Related Manuals for Neoway WM620-A
Summary of Contents for Neoway WM620-A
- Page 1 WM620 Hardware User Guide V1.1 Neo_WM620 Hardware User Guide Version V1.0 Let's enjoy the wireless life All rights reserved by Shenzhen Neoway Technology Co., Ltd.
- Page 2 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...
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Page 3: Revision History
WM620 Hardware User Guide V1.1 Revision History Document Version Date Content Revised First issue V1.0 201309 V1.1 Add UART description 201310 All rights reserved by Shenzhen Neoway Technology Co., Ltd. -
Page 4: Table Of Contents
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 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 1... -
Page 5: Features And Description
EVDO and TD-SCDMA modules in the same package are pin to pin compatible to WM620, are provided by Neoway for customers to meet more 3G applications easily. WM620 is SMT module in LCC compact package. It can be easily adapted to standard Mini PCI-E Interface. - Page 6 WCDMA PS: UL 384kbps / DL 384kbps HSDPA: DL 3.6Mbps / UL 384kbps Support CSD Circuit Switched Data Support USSD Call Transfer (CFB, CFNA, CFU) Supplementary Service Call Waiting Three-Way Calling All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 3...
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Page 7: Pin Assignment And Description
Input range from 3.3 to interface 5.25 V. V_USB USB Power input Needs a 4.7uF decoupling MLCC Cap to GND Main battery power Power VBAT input Reset RESET_N VDD_1.8V Reset input All rights reserved by Shenzhen Neoway Technology Co., Ltd. - Page 8 DVDD; approximately+2.8 V Indicator Range Coin cell backup Light VRTC 1.5~3.25VDC,Typical voltage input 3.0VDC Signal show SIG_LED VDD_2.6V LIGHT Input Range：0~2.2V 12bit ADC input RING VDD_2.6V Call and SMS All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 1...
- Page 9 High-speed UART (allow input 3V) VDD_2.6V receive data input High-speed UART VDD_2.6V transmit data output Reserved Reserved Reserved Reserved Sleep control pin SLEEP_IN VDD_1.8V input Reserved All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 2...
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Page 10: Applicable Interface
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 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 3... - Page 11 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 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 4...
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Page 12: Vrtc Interface
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. All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 5... -
Page 13: Power Supply Output
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. All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 6... -
Page 14: Reset_N
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. All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 7... -
Page 15: Ring
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 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 8... -
Page 16: Sim Card
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. All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 9... -
Page 17: Usb Interface
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. All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 10... -
Page 18: Uart
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. All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 11... - Page 19 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. All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 12...
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Page 20: Audio Interface
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 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 13... -
Page 21: Mechanics, Mounting And Packaging
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. All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 14... -
Page 22: Packaging And Solder
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》. -
Page 23: Typical Application Sch
WM620 Hardware User Guide V1.1 4 Typical Application SCH All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 16... -
Page 24: Abbreviations
Global Standard for Mobile Communications 全球移动通讯系统 Half Rate 半速率 Integrated Circuit 集成电路 IMEI International Mobile Equipment Identity 国际移动设备标识 Liquid Crystal Display 液晶显示器 Light Emitting Diode 发光二极管 Mobile Station 移动台 Printed Circuit Board 印刷电路板 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 17... - Page 25 Short Message Service 短消息服务 SRAM Static Random Access Memory 静态随机访问存储器 Terminal adapter 终端适配器 TDMA Time Division Multiple Access 时分多址 UART Universal asynchronous receiver-transmitter 通用异步接收/发送器 VSWR Voltage Standing Wave Ratio 电压驻波比 All rights reserved by Shenzhen Neoway Technology Co., Ltd. Page 18...
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