WM620 Hardware User Guide V1.1 Neo_WM620 User Manual Version V1.0 Let's enjoy the wireless life All rights reserved by Shenzhen Neoway Technology Co., Ltd.
WM620 Hardware User Guide V1.1 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.
WM620 Hardware User Guide V1.1 Revision History Document Version Content Revised Date V1.0 First issue 2013.09 V1.1 Add UART description 2013.10 All rights reserved by Shenzhen Neoway Technology Co., Ltd.
WM620 Hardware User Guide V1.1 Contents 1 Features and Description ................................................................................................................................. 2 1.1 HW block diagram and block description ................................................................................................... 2 1.2 Key Features ................................................................................................................................................ 2 1.
WM620 Hardware User Guide V1.1 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 32.
WM620 Hardware User Guide Dimension (mm) Power supply AT Command V1.1 30*30*2.7 DC power input range 3.3 Volts to 4.2 Volts（recommended 3.9V ） 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 UMTS/WCDMA/GSM/GPRS/EDGE Specification Release ‘99 (3GPP R99) UMTS/WCDMA Specification Release 5 (3GPP R5) Technical Standard HSDPA and equalizer; 3.
WM620 Hardware User Guide 1.3 V1.1 Pin assignment and description Pin NO. Pin Name I/O GND PWR Pad group Description COMMENT 1、12、 17、21、 GND 24、34、 Ground 43、45、 50、61 NC NC NC 2 NC Reserved 3 NC Reserved 4 NC Reserved 5 NC Reserved 6 NC Reserved 7 NC Reserved 8 NC Reserved 9 NC Reserved 10 NC Reserved 11 NC Reserved 13 V_SIM PWR 1.8V/2.8V USIM VCC 14 SIM_RST O 1.8V/2.
WM620 Hardware User Guide V1.1 26 VDD_1.8V PWR 27 VDD_2.6V PWR 28 EAR_1P AO 29 EAR_1N AO 30 MIC_1N AI 31 MIC_1P AI 32 NC 33 NC 35 NC 36 NC 37 NC 38 NC 39 NC 40 NC 41 NC 42 NC 44 ANT_M Linear 1.8V output Power Audio interface NC ANT regulator Linear regulator 2.
WM620 Hardware User Guide V1.1 indicating Output NC High-speed UART clear to send signal High-speed UART ready for receive signal High-speed UART (allow input 3V) receive data input High-speed UART transmit data output Reserved 52 CTS I VDD_2.6V 53 RTS O VDD_2.6V 54 RXD I VDD_2.6V 55 TXD O VDD_2.6V 56 NC 57 NC Reserved 58 NC Reserved 59 NC Reserved 60 SLEEP_IN DI 62 NC NC VDD_1.8V All rights reserved by Shenzhen Neoway Technology Co., Ltd.
WM620 Hardware User Guide V1.1 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.
WM620 Hardware User Guide V1.1 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.
WM620 Hardware User Guide V1.1 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.
WM620 Hardware User Guide Table 2-2 V1.1 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).
WM620 Hardware User Guide V1.1 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.
WM620 Hardware User Guide V1.1 Figure 2-6a Figure 2-6b 2.3.2 Ring PIN Signal Name I/O 51 RING O Function Description Ring output DC Characteristics (V) 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.
WM620 Hardware User Guide 2.4 V1.1 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.
WM620 Hardware User Guide V1.1 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.
WM620 Hardware User Guide 2.6 V1.1 UART Pin Pin Name I/O Function description 52 CTS I 53 RTS O 54 RXD I High-speed UART clear to send signal High-speed UART ready for receive signal 55 TXD O High-speed UART receive data input High-speed UART transmit data output Note (allow input 3V) 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.
WM620 Hardware User Guide V1.1 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.
WM620 Hardware User Guide 2.7 V1.1 Audio interface Table 2-4, Audio interface PIN Signal Name I/O Function Description 28 EAR_1P AO Earphone amplifier output（+） 29 EAR_1N AO Earphone amplifier output（-） 30 MIC_1N AI Microphone #1 input (-) 31 MIC_1P AI Microphone #1 input (+) Note 32Ω Earpiece; typical:35mW 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.
WM620 Hardware User Guide V1.1 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.
WM620 Hardware User Guide 3.3 V1.1 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℃.
WM620 Hardware User Guide V1.1 4 Typical Application SCH All rights reserved by Shenzhen Neoway Technology Co., Ltd.
WM620 Hardware User Guide V1.
WM620 Hardware User Guide V1.1 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 All rights reserved by Shenzhen Neoway Technology Co., Ltd.
WM620 Hardware User Guide V1.1 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.
WM620 Hardware User Guide V1.1 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.
