Neoway Technology 1500 WCDMA Module User Manual

Shenzhen Neoway Technology Co., Ltd WCDMA Module

User Manual

WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Neo_WM620 User Manual Version V1.0 Let's enjoy the wireless life
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 1 Copyright Copyright © 2008 Neoway Technology All rights reserved. is a trade mark of Shenzhen Neoway Technology Co., Ltd. Notice This document is intended for the customer engineers. This document is subject to change without any notice. No responsibility is assumed by Neoway Technology for the use of this document. Neoway Technology always provides the best supports. For pricing, ordering information and delivery please contact: Sales@neoway.com.cn For any technical support requests please contact: Support@neoway.com.cn For further information please visit: http://www.neoway.com.cn EU Regulatory Conformance Hereby, Galaxy Microsystems Ltd. declares that this device is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Revision History Document Version Content Revised Date V1.0 First issue 2013.09 V1.1 Add UART description 2013.10
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 1 Contents 1 Features and Description ................................................................................................................................. 2 1.1 HW block diagram and block description ................................................................................................... 2 1.2 Key Features ................................................................................................................................................ 2 1.3 Pin assignment and description ................................................................................................................... 0 2 Applicable interface .......................................................................................................................................... 3 2.1 Power supply Interface ................................................................................................................................ 3 2.1.1 Power Supply Requirements ................................................................................................................ 3 2.1.2 VRTC Interface .................................................................................................................................... 5 2.1.3 Power Supply Output............................................................................................................................ 6 2.1.4 Power on Sequences ............................................................................................................................. 6 2.2 Power ON/OFF and Reset ........................................................................................................................... 6 2.2.1 ON_OFF ............................................................................................................................................... 6 2.2.2 RESET_N ............................................................................................................................................. 7 2.3 Module Status Output .................................................................................................................................. 7 2.3.1 LED Indicator ....................................................................................................................................... 7 2.3.2 Ring ...................................................................................................................................................... 8 2.4 SIM Card ..................................................................................................................................................... 9 2.5 USB Interface ............................................................................................................................................ 10 2.6 UART ......................................................................................................................................................... 11 2.6.1 Basic Descriptions of UART ............................................................................................................... 11 2.6.2 Level Translators for UART ................................................................................................................ 11 2.7 Audio interface .......................................................................................................................................... 13 3 Mechanics, Mounting and Packaging ........................................................................................................... 14 3.1 Dimension and PCB layout ....................................................................................................................... 14 3.2 Assembly ................................................................................................................................................... 14 3.3 Packaging and solder ................................................................................................................................. 15 4 Typical Application SCH ............................................................................................................................... 16 5 Abbreviations .................................................................................................................................................. 17
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 2 1 Features and Description WM620 is a WCDMA module supporting multiple modes of HSDPA/UMTS/EDGE/GPRS/GSM. The HSDPA supports 3.6Mbps downlink data rate and 384Kbps uplink data rate. WM620 provides high-quality data and voice communication, SMS and other functions, widely applied to various industrial and commercial areas. WM620 is SMT module in LCC compact package. It can be easily adapted to standard Mini PCI-E Interface. 1.1 HW block diagram and block description AntennaSwitch RAM&FLASHApplication interfaceBasebandController32.768KHzRFSectionSIMUSBUARTPCMPowerManagerAudioSection19.2MHz 1.2 Key Features Specification Description Frequency Band WM620: UMTS2100/1900/900/850MHz GSM850/900/1800/1900 MHz Sensitivity -106dBm Max. transmitter power GSM/GPRS 850M/900MHz：32±1dBm (Power Class 4) GSM/GPRS 1800MHz/1900MHz：30±0.5dBm (Power Class 1) WCDMA: 23±1dBm (Power Class 3) HSDPA:22±1dBm (Power Class 3) Transient Current Max 2A Standby Current (Idle) <5.0mA Operating Temperature Range Normal working temperature: –30°C to + 80°C Storage Temperature Range –40°C to + 85°C
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 3 Dimension (mm) 30*30*2.7 Power supply DC power input range 3.3 Volts to 4.2 Volts（recommended 3.9V ） AT Command GSM07.07 Neoway extended AT command Driver Supporting Windows XP、Linux(2.6.1)、Android Voice FR, EFR, HR, AMR Voice Coding , DTMF SMS TEXT/PDU Point of Point/ Cell Broadcast Technical Standard UMTS/WCDMA/GSM/GPRS/EDGE Specification Release ‘99 (3GPP R99) UMTS/WCDMA Specification Release 5 (3GPP R5) HSDPA and equalizer; 3.6Mbps GSM/GPRS/EDGE Specification Release 4 (3GPP R4) GPRS/EDGE Multislot Class 12, Release 4 DTM Multislot Class 11 Data Rate GSM CS: UL 14.4kbps / DL 14.4kbps GPRS:UL 85.6kbps / DL 85.6kbps EDGE: DL 236.8kbps / UL: 236.8kbps WCDMA CS: UL 64kbps / DL 64kbps WCDMA PS: UL 384kbps / DL 384kbps HSDPA: DL 3.6Mbps / UL 384kbps Circuit Switched Data Support CSD Support USSD Supplementary Service Call Transfer (CFB, CFNA, CFU) Call Waiting Three-Way Calling
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. 1.3 Pin assignment and description Pin NO. Pin Name I/O Pad group Description COMMENT GND 1、12、 17、21、24、34、 43、45、50、61 GND PWR Ground NC 2 NC Reserved 3 NC Reserved 4 NC Reserved NC 5 NC Reserved 6 NC Reserved 7 NC Reserved 8 NC Reserved NC 9 NC Reserved 10 NC Reserved 11 NC Reserved SIM card interface 13 V_SIM PWR 1.8V/2.8V USIM VCC 14 SIM_RST O 1.8V/2.8V USIM reset 15 SIM_DATA I/O 1.8V/2.8V USIM data Needs an external 10K pull-up resistance to V_SIM 16 SIM _CLK I/O 1.8V/2.8V USIM clock USB transceiver interface 18 USB_D+ I/O High-speed USB differential data (+) 19 USB_D- I/O High-speed USB differential data (-) 20 V_USB PWR USB Power input Input range from 3.3 to 5.25 V. Needs a 4.7uF decoupling MLCC Cap to GND Power 22 VBAT PWR Main battery power input 23 Reset 25 RESET_N DI VDD_1.8V Reset input
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 1 Power 26 VDD_1.8V PWR Linear regulator 1.8V output 27 VDD_2.6V PWR Linear regulator 2.6V output Audio interface 28 EAR_1P AO Earphone amplifier output（+） 29 EAR_1N AO Earphone amplifier output（-） 30 MIC_1N AI Microphone difference input1 (-) 31 MIC_1P AI Microphone difference input (+) NC 32 NC Reserved 33 NC 35 NC 36 NC 37 NC 38 NC 39 NC 40 NC 41 NC 42 NC ANT 44 ANT_M AI/A RF main antenna interface 46 ON_OFF I Control power-on and power-off Pulled up internally with a 250k to DVDD; approximately+2.8 V Indicator Light 47 VRTC PWR Coin cell backup voltage input Range 1.5~3.25VDC,Typical 3.0VDC 48 SIG_LED O VDD_2.6V Signal show LIGHT ADC 49 ADC AI 12bit ADC input Input Range：0~2.2V 51 RING O VDD_2.6V Call and SMS
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 2 indicating Output NC 52 CTS I VDD_2.6V High-speed UART clear to send signal 53 RTS O VDD_2.6V High-speed UART ready for receive signal 54 RXD I VDD_2.6V High-speed UART receive data input (allow input 3V) 55 TXD O VDD_2.6V High-speed UART transmit data output 56 NC Reserved 57 NC Reserved 58 NC Reserved 59 NC Reserved 60 SLEEP_IN DI VDD_1.8V Sleep control pin input 62 NC NC Reserved
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 3 2 Applicable interface 2.1 Power supply Interface The Power supply part of the WM620 module contains: PIN Signal name I/O Function description Note 22、23 VBAT PWR For power voltage input 47 VRTC PWR Coin cell backup voltage input 26 VDD_1.8V PWR Linear regulator 1.8V output 27 VDD_2.6V PWR Linear regulator 2.6V output Characteristics of the VBAT are shown in the table 2-1. Table 2-1, Input voltage characteristics Status Min. voltage Typical voltage Max. voltage VBAT +3.3 VDC +3.8 VDC +4.2VDC NOTE：Make sure that the VBAT can never exceed 4.5VDC. Voltage higher than 4.5VDC may damage the WM620 module. 2.1.1 Power Supply Requirements VBAT is the main power input ranged from 3.3V to 4.2V DC, 3.8V DC is recommended. The average current is less than 500mA@3.8VDC. But in the module’s transmitting mode, the largest current can burst up to 1.8A providing the RF power amplifier. The burst current may cause deep voltage drop, and trigger the module into a power reset. Thus a high value and low ESR capacitor must be installed on the VBAT, to avoid or reduce the voltage drop caused by the RF power amplifier. Figure 2-1a, current and voltage curve of VBAT
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 4 Figure 2-1b, Schematic circuit for current test The current test results related to the ESR of the capacitors and the internal resistance of the power source. A 470uF tantalum electrolytic capacitor or a 1000uF low ESR aluminum electrolytic capacitor is recommended for C1. Lithium battery is a very low resistance power source. If the VBAT is supplied by a lithium battery, 220uF or 100uF tantalum capacitor can fit the current require for VBAT. These 10uF, 0.1uF, 100pF and 33pF MLCC capacitors should be placed close to the VBAT pin. ESD, Lightning Surge or other interferences can rarely cause the WM620 to stop running. Reset the power supply can recover the module. So the power control is very important in the unattended applications. VCC_EN in figure 2-2 is the switch to control the power. The recommended design of power supply is shown in figure 2-2a. In this circuit, with the EN pin of LDO/DC-DC, power supply can be controlled by the external MCU or other master device. If the LDO or DC-DC has no EN pin, a low on-resistance P-MOSFET can work as a power switch. The P-MOSFET power switch shown in Figure 2-2b can replace the function of EN pin. Figure 2-2a
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 5 Figure 2-2b 2.1.2 VRTC Interface VRTC Pin is used as an analog input from the 3 V coin cell for SMPL(Sudden Momentary Power Loss), RTC(Real-time Clock), and crystal oscillator to keep alive power when the module is powered off. A capacitor (rather than a coin cell) can be used if only SMPL is supported (not RTC or XTAL). Figure 2-3 VRTC pin is also used as an analog output to charge a coin cell or a capacitor. When supply current is sourced from the main power supply through VBAT pin. The on-chip coin cell charger is implemented using a voltage regulator and series resistor. If the monitored VBAT drops out-of-range (< 2.55V nominal), the SMPL feature initiates a power-on sequence without software intervention, and then VBAT returns in-range within a programmable interval of between 0.5 and 2.0 seconds. SMPL achieves immediately and automatically recovery from momentary power loss. A valid voltage on VRTC is required to run the SMPL timer. If a capacitor is used instead of a coin cell, it must be connected between VRTC PIN and the ground, Figure 2-3 shows the reference RTC circuit. The capacitor must be charged to operate properly as the SMPL power source. The capacitor value depends on the SMPL timer setting. Table 2-2 shows the capacitor value of VS SMPL time.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 6 Table 2-2 Keep-alive capacitor values vs. SMPL timer settings SMPL timer setting Capacitor value Capacitor package (X7R) 0.5 sec 1.5 µF 0805 1.0 sec 3.3 µF 0805 1.5 sec 4.7 µF 0805 2.0 sec 6.8 µF 1206 2.1.3 Power Supply Output The VDD_1.8V and VDD_2.6V pins are two linear regulator outputs. These two pins can supply the same output current of 20mA (typical value). These two power supplies can be used for logic level conversion circuits between WM620 and external devices, and not recommended as a general-purpose power source for other application circuits. VDD_2.6V circuit keeps operating while the WM620 module in sleep mode. 2.1.4 Power on Sequences Figure 2-4 shows the power on sequencing of WM620. Figure 2-4 2.2 Power ON/OFF and Reset 2.2.1 ON_OFF ON_OFF is an input pin with an internal pull-up resistance. Launch a valid low level pulse to ON_OFF can control the WM620’s system into Start-up or shut-down mode. The pulse width requirement and power on sequence are shown in figure 2-4. When the WM620 power on, the VDD_2.6V pin would rise up and keep on 2.6V DC, and then the module's serial port will automatically issue a keyword string, means that the module system is running and AT commands is ready.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 7 While the WM620 is in running mode, low level pulse can put the module system into shutdown procedure. And then the module would power off within after 5S. Instead of ON_OFF pin, An AT command can also shutdown the module. For more specific, please refer to the WM620’s AT command manual. Keeps the ON_OFF low or connecting to GND, WM620 can automatically power up when VBAT is supplied. High level pulse control circuit of ON_OFF is shown in Figure 2-5： Figure 2-5 2.2.2 RESET_N RESET_N is an active low signal with an internal pull-up resistance and acts as hardware reset input. Low level pulse longer than 20mS can reset the WM620. After reset the module, power on operations, such as launch a low level pulse to the ON_OFF pin, must be done again. The recommended reset pulse is 50ms, but can not exceed 2S. Otherwise, the WM620 module will power off. If keeps the ON_OFF low or connecting to GND, the WM620 can automatically power up after reset the module. 2.3 Module Status Output 2.3.1 LED Indicator PIN Signal Name I/O Function Description DC Characteristics (V) 48 SIG_LED O running status indication Min typical max -0.3 2.6 2.9 SIG_LED is the WM620’s working status output. The SIG_LED pin can supply 8mA drive current. WM620 provide several flash mode to indicate different running status. For more specific, please refer to the WM620’s AT command manual. SIG_LED can drive the LED directly, shown in Figure 2-6a. Figure 2-6b is the reference circuit to increase the brightness of LED. The LED’s brightness depends on the value of R1 and VCC.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 8 Figure 2-6a Figure 2-6b 2.3.2 Ring PIN Signal Name I/O Function Description DC Characteristics (V) 51 RING O Ring output Min typical max -0.3 2.6 2.9 When a phone call is coming, the RING pin will issue several low level pulses. Shows in Figure 2-7. Figure 2-7 When WM620 receives a SMS, the RING pin will issue one low level pulse, Shown in Figure 2-8. The pulse width can be configured through an AT command. For more specific, please refer to the WM620’s AT command manual. Figure 2-8
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 9 2.4 SIM Card PIN Signal name I/O Function description Note 13 V_SIM PWR SIM ard power output 1.8/3.0V 14 SIM_CLK DO SIM card clock output 1.8/3.0V 15 SIM_RST DO SIM card reset output 1.8/3.0V 16 SIM_DATA I/O SIM card data input/output 1.8/3.0V WM620 module supports 3V & 1.8V SIM cards. The SIM_DATA pin needs an externally 10K pull-up resistor connected to V_SIM.The SIM_CLK is the clock signal, normally 3.25MHz. Bifurcation is not recommended at the PCB trace of SIM_CLK. Include SIM_DATA and SIM_CLK, the traces should be as short as possible and surrounded by the ground copper to reduce the RF interference. The total distributed capacitance, include the junction capacitance of the ESD diode or other device, can’t be higher than 120pF. Figure 2-9a, SIM card and ESD devices Figure 2-9b, the recommended ESD diode array Figure 2-9c, a sample of SIM card socket PIN1, VCC PIN2, RST PIN3, CLK PIN4, GND PIN5, VPP PIN6, DATA The SIM card application circuit is shown in Figure 2-9. In automotive electronics or other applications with strong ESD, ESD diodes or ESD varistors are strongly recommended, such as T1 to T4. T1 to T4 should be place closed to SIM card. In some clear applications, SIM card is installed in closed box without human touch, 22~33pF MLCC capacitors can replace the ESD diodes for cost down.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 10 Note：SIM card is very sensitive to RF interference. Serious RF interference to SIM card will cause the WM620 to miss the detection to SIM card and out of service. So, it is very importance in the PCB design listed as the following message.  The antenna should be installed a long distance away from the SIM card and SIM card traces.  The SIM card traces should be routed as short as possible and shielded with GND copper.  The ESD diodes or capacitors should be placed closed to SIM card. 2.5 USB Interface Table 2-3, USB Interface Pin Pin Name I/O Function description Note 18 USB D+ I/O High-speed USB differential data, (+) 19 USB D- I/O High-speed USB differential data, (-) 20 V_USB PWR USB Power Input voltage 3.3 to 5.5V. The WM620 module is compliant with USB2.0 full speed device. The USB2.0 specification requires the hosts such as PCs to support three USB speeds, namely low-speed (1.5Mbps), full-speed (12Mbps) and high-speed (480Mbps). The V_USB pin is an analog input. A 4.7µF decoupling MLCC capacitor to GND is strongly recommended, and should be placed as closely as possible to V_USB Pin. It will increase the USB stability. ESD diodes should be installed to these three signals. Shown in Figure 2-10. Figure 2-10 Note: The layout design of this USB should comply with the USB 2.0.  The traces of USB_D+ and USB_D- must be routed as a group of differential pair with 90Ω differential impedance.  The USB differential pair should be routed side-by-side and on the same layer.  USB_D+ and D- is a pair of high speed signals, so the trace lengths should match as well as possible.  Please to connect USB or set aside the relevant test points, to facilitate subsequent upgrade or debugging.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 11 2.6 UART Pin Pin Name I/O Function description Note 52 CTS I High-speed UART clear to send signal 53 RTS O High-speed UART ready for receive signal 54 RXD I High-speed UART receive data input (allow input 3V) 55 TXD O High-speed UART transmit data output 2.6.1 Basic Descriptions of UART UART1 is for AT commands, data sending/receiving, firmware updating, etc. As a DCE device, the module is connected to DTE as shown in Figure 2-11. Supported baud rates are 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400bps, and the default is 115200. Figure 2-11, Connection between DCE (module) and DTE The UART of WM620 works at 2.6V CMOS logic level. The voltages for input high level should not exceed 3.0V. 2.6.2 Level Translators for UART If the UART is interfacing with a MCU that has 3.3V logic levels, resistors should be connected in series with the signals, shown in figure 2-12.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 12 Figure 2-12, Interfacing with 3.3V logic levels of MCU If the UART is interfacing with a MCU that has 5V logic levels, general level translators are required, for both inputs and outputs. As shown in Figure 2-13. Figure 2-13, Interfacing with 5V logic levels of MCU Reference components: R2: 2K-10K. The higher rate the UART works at, the smaller value used R3: 4.7K-10K. The higher rate the UART works at, the smaller value used Q1: MMBT3904 or MMBT2222. High-speed transistors preferred. Used for 5V logic -> 2.6V logic: While this circuit used between MCU TXD and module RXD, the INPUT signal is connected to MCU TXD, and OUTPUT connected to module RXD. VCC_IN powered from 5V and VCC_OUT powered from 2.6V (module’s VDD_2.6V). Used for 2.6V logic -> 5V logic: It can be used between module TXD and MCU RXD as well, with INPUT connected to module TXD, and OUTPUT connected to MCU RXD. VCC_IN powered from 2.6V (module’s VDD_2.6V) and VCC_OUT powered from 5V. This applies to RING signal as well. Note: Avoid sparks and glitches on UART signals while the module is in a turning on procedure. Avoid sending any data to UART during the beginning of 2 seconds after the module being turned on.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 13 2.7 Audio interface Table 2-4, Audio interface PIN Signal Name I/O Function Description Note 28 EAR_1P AO Earphone amplifier output（+） 32Ω Earpiece; typical:35mW 29 EAR_1N AO Earphone amplifier output（-） 30 MIC_1N AI Microphone #1 input (-) 31 MIC_1P AI Microphone #1 input (+) The WM620’s typical audio interfaces are shown in Figure 2-14. The earpiece output pins are connected directly to the earpiece, each with its own bypass capacitor. The capacitor value is selected to optimize performance in each design, but a value of 100pF or less is expected (100pF is used in the example). The output power for the differential ear output is typically 35mW for a full-scale +3dBm sine wave into a 32Ω speaker. Figure 2-14
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 14 3 Mechanics, Mounting and Packaging 3.1 Dimension and PCB layout Figure 3-1, WM620 PCB foot print 3.2 Assembly The WM620 introduces 62 Pin LCC castellation technology, less pin counts and wide pitch, these features are very suitable for low-cost and simple designs with 2 layer PCB. Benefit from it’s ultra-compact size and high reliability, WM620 can be easily designed in. Moreover, WM620supports manual soldering, can adapt to mass production and also low quantity perfectly, and has low technical requirement for manufacturing equipment.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 15 3.3 Packaging and solder WM620 modules are packaged in sealed bags on delivery to guarantee a long shelf life. Package the modules again in case of opening for any reasons. If exposed in air for more than 48 hours at conditions not worse than 30°C/60% RH, a baking procedure should be done before SMT. Or, if the indication card shows humidity greater than 20%, the baking procedure is also required. The baking should last for at least 24 hours at 90℃. In order to prevent the product of from being affected with damp, caused by using the SMT way to perform the furnace welding, in the process of production and use of the costumer, we employ the way of damp-proof packing, such as Aluminum Foil Bag, desiccating agent, Humidity Indicator Cards, Suck plastic trays, and vacuolization. As a result the product is kept dry and its life span will be long. For more storage and SMT information, please refer to 《Neoway modules’ recommendation for SMT and reflow solder》.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 16 4 Typical Application SCH
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 17 5 Abbreviations ADC Analog-Digital Converter AFC Automatic Frequency Control AGC Automatic Gain Control AMR Acknowledged multirate (speech coder) CSD Circuit Switched Data CPU Central Processing Unit DAI Digital Audio interface DAC Digital-to-Analog Converter DCE Data Communication Equipment DSP Digital Signal Processor DTE Data Terminal Equipment DTMF Dual Tone Multi-Frequency DTR Data Terminal Ready EFR Enhanced Full Rate EGSM Enhanced GSM EMC Electromagnetic Compatibility EMI Electro Magnetic Interference ESD Electronic Static Discharge ETS European Telecommunication Standard FDMA Frequency Division Multiple Access FR Full Rate GPRS General Packet Radio Service GSM Global Standard for Mobile Communications HR Half Rate IC Integrated Circuit IMEI International Mobile Equipment Identity LCD Liquid Crystal Display LED Light Emitting Diode MS Mobile Station PCB Printed Circuit Board PCS Personal Communication System RAM Random Access Memory RF Radio Frequency ROM Read-only Memory
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 18 RMS Root Mean Square RTC Real Time Clock SIM Subscriber Identification Module SMS Short Message Service SRAM Static Random Access Memory TA Terminal adapter TDMA Time Division Multiple Access UART Universal asynchronous receiver-transmitter VSWR Voltage Standing Wave Ratio
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 19 Warning Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try correct the interference by one or more of the following measures: - Reorient the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into and outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment. 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. Important announcement FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. IMPORTANT NOTE: This module is intended for OEM integrator. The OEM integrator is still responsible for the FCC compliance requirement of the end product, which integrates this module. 20cm minimum distance has to be able to be maintained between the antenna and the users for the host this module is integrated into. Under such configuration, the FCC radiation exposure limits set forth for an population/uncontrolled environment can be satisfied. Any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment. USERS MANUAL OF THE END PRODUCT: In the users manual of the end product, the end user has to be informed to keep at least 20cm separation with the antenna while this end product is installed and operated. The end user has to be informed that the FCC radio-frequency exposure guidelines for an uncontrolled environment can be satisfied. The end user has to also be informed that any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment.
WM620 Hardware User Guide V1.1 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 20 LABEL OF THE END PRODUCT: The final end product must be labeled in a visible area with the following" Contains TX FCC ID: PJ7-1500 ". The FCC part 15.19 statement below has to also be available on the label: This device complies with Part 15 of 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. To comply with FCC regulations limiting both maximum RF output power and human exposure to RF radiation, the maximum antenna gain including cable loss in a mobile-only exposure condition must not exceed 1dBi in the cellular band and 1dBi in the PCS or WCDMA band. A user manual with the end product must clearly indicate the operating requirements and conditions that must be observed to ensure compliance with current FCC RF exposure guidelines. The end product with an embedded WM620 Module may also need to pass the FCC Part 15 unintentional emission testing requirements and be properly authorized per FCC Part 15. Note: If this module is intended for use in a portable device, you are responsible for separate approval to satisfy the SAR requirements of FCC Part 2.1093.

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