MXCHIP Information Technology EMW3280 Wi-Fi Module User Manual DS0001E EMW3280 V2
Shanghai MXCHIP Information Technology Co.,Ltd. Wi-Fi Module DS0001E EMW3280 V2
P53-EMW3280_User Manual
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| Document ID | 1815417 |
| Application ID | lKWpJ46p2Nchk9iwv6Q/WQ== |
| Document Description | P53-EMW3280_User Manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 258kB (3225003 bits) |
| Date Submitted | 2012-10-16 00:00:00 |
| Date Available | 2012-10-17 00:00:00 |
| Creation Date | 2012-08-08 08:17:44 |
| Producing Software | Mac OS X 10.8 Quartz PDFContext |
| Document Lastmod | 2012-10-08 10:17:16 |
| Document Title | DS0001E_EMW3280_V2 |
| Document Creator | Pages |
| Document Author: | William Xu |
EMW3280 Wi-Fi module Data Sheet EMW3280 UART/Wi-Fi high speed data transceiver 2.0 Date：2012-8-8 Data sheet Overview Applications EMW3280 Wi-Fi modules developed by MXCHIP integrate the TCP/IP protocol, IEEE 802.11b/g MAC and PHY. Wireless network function can be deployed on user's products easily. EMW3280 will save your development time and greatly improve your product’s competitiveness. Building Automation / Access Control Intelligent home appliances Medical/Health Care Industrial Automation Systems Point Of Sale system (POS) Auto electronics This product line is used to convert data between UART and WLAN and support all of the IEEE 802.11i security modes. Communicate with smart phones and Products List EMW Generation Function Interface - EMW Embedded Wi-Fi 3 Module 2 3rd(2012) 8 Full function 0 UART Package 2 2.0mm lead pitch pins PRODUC T BR IEF 2.0mm LGA PRODUC T BR IEF GS1011 Ultra Low-Power Wireless Single Chip PRODUCT OVERVIEW GS1011 device is a highly integrated ultra low power wireless single chip which 802.11i/WPA2 Authentication, AES contains an 802.11 radio, media access controller (MAC) and baseband processor, Hardware encryption on-chip flash memory and SRAM, and an applications processor all on a single Ultra Low-Power Wireless Single Chip Enterprise level security &reliability for package. The GS1011 supports the full 802.11b (11Mbps) data rates providing sensor networks scalability on PRODUCT data throughput for higher bandwidth application while still providing OVERVIEW Power Management the ultra low power consumption for years of battery life. The GS1011 is pin and Optimized for battery powered application GS1011with device a highlyenabling integrated ultra lowhardware power wireless package compatible the isGS1010 seamless upgradesingle for chip which with very low802.11i/WPA2 power consumption for Authentication, AES contains 802.11 radio, media access controller andscalable, baseband processor, current designs. Alongan with its embedded software stack it offers(MAC) a highly multiple years of battery encryption life Hardware on-chip flash memorywireless and SRAM, andmeet an applications all on a single reliable, manageable and secure link to the growingprocessor demand of Enterprise level security &reliability for Location Awareness package. Theutilizing GS1011thesupports full 802.11b (11Mbps) data rates providing wireless sensor networks broadly the accepted IEEE 802.11 standards sensor Enables users to trace networks and monitor assets on data throughput higher energy, bandwidth application while still providing infrastructure.scalability This solution is ideal for use for in smart building automation, Power Management Multiple I/O: SPI, UART, PWM, I2C, ultra low automation power consumption yearsmonitoring of battery applications. life. The GS1011 industrial andthe commercial and cold for storage In is pin and Optimized for battery powered application ADC, packageprovides compatible with thesuch GS1010 enabling seamlesswhich hardware for GPIO addition, the solution capabilities as location awareness also upgrade with very low power consumption for Provides flexibility in system design for designs. Along its embedded software stack it offersasset a highly scalable, make it well current suited for logistics andwith supply chain applications for tracking multiple years of battery life reliable, manageable and secure wireless link to meet the growing demand easier of integration location and status. Location Awareness Firmware, Device drivers, Reference wireless sensor networks utilizing the broadly accepted IEEE 802.11 standards Enables users to trace and monitor assets FEATURES &infrastructure. BENEFITS This solution is ideal for use in smart energy, building automation, Application SW, APIs, and SDK Multiple I/O: SPI, UART, Reduces customer development time for PWM, I2C, industrialwireless and commercial automation and MAC cold storage monitoring applications. In Highly Integrated SOC with 802.11 radio, and Baseband, application software enabling faster time to ADC, GPIO the solution provides capabilities such as location awareness which also Integratedaddition, PA, Application CPU, RTC, SRAM and FLASH GS1011 EMW Wi-Fi module hardware block UART SPI/I2S I2C Application SW, APIs, and SDK Lowers customer’s total cost of ownership (TCO) in network implementation and replacement onto current customer development time for Highly Integrated wireless SOC with 802.11 radio, MAC and Baseband, makes it drop inReduces management GS1010 designs application software enabling faster time to Seamlessly integrates with existing 802.11b/gCPU, infrastructure and utilizes the 802.11 Integrated PA, Application RTC, SRAM and FLASH market security, manageability, and quality of Feroceon service Reduceseaseof-use, system cost128MHz of implementing separate devices and lowers design complexity 120MHz CortexM Seamless HW upgrade to current Supports full 802.11b data form-factor rates (up toreduces 11 Mbps) for higher Ultra small board space bandwidth applications MCU CPU Supports IEEE 802.11 1Mbytes DAC Baseband Network 2x SPI SPI UART 2x UART GS1011 BLOCK DIAGRAM ADC 2x ADC Timer/PWM SRAM 128KB 32x GPIO 2x SPI 2x UART PWM GPIO 2x ADC Power 2x Alarm I2C Mangement 2x External Wake Up 3x PWM 32x GPIO 3.3V 2x Input Alarm 2x External Wake Up Processor ARM7 CPU 2.4GHz Flash Transceiver 256KB SPI I2C I2C 3x PWM GPIO 1.8V regulator Lowers customer’s total cost of ownership (TCO) in network implementation and management GS1011 BLOCK DIAGRAM Seamlessly integrates with existing 802.11b/g infrastructure and utilizes the 802.11 802.11 a/b/g/n security, manageability, easeof-use, and quality of service Flash Supports full 802.11b data rates (up to 11 Mbps) for higher bandwidth applications MAC & SDIO ADC market Provides flexibility in system design for Reduces system implementing separate devices andchain lowersapplications design complexity make it cost wellofsuited for logistics and supply for tracking asset Network WLAN easier integration to current 8MHz OSC Seamless HW upgrade Ultra small form-factor reduces board space location and status. Firmware, Device drivers, Reference designs Processor Subsystem Supports IEEE 802.11 FEATURES & BENEFITS Pin and package compatible with GS1010, RTC designs Pin and package compatible with GS1010, makes it drop in replacement onto current GS1010 designs Antenna WLAN On-board PCB Subsystem antenna External Power Amp Control 2.4 GHz (Optional) Transceiver RF Switch Antenna 44MHz XTAL WLAN Subsystem SRAM U.F.L connector 1.8 Regulator UART External Power Amp Control 128KB 2.4 GHz ARM7 CPU (Optional) ARM7 CPU Transceiver ADC DC-DC Control Standby Power Domain 802.11 32kHz XTAL RF Switch I2C Flash XTL NVRAM MAC & Battery (3.6V – 1.2V) 256KB OSC 512 Bytes 44MHz XTAL Baseband PWM GPIO 802.11 MAC & Network Baseband Processor SRAM 128KB ARM7 CPU Standby Power Domain RTC NVRAM 512 Bytes 1.8 V Regulator DC-DC Control XTL OSC 32kHz XTAL Battery (3.6V – 1.2V) MXCHIP CORPORATION Wireless M2M Division EMW3280 Wi-Fi module Features Fast, ease of use embedded system interface UART baudrate is up to 921600 Max. data transmission speed: 90kbytes/s (UART) Support UART hardware flow control which ensure reliable data transmission in high speed mode Simplified hardware connections Secure, stable Wi-Fi link Support AP chient mode, soft AP mode and Ad-hoc mode Secure, stable Wi-Fi link Auto recover from Wi-Fi’s disconnection Support WPA/WPA2 PSK, WEP encryption IPEX antenna connector, on board PCB antenna CE，FCC passed Embedded TCP/IP stack Support UDP protocol, broadcast and unicast Support TCP protocol, act as TCP server or client Allow 3 connections from TCP client under TCP server mode Auto reconnect after TCP link is lost Transfer data to internet through a gateway Support DNS service Flexible configuration and management Use EMSP commands to control and config module through UART Send EMSP commands from Wi-Fi network Configuration on build-in html pages Configuration software is provided on multiple platforms Designed for embedded systems Less than 220mA in running mode Less than 1mA in standby mode Less than 30mA in low power mode, network connection is maintained Time interval from reset to Wi-Fi connection is less than 2 seconds Reliable quality, comprehensive technical services Industrial temperature range: －40〜～80℃ Module test appliance is provided ROSH certification passed Evaluation boards, API library and test source codes are provided EMW3280 Wi-Fi module ⺫⽬目录 1. Function Description 1.1.Features RF features UART features TCP/IP features 1.2.Electrical Parameters 1.2.1.Absolute maximum ratings: Voltage & Current 1.2.2.Operating conditions: Voltage & Current 1.2.3.Digital I/O port characteristics Output voltage levels Output voltage levels NRST pin characteristics 1.2.4.Absolute maximum ratings: Temperature 1.2.5.Absolute maximum ratings: The Electromagnetic Environment Electrostatic discharge (ESD) 1.2.6.Static latch-up 1.2.7.RF characteristics 1.3.Mechanical Dimensions 1.3.1.Mechanical Dimensions Of EMW3280 (Metric units) 2. Module interface 10 2.1.Leds 10 2.2.Pinouts 10 2.3.Pin Arrangement 11 2.4.Typical Hardware Connection And Pin Description 11 3. Antenna 14 3.1.Minimizing radio interference 14 3.2.On-board Antenna Specification 14 3.3.U.F.L RF Connector 15 4. Lable 16 5. Recommended Reflow Profile 17 6. MSL/Storage Condition 17 7. Sales Information 18 EMW3280 Wi-Fi module 8. Technical Support 18 EMW3280 Wi-Fi module 1. Function Description EMW3280 Wi-Fi modules developed by MXCHIP integrate the TCP/IP protocol, IEEE 802.11b/g MAC and PHY. Wireless network function can be deployed on user's products easily. EMW3280 will save your development time and greatly improve your product’s competitiveness. EMW3280 modules can run in the industrial temperature rang: -40℃ to 85℃. The highest baudrate of UART interface is 921600. It has two transfer modes: TCP, UDP, and support EMSP commands to configure its parameters. 1.1. Features ★ Single operation voltage: 3.3V. ★ Power consumption: <220mA under run mode, current <1mA under standby mode. ★ CPU frequency: 120MHz，flash size: 1M bytes，RAM size128k bytes. ★ Two working modes: command mode and data transmission mode. ★ Complete Wi-Fi wireless communications solutions, to reduce the resource requirements of the application processor; ★ Multipul configuration methods: build-in web pages，EMW tool box(PC software) and EMSP commands； RF features ★ WLAN standard: IEEE 802.11b/g/n, Wi-Fi compatible. ★ RF frequency: 2.4G ISM. ★ Support AP chient mode, soft AP mode and Ad-hoc mode. ★ WEP40 and WEP104 encryption (64/128bit), support open system or shared key. ★ WPA/WPA2 PSK encryption, use AES or TKIP encryption algorithm. ★ Auto recover from Wi-Fi disconnection. ★ Time interval from reset to Wi-Fi connection is less than 2 seconds. UART features ★ UART Baudrate：1200－921600； ★ Highest transmission speed: 90kbytes/s(send or receive), 60kbytes/s(send & receive both). ★ upport UART hardware flow control that provide the reliable data transmission TCP/IP features ★ Support DNS service. ★ Support DHCP client and DHCP server. ★ Support network data transmission protocol: TCP, UDP； ★ TCP server or client. ★ Reliable TCP link management: Automatic reconnect when the connection was lost. ★ As a TCP server, allow 3 TCP connection from the clients. ★ UDP broadcast or unicast. EMW3280 Wi-Fi module 1.2. Electrical Parameters 1.2.1. Absolute maximum ratings: Voltage & Current Stresses above the absolute maximum ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. Symbol Ratings Min Max Unit VDD–VSS Voltage –0.3 4.0 VIN Input voltage on five volt tolerant pin VSS −0.3 5.5 VIN Input voltage on any other pin VSS −0.3 VDD+0.3 Symbol Ratings Max IVDD Total current into VDD power lines (source) 320 IVSS Total current out of VSS ground lines (sink) 320 Output current sunk by any I/O and control pin 25 Output current source by any I/Os and control pin -25 IIO 1.2.2. Unit mA Operating conditions: Voltage & Current Specification Symbol VDD Note Conditions Voltage Min. Typical Max. Unit 3.0 3.3 3.5 219 224 230 mA 199 202 204 mA 203 204 205 mA 199 200 202 mA 182 185 188 mA 50 60 uA VDD=3.3V, normal IVDD Current 2437 MHz，18 dBm， 11 Mbps CCK TX Speed：80kbytes/s VDD=3.3V, normal IVDD Current 2437 MHz，18 dBm， 11 Mbps CCK TX Speed：10kbytes/s VDD=3.3V, normal IVDD Current 2437 MHz，15 dBm， 54 Mbps OFDM TX Speed：80kbytes/s VDD=3.3V, normal IVDD Current 2437 MHz，15 dBm， 54 Mbps OFDM TX Speed：10kbytes/s IVDD Current VDD=3.3V，Receive mode IVDD Current VDD=3.3V，Sleep mode EMW3280 Wi-Fi module 1.2.3. Digital I/O port characteristics Output voltage levels Symbol Note VOL Parameter Conditions Output low level voltage IIO = +8 mA Min. VDD-0.4 VOL UART & IO Output high level voltage 2.7 V < VDD < 3.6 V output voltage Output low level voltage IIO = +20 mA VOH Output high level voltage 2.7 V < VDD < 3.6 V VDD-1.3 VOH Max. Unit 0.4 1.3 Output voltage levels Symbol Note Parameter VIL Conditions Input low level voltage Input high level voltage VIH UART & IO input voltage Min. Max. Unit -0.5 0.8 VDD+0.5 5.5 -0.5 0.35VDD 0.65VDD VDD+0.5 TTL level Input high level voltage (5V input tolerant) VIL Input low level voltage VIH Input high level voltage CMOS level NRST pin characteristics The NRST pin input driver uses CMOS technology. EMW3280 contains RC(resistancecapacitance) reset circuit which ensures the module reset accurately when it powers up. If you need to reset manually, just connect the external control signals to the reset pins directly. Additional, you can also control the reset by means of the EMSP command. Symbol Item VIL(NRST) /RESET input low level –0.5 0.8 VIH(NRST) /RESET input high level VDD+0.5 RPU Resistor for Pulling up CPD Capacitor for charging and Resetting 1.2.4. 1.2.5. Conditions VIN = VSS Min. 7.5 Typical Max. Unit 8.3 kΩ 100 1000 pF Absolute maximum ratings: Temperature Symbol Ratings Max Unit TSTG Storage temperature –55 to +125 ℃ TA Working temperature -40 to +85 ℃ Absolute maximum ratings: The Electromagnetic Environment Electrostatic discharge (ESD) Symbol Ratings Conditions Class Max VESD(HBM) Electrostatic discharge voltage (human body model) TA = +25 °C conforming to JESD22-A114 2000 Unit EMW3280 Wi-Fi module 1.2.6. Symbol Ratings Conditions Class Max VESD(CDM) Electrostatic discharge voltage (charge device model) TA = +25 °C conforming to JESD22-C101 II 500 Unit Static latch-up These tests are compliant with EIA/JESD 78A IC latch-up standard. Symbol Parameter Class Class LU Static latch-up class TA = +105 °C conforming to JESD78A II level A EMW3280 Wi-Fi module 1.2.7. RF characteristics Basic characteristics Item Specification Operating Frequency 2.412~2.472GHz WiFi Standard 802.11b/g/n(1x1)＊ Modulation Type Data Rates Antenna type 11b: DBPSK, DQPSK,CCK for DSSS 11g: BPSK, QPSK, 16QAM, 64QAM for OFDM 11n: MCS0~7,OFDM＊ 11b:1, 2, 5.5 and 11Mbps 11g:6, 9, 12, 18, 24, 36, 48 and 54 Mbps 11n: MCS0~7, up to 150Mbps One U.F.L connector for external antenna PCB printed ANT (Reserve) IEEE802.11b mode Item Specification Modulation Type DSSS / CCK Frequency range 2400MHz~2483.5MHz Channel CH1 to CH13 Data rate 1, 2, 5.5, 11Mbps TX Characteristics Min. Typical 16 18 Max. Unit Transmitter Output Power 11b Target Power < 25 dBm Spectrum Mask @ target power fc +/-11MHz to +/-22MHz -30 dBr fc > +/-22MHz -50 dBr ＋25 ppm Frequency Error -25 -1 Constellation Error( peak EVM)@ target power 1~11Mbps 35% RX Characteristics Min. Typical Max. Unit 1Mbps (FER≦8%) -97 -83 dBm 2Mbps (FER≦8%) -93 -80 dBm 5.5Mbps (FER≦8%) -91 -79 dBm 11Mbps (FER≦8%) -89 -76 dBm Minimum Input Level Sensitivity Maximum Input Level (FER≦8%) -10 dBm EMW3280 Wi-Fi module IEEE802.11g mode Item Specification Modulation Type OFDM Frequency range 2400MHz~2483.5MHz Channel CH1 to CH13 Data rate 6, 9, 12, 18, 24, 36, 48, 54Mbps TX Characteristics Min. Typical Max. Unit 13 15 < 25 dBm fc +/-11MHz -20 dBr fc +/-20MHz -28 dBr fc > +/-30MHz -40 dBr ＋25 ppm 6Mbps -5 dBm 9Mbps -8 dBm 12Mbps -10 dBm 18Mbps -13 dBm 24Mbps -16 dBm 36Mbps -19 dBm 48Mbps -22 dBm -30 -25 dBm Typical Max. Unit 6Mbps (FER≦10%) -90 -82 dBm 9Mbps (FER≦10%) -88 -87 dBm 12Mbps (FER≦10%) -86 -79 dBm 18Mbps (FER≦10%) -85 -77 dBm 24Mbps (FER≦10%) -82 -74 dBm 36Mbps (FER≦10%) -79 -70 dBm 48Mbps (FER≦10%) -75 -66 dBm 54Mbps (FER≦10%) -72 -65 dBm Transmitter Output Power 11g Target Power Spectrum Mask @ target power Frequency Error -25 -1.1 Constellation Error( peak EVM)@ target power 54Mbps RX Characteristics Min. Minimum Input Level Sensitivity Maximum Input Level (FER≦10%) -20 dBm EMW3280 Wi-Fi module IEEE802.11n 20MHz bandwidth mode Item Specification Modulation Type MIMO-OFDM Channel CH1 to CH13 Data rate MCS0/1/2/3/4/5/6/7 TX Characteristics Min. Typical Max. Unit 13 15 < 25 dBm fc +/-11MHz -20 dBr fc +/-20MHz -28 dBr fc > +/-30MHz -45 dBr ＋25 ppm MCS0 -5 dBm MCS1 -10 dBm MCS2 -13 dBm MCS3 -16 dBm MCS4 -19 dBm MCS5 -22 dBm MCS6 -25 dBm -32 -28 dBm Typical Max. Unit MCS0 (FER≦10%) -89 -82 dBm MCS1 (FER≦10%) -86 -79 dBm MCS2 (FER≦10%) -84 -77 dBm MCS3 (FER≦10%) -82 -74 dBm MCS4 (FER≦10%) -78 -70 dBm MCS5 (FER≦10%) -74 -66 dBm MCS6 (FER≦10%) -72 -65 dBm MCS7 (FER≦10%) -69 -64 dBm Transmitter Output Power 11n HT20 Target Power Spectrum Mask @ target power Frequency Error -25 -1.2 Constellation Error( peak EVM)@ target power MCS7 RX Characteristics Min. Minimum Input Level Sensitivity Maximum Input Level (FER≦10%) -20 dBm EMW3280 Wi-Fi module IEEE802.11n 40MHz bandwidth mode Item Specification Modulation Type MIMO-OFDM Channel CH3 to CH11 Data rate MCS0/1/2/3/4/5/6/7 TX Characteristics Min. Typical Max. Unit 12 14 < 25 dBm fc +/-22MHz -20 dBr fc +/-40MHz -28 dBr fc > +/-60MHz -45 dBr ＋25 ppm MCS0 -5 dBm MCS1 -10 dBm MCS2 -13 dBm MCS3 -16 dBm MCS4 -19 dBm MCS5 -22 dBm MCS6 -25 dBm -31 -28 dBm Typical Max. Unit MCS0 (FER≦10%) -87 -79 dBm MCS1 (FER≦10%) -84 -76 dBm MCS2 (FER≦10%) -81 -74 dBm MCS3 (FER≦10%) -79 -71 dBm MCS4 (FER≦10%) -75 -67 dBm MCS5 (FER≦10%) -71 -63 dBm MCS6 (FER≦10%) -69 -62 dBm MCS7 (FER≦10%) -66 -61 dBm Transmitter Output Power 11n HT20 Target Power Spectrum Mask @ target power Frequency Error -25 -1.3 Constellation Error( peak EVM)@ target power MCS7 RX Characteristics Min. Minimum Input Level Sensitivity Maximum Input Level (FER≦10%) -20 dBm EMW3280 Wi-Fi module 1.3. Mechanical Dimensions 1.3.1. Mechanical Dimensions Of EMW3280 (Metric units) Figure 1.1 EMW3280 top view Figure 1.2 EMW3280 side view Figure 1.3 EMW3280 bottom view EMW3280 Wi-Fi module 2. Module interface 2.1. Leds D1 D2 Table 2.1 LED functions Name Color Description On: Initialize successful, working in normal D1 D2 Green Red Off：Initialize failed, or standby mode Flashing (Short/short/short): Firmware update mode Flashing (Short/long/short): Illegal firmware version Flashing: Data transmission (test failed in MFG mode) On：Wi-Fi is connected Off：Wi-Fi disconnected 2.2. Pinouts EMW3280has two groups of pins (1X15 +1X15). The lead pitch is 2mm. EMW3280’s pinout is shown in the Figure 2.1. Table 2.2 lists the pin functions. Figure2.1 EMW3280: appearance and pinout 10 EMW3280 Wi-Fi module 2.3. Pin Arrangement Figure 2.2 EMW3280 pin arrangement 2.4. Pins Pin Name 1-14 FT Pins Pin Name NC 22 UART_TXD(OUT) 15 GND 23 UART_RXD(IN) 16 nWI-FI LED(OUT) BOOT(IN) 24 VDD 17 nRESET(IN) 25 GND 18 IO1 26-28 NC 19 NC 29 nWAKE_UP(IN） 20 nUART_RTS(OUT) 30 STATUS(IN) 21 nUART_CTS(IN) FT √ √ √ Typical Hardware Connection And Pin Description EMW3280 consume more power in data transmission. It is recommended that the VDD power supply is connected in parallel with a 330uF/5V solid capacitor, or a high-frequency electrolytic capacitor (low ESR), this can reduce the requirements of DC power supply, A 300mA LDO can be used (500mA LDO is recommended). Host Device VDD 3.3V UART_RXD TX UART TX nCTS nUART_RTS Optional RX UART RX nRTS IO1 IO2 IO circult IO3 IO4 WI-Fi Module UART RX UART_TXD nUART_CTS Optional UART TX nRESET Optional STATUS Optional WAKEUP Optional IO circult FC(IO1) Optional nWIFI LED/BOOT Optional 1K 3.3V GND Figure 2.3 Typical hardware connection: TTL/CMOS UART Interface 11 EMW3280 Wi-Fi module 3.3V 16 Vcc V+ C1+ C1- MAX3232 4 C2+ Host Device RS232 TX V- C2- VDD 3.3V TX 13 R1IN nCTS 14 T1OUT R1OUT 12 UART_RXD T1IN 11 nUART_RTS WI-Fi Module RX circult Optional RS232 RX RX nRTS 8 R2IN T2IN 10 UART_TXD R2OUT 9 nUART_CTS T2OUT TX circult Optional IO1 IO circult nRESET Optional IO2 STATUS Optional IO3 IO3 IO circult WAKEUP Optional FC(IO1) Optional nWIFI LED/BOOT Optional 1K 3.3V GND Figure 2.4 Typical hardware connection: RS232 UART Interface 3.3V VCC Host Device 3.3V VDD WI-Fi Module MAX3485 DI TX circult DE RS485 RE RX circult RO HDC(IO1) IO1 IO circult IO2 IO3 nRESET Optional STATUS Optional IO circult WAKEUP Optional nWIFI LED/BOOT Optional 1K 3.3V GND Figure 2.5 Typical hardware connection: RS485 UART Interface 12 EMW3280 Wi-Fi module Table 2.3 Pin functions Pin Type Function VDD Power input. GND Grounding. UART_RXD I, FT UART_TXD nUART_CTS I, FT nUART_RTS STATUS(IN) I, FT, PU Set the operation mode, cooperation with BOOT pin: WAKE_UP(IN) I, PU • Pull down: Enter standby mode • Pull up: Wake up from standby mode nRESET(IN) I, PU Pull down this pin for 1μs to reboot. UART Data input. UART Data output. UART allow to send, active low. UART is ready to receive, active low. This pin has two functions: nWI-FI LED(OUT) O/I, PU nWIFI_LED：Output led D1 status, Low: D1 = on, High: D1 = off. BOOT(IN) BOOT：Enter different operation modes when powered on or reset. NC IO1 can be configured by software Set to Frame Control mode (FC), used in DTU mode: Input low, EMW3280 store the received UART data in RAM. Input high, EMW3280 send the buffed UART data over Wi-Fi network. Refer document: RM0001_EMW3280 for details Set to Half-duplex Control mode (HDC), used in DTU mode: Output low, while receiving UART data Output high, while sending UART data IO1 NC Undefined IOs. Leave them floating or grounding. 1. FT: = 5V input tolerant. 2. PU: The pin is at high level if no external signal is asserted. 3. PD: The pin is at low level if no external signal is asserted. 4. UART signals include: UART_TXD，UART_RXD，nUART_RTS和nUART_CTS. 5. Only VDD, GND UART_TXD and UART_RXD are needed in a simple connection. 6. We strong recommend that using STATUS signal to switch EMW3X80’s operation mode. 7. nRESET should not be forced pulled up by external circuit, otherwise standby mode and internal watchdog would be unable to work properly. If an external signal is connected to nRESET, this signal must be Open Drain Mode (OD). 8. Use BOOT pin and STATUS pin to define different working mode. BOOT STATUS EMW3280 operation mode MFG mode 1 (Default) FW UPDATE mode 1 (Default) Command mode (working mode) 1 (Default) 1 (Default) DTU mode (working mode) 13 EMW3280 Wi-Fi module 3. Antenna There is co-layout design (C35&C32) for antenna connection. Normally, load the capacitor c35(10pF/0201) , it means can use U.F.L RF connector for external antenna. If want to use onboard PCB printed antenna, just need load the capacitor from C35 to C32. In order to get the maximum performance, strongly suggest customer use external antenna connected with U.F.L RF connector. 3.1. Minimizing radio interference When integrating the WiFi module with on board PCB printed antenna, make sure the area around the antenna end the module protrudes at least 15mm from the mother board PCB and any metal enclosure. If this is not possible use the on board U.FL connector to route to an external antenna. The area (6.5mmx17.3mm) under the antenna end of the module should be keep clear of metallic components, connectors, vias, traces and other materials that can interfere with the radio signal. 3.2. On-board Antenna Specification Operating Frequency 2.412~2.472GHz VSWR (max) <=2.5:1 Peak Gain ~2.1dBi Antenna Type PCB printed PiFA antenna 14 EMW3280 Wi-Fi module 3.3. U.F.L RF Connector This module use U.F.L type RF connector for external antenna connection. 15 EMW3280 Wi-Fi module 4. Lable Label’s position is as follow： FCC ID:XXXXXXXXXXXXXXXXX MO-VVSS XXXXXXXXXXXX -EMW3280 -XXX FCC ID:XXXXXXXXXXXXXXXXX MO-VVSS XXXXXXXXXXXX -EMW3280 -XXX A：CE logo B：FCC ID C：Two-dimensional code，XXXXXXXXXXXX－EMW3280－XXX，same mean as part E D：Internal production mark E：XXXXXXXXXXXX 12 digitals, EMW3280 MAC address EMW3280: Model XXX : Production date F：MXCHIP logo 16 EMW3280 Wi-Fi module 5. Recommended Reflow Profile Reflow times<= 2times (Max.) 6. MSL/Storage Condition 17 EMW3280 Wi-Fi module 7. Sales Information To buy this product, please call MXCHIP \during the working hours. (Monday~Friday A.M. 9:00~12:00; P.M. 1:00~6:00) Telephone: +86-21-52655026 / 52655025 Address: Floor 2, Building No.9, Lane 271, Qianyang Street, Putuo District, Shanghai Post Code: 200333 Email： sales@mxchip.com 8. Technical Support To get technical support or other information, please visit http://www.mxchip.com To get telephone technical support, please call us during the working hours: MCUs +86 (021)52655026-822 Email：support@mxchip.com Embedded wireless devices +86 (021)58655026-812 Email：support@mxchip.com Development tools +86 (021) 52655026-822 Emali：support@mxchip.com Information for the OEM Integrators This device is intended for OEM integrators only. Please see the full grant of equipment document for restrictions. Label Information to the End User by the OEM or Integrators If the FCC ID of this module is not visible when it is installed inside another device, then the outside of the device into which the module is installed must be label with "Contains FCC ID: P53-EMW3280". 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. To satisfy FCC RF exposure requirements, a separation distance of 20 cm or more should be maintained between the antenna of this device and persons during device operation. To ensure compliance, operations at closer than this distance is not recommended. Limited by local law regulations, version for North America does not have region selection option. 18
Source Exif Data:
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