RAK425 Data sheet RAK425 WIFI Module Shenzhen Rakwireless Technology Co.,Ltd www.rakwireless.com Mailinfo@rakwireless.com RAK425 Data sheet Content RAK425 UART WIFI Module....................................................................................................1 Content.................................................................................................................................................2 1 Overview.......................................................................................................................................... 1 1.1 Module Overview..................................................................................................................1 1.2 Key Application.....................................................................................................................1 1.3 Device Features..................................................................................................................... 1 2 Functional Description..................................................................................................................... 3 2.1 HW Interface......................................................................................................................... 3 2.2 Wireless Driver......................................................................................................................3 2.3 TCP/IP................................................................................................................................... 3 2.4 Power Consumption.............................................................................................................. 3 3 Hardware Introduction..................................................................................................................... 4 3. 1 Module type..........................................................................................................................4 3.2 Pin Definition........................................................................................................................ 5 3.3 Design Reference.................................................................................................................. 6 3.4 RAK425 PCBMechanical Size............................................................................................. 7 3.5 Reflow Soldering Temperature Graph.................................................................................. 7 3.6 Baking Instructions............................................................................................................... 8 4 Electrical Characteristics..................................................................................................................9 4.1 Absolute Maximum...............................................................................................................9 4.2 Recommended Operating Parameters...................................................................................9 4.3 RF Electrical Characteristics...............................................................................................10 RAK425 Data sheet 4.4 MCU Reset..........................................................................................................................11 5 Order Information...........................................................................................................................12 5.1 Products............................................................................................................................... 12 5.2 Description.......................................................................................................................... 12 5.3 Size...................................................................................................................................... 12 6 Sales and Service............................................................................................................................14 7 Revision History.............................................................................................................................15 RAK425 Data sheet 1 Overview 1.1 Module Overview RAK425 module is a Wi-Fi module that fully compliant with IEEE 802.11b/g/n wireless standards, with internally integrated TCP / IP protocol stack, supporting numerous protocols such as ARP, IP, ICMP, TCP, UDP, DHCP CLIENT, DHCP SERVER, DNS and other etc. It supports AP mode, Station mode and Ad-hoc and mode. Users can easily and quickly use it to networking and data transmission. The baud rate of module serial port is up to 921600bps, which can fully meet the low-rate applications. RAK425 supports storing parameters, and by the customer commands it determines whether to enable automatic networking to realize easy networking and reduce time for system to networking. The module has built-in WEB server, supporting wireless network parameters configuration, supporting wireless firmware upgrade. It also supports WPS and EasyConfig one-key networking, significantly reducing software development effort. RAK425 has four power management modes, among which the minimum standby power consumption is <2uA, fully meet customers requirement for low power design. 1.2 Key Application Portable products Home appliances and electrical appliances Industrial sensors Sales terminals Buildings automation Logistics and freight management 1.3 Device Features Home security and automation Medical applications, such as patient monitoring, medical diagnostics Metering (stop timing, measuring instruments, meters, etc.) Support IEEE 802.11b/g/n wireless standards Support UART communication with data flow control, with the maximum baud rate of 921600bps Minimalist hardware peripheral circuit design 1 RAK425 Data sheet Support Station, Ad-hoc and AP modes Support DHCP SERVER / DHCPCLIENT Support OPEN, WEP, WPA-PSK, WPA2-PSK and WPS encryption Support TCP, UDP protocols, with maximum 8 UDP/TCP connections Support webpage-based parameter configuration Support WPS and EasyConfig one-key to network connection Support parameter storage, customer orders loading after boot Support parameters store in Deep Sleep State, with connection time as fastest as 300ms Support wireless upgrade firmware On-board ceramic antenna or U.FL antenna connector Operating voltage: 3.3V 4 kinds power working modes, with minimum power consumption as 1-2uA S mall package size: Length x width = 20.5mm 15.5mm
(curved needle height 6.4mmvertical needle height 8.7mm) FCC, RoHS and CE compliant 2 RAK425 Data sheet 2 Functional Description 2.1 HW Interface Baud rate: 9600~921600bps Interface actual throughput up to600kbps support hardware flow control, ensuring reliability of data transmission 2.2 Wireless Driver Compliant with IEEE 802.11b/g/n standards Support AP STA AD-Hoc Mode Support WEP, WPA/WPA2-PSK encryption Fast networking, allowing module to be added to network within 1 sec after power up Support WPS and EasyConfig one-key to network connection Support wireless configuration and firmware upgrade 2.3 TCP/IP DHCP Client and Server features DNS Client and Server functions TCP Client, TCP Server, UDP Client, UDP Server and Multicast functions 8-way socket applications 2.4 Power Consumption The module supports four power consumption modes:
Full speed working mode, with approx 80mA average power consumption, peak current less than 200mA Power-saving mode, with approx 10mA average power consumption, peak current <200mA, DTIM = 100ms Deep sleep mode, with approx 5mA average power consumption, peak current <200mA, DTIM = 100ms (maximum support to 115200bps) Standby mode, with power consumption<2uA 3 RAK425 Data sheet 3 Hardware Introduction 3. 1 Module type Figure 3-5 RAK425 Top View Figure 3-6 RAK425 Bottom View 4 3.2 Pin Definition Pin Serial No. Name 1 2 3 4 5 6 7 8 9 GND VCC3V3 NC RESET NC RXD TXD RTS CTS 10 LINK OPU RAK425 Data sheet Table 3-7: Pin Definition Type Ground Power NC IPU NC O I I O Description connected to ground pad or the copper 3.3V power supply Remain disconnected when no use Module reset pin, low effective Remain disconnected when no use Serial data communication interface send Serial flow control pin, ready to receive, low effective Serial flow control pin, ready to receive, low effective Serial flow control pin, clear Send, low effective
"0" - STA connected in AP mode, Connected to router in STA mode
"1" - disconnected Remain disconnected when no use Note:
1. I - input O - output PU pulling up PD - pulling down NC - not connected 2. Pin in NC, remains disconnected Status indicator:
connected to router in STA mode, STA connected in AP modeon (output low)converselyoff EasyConfig, WPS is in one-key configurationquick flashing 5 RAK425 Data sheet 3.3 Design Reference Figure 3-8 Module Typical Design Reference 6 3.4 RAK425 PCBMechanical Size RAK425 Data sheet Figure 3-9 Module Pin Size (mm) 3.5 Reflow Soldering Temperature Graph Figure 3-10 Temperature Graph 7 RAK425 Data sheet Note:
As shown in Figure 3-8, it is based on the SAC305 lead-free tin paste (3% silver, 0.5%
copper). Alpha OM-338 lead-free cleaning-free flux is recommended. The Figure 6 is mainly used for guidance. The entire process time is subject to thermal pad number of assembly board and device Intensity. 3.6 Baking Instructions The RAK425 module is very sensitive to water. Be cautious to baking the device. At ambient conditions, it is required that within 168 hours removed from the vacuum packaging, the module should be processed with the circuit board assembly by reflow soldering; Or stored in the environment with a relative humidity below 10%. If the condition is not satisfied, the RAK425 must be processed with a 9-hour baking in the environment of 125 before the reflow soldering. 8 RAK425 Data sheet 4 Electrical Characteristics 4.1 Absolute Maximum The following table shows the absolute maximum. Note that the module device may be damaged when exceeds the maximum. To avoiddamages to the module and the device,please operate under specified conditions. Table 4-1: Parameters and Value Range Parameters External supply voltage Maximum RF Input (Reference: 50) Symbols VCC3V3 RFin Value
-0.3~4.0
+10 When voltage is 3.3V, IO Max voltage 3V3VinIOMax VCC+0.3 When voltage is 3.3V, IO Min voltage Storage ambient temperature ESD resistance 3V3VinIOMin Tstore ESDHBM
-0.3
-65~+135 2000 Unit V dBm V V V 4.2 Recommended Operating Parameters Table 4-2: Recommended Operating Parameter Range Parameters Symbols Min Value Typical Value Max Value External voltage Vcc Ambient temperature Tambient 3.14
-40 3.3
--
3.46
+85 Unit V 9 RAK425 Data sheet 4.3 RF Electrical Characteristics RF Transmit Specifications Table 4-3: Partial RF Transmit Specifications Symbol Ftx Pout Parameter Frequency range Output power 802.11b 802.11g 802.11n,HT20 Conditions Typical Value Unit
--
--
1Mbps 6Mbps MCS0 2.4
--
14.53 16.84 12.81 GHz
--
dBm dBm dBm RF Receiver Specifications Table 4-4: Partial Receiver Specifications Parameter Test conditions Typical Value Receiver sensitivity 11b,1Mbps 11b,2Mbps 11b,5.5Mbps 11b,11Mbps 11g,9Mbps 11g,18Mbps 11g,36Mbps 11g,54Mbps 11n,MCS1,13Mbps 11n,MCS3,26Mbps 11n,MCS5,52Mbps 11n,MCS7,65Mbps Maximum input CH7 11g,54Mbps signal Adjacent channel 6Mbps 54Mbps MCS0 MCS7 10
-97
-92
-90
-88
-91
-87
-81
-75
-89
-82
-75
-72 10 37 21 38 20 Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm dBm dBm dBm dBm dBc dBc dBc dBc RAK425 Data sheet 4.4 MCU Reset Figure 4-1 shows the MCU reset timing diagram and reset pulse length. When power on the module or an exception occurs, the module needs to be reset. RESET pin is internally pulled up, low input is effective. 3.3V IO Supply MCU_RESET TRESET Figure 4-1: MCU Reset Timing Table 4-5 shows the description of MCU reset parameters. Table 4-5: MCU Reset Parameter Symbol TRESET Description MCU reset pulse length typicalmS
>10 11 RAK425 Data sheet 5 Order Information 5.1 Products Table 5-1: Product Models Product Description RAK425AI-XXXX RAK425AL-XXXX RAK425AX-XXXX RAK425 BI-XXXX RAK425BL-XXXX RAK425 BX-XXXX UART interface module, with on-board antenna , use of the straight pin UART interface module, with on-board antenna , use of the bend pin UART interface module, with on-board antenna ,no pin UART interface module, with external antenna , use of the straight pin UART interface module, with external antenna, use of the bend pin UART interface module, with external antenna,no pin Single Tray Packing Minimum Package Development board corresponding model 50pcs/tray 500pcs RAK425AI_EVB 50pcs/tray 500pcs RAK425AL_EVB 50pcs/tray 500pcs RAK425AX_EVB 50pcs/tray 500pcs RAK425BI_EVB 50pcs/tray 500pcs RAK425BL_EVB 50pcs/tray 500pcs RAK425BX_EVB 5.2 Description 5.3 Size Packaging: Hard plastic pallets Weight: <=3.00g/pcs 12 RAK425 Data sheet Table 5-2: Thickness (Height) RAK425 Length * width Height Thickness (Height) 20.5mm15.5mm See the 3.2 module height 5.3 FCCCaution AnyChangesormodificationsnotexpresslyapprovedbythepartyresponsiblefor compliancecouldvoidtheusersauthoritytooperatetheequipment. Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothe followingtwoconditions:
(1)Thisdevicemaynotcauseharmfulinterference,and
(2)Thisdevicemustacceptanyinterferencereceived,includinginterferencethatmay causeundesiredoperation. Radiation Exposure Statement ThisequipmentcomplieswithFCCradiationexposurelimitssetforthforan uncontrolledenvironment.Thisequipmentshouldbeinstalledandoperatedwith minimumdistance20cmbetweentheradiator&yourbody. 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, product must be labeled in a visible area with the following Contains FCC ID: 2AF6B-RAKQMR003 the final end 13 RAK425 Data sheet 6 Sales and Service Beijing FAE mailbox: allan.jin@rakwireless.com Tel : 010-62716015 Fax: 010-62716015 Address: Room 1108, Jin Yanlong Building, Xisanqi Desheng Gate, Haidian District, Beijing Shanghai FAE mailbox: steven.tang@rakwireless.com Tel : 021-54721182 Fax: 021-54721038 Address: Room 306, Ran East Business Center 1 Building, No.150, 2161 Lane, Wanyuan road, Minhang District, Shanghai Shenzhen FAE mailbox: vincent.wu@rakwireless.com Tel : 0755-26506594 Fax : 0755-86152201 Address: RM1007,Hangsheng Technology Building,4th South Gaoxing Avenue, Science and Technology Park,Nanshan District,Shenzhen,China 14 RAK425 Data sheet 7 Revision History Version V1.0 V1.1 V1.2 V1.3 V1.4 V1.5 Modifications Initial Draft Document modification, version release Modified PCB pin diagram Update the contact way,Update the document format Update the Physical picture,Update the Order Information Modify some non-standard phrases intervals. Date 2014-02-08 2014-03-28 2014-04-06 2014-08-22 2014-08-28 2015-04-15 15