to drive the module to enter low current consumption status For example AT CFUN can be used to set module into minimum functionality mode and DTR
11. le If you need to using fixed baud rate Then an AT IPR x amp W should be sent to module and save the configuration to flash memory of module After these configurations the URC RDY would be received from the Serial Port of module every time when the module is powered on Refer to Chapter AT IPR in AR command manual 3 3 2 Power on automatically If user application just connects the UART signal RXD and TXD with module user can short circuit the J1 jumper The J1 jumper shows in figure 3 Figure 3J1 jumper 3 3 3Power down module using the PWRKEY pin Customer s application can turn off the module by driving the PWRKEY to a high level voltage for certain time The power down scenario is illustrated as in Figure 4 Page 8 EDW ML8012 GSM GPRS Modem User s Manual Is Pull Op gt 0 6s VCC Logout net about 33 to 128 PWRKEY INPUT r STA OUTPUT Figure 4 Timing of turn off the module The power down procedure causes the module to log off from the network and allows the software to save important data before completely disconnecting the power supply thus it s a safe way Before the completion of the power down procedure the module sends out the result code shown below NORMAL POWER DOWN After this moment no further AT command can be executed and then the module enters the POWER DOWN mode The POWER DOWN mode can also be ind
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