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USR-C321

Low Power

Minisize

WiFi Module User Manual

www.usr.so

4

4

4

4

/

41

41

41

41

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Single 3.3 V power supply

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Ultra low power mode, support deep dormancy

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Support Internal/External(I-PEX) Antenna Option

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Minisize:18.22mm*26.65mm*2.8mm SMT

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FCC/CE Certificated

1.3

1.3

1.3

1.3 Product

Product

Product

Product Feature

Feature

Feature

Feature

Module parameters

classify

parameter

value

Wireless Para

meter

Certification

FCC/CE

Wlan Standard

802.11 b/g/n

Transmit Power

17.0 dBm @ 1 DSSS

17.25 dBm @ 11 CCK

13.5 dBm @ 54 OFDM

Receive

Sensitivity

–94.7 dBm @ 1 DSSS

–87.0 dBm @ 11 DSSS

–73.0 dBm @ 54 OFDM

Antenna

External:I-PEX

Internal:On-board antenna

Hardware

Data Interface

UART 300-3M bps

Working Voltage

3.0V~3.6V

Working Current

（

voltage 3.3 V

）

Continue to send:~75mA

normal mode:average: ~18mA

，

top: 200mA

In the web:3.5mA

Standby:lowest 25uA

Working

Temperature

-40

℃

- 85

℃

Storage

Temperature

-45

℃

- 125

℃

Size

18.22mm*26.65mm*2.8mm

Footprint

SMT

Software

Wireless

Network Type

AP/STA

Security Regime

WEP/WPA-PSK/WPA2-PSK

Encryption Type

TKIP,AES,TKIP/AES

Networking

Protocol

IPv4, TCP/UDP

User

Configuration

AT+ instruction set

Web

Содержание USR-C321

Страница 1: ...4 kernel running frequency of 80 MHZ Fully integrated serial port turn wireless TCP UDP transmission function the rate of serial port up to 3M bps Support 485 Control Search in local area network LAN and wireless parameters setting function Support TCP UDP Client registered packet mechanism Support Simplelink usrlink Networking configuration Support custom web function Support similar RFC2217 auto...

Страница 2: ...tom Custom Custom Custom web web web web function function function function 14 14 14 14 3 5 3 5 3 5 3 5 Search Search Search Search in in in in local local local local area area area area network network network network 14 14 14 14 3 6 3 6 3 6 3 6 TCP UDP TCP UDP TCP UDP TCP UDP Client Client Client Client Registration Registration Registration Registration Packet Packet Packet Packet Mechanism M...

Страница 3: ...le choices Module size 18 22 mm 26 65 mm 2 8 mm SMT assembly The basic function of the module is described below Can work in AP mode for other WIFI devices access communication can also work in the STA mode access to the wireless router to realize communication With a Socket communication links can be set to the TCP Server TCP Client and UDP Server UDP Client communication The Socket in the TCP Se...

Страница 4: ...ansmit Power 17 0 dBm 1 DSSS 17 25 dBm 11 CCK 13 5 dBm 54 OFDM Receive Sensitivity 94 7 dBm 1 DSSS 87 0 dBm 11 DSSS 73 0 dBm 54 OFDM Antenna External I PEX Internal On board antenna Hardware Data Interface UART 300 3M bps Working Voltage 3 0V 3 6V Working Current voltage 3 3 V Continue to send 75mA normal mode average 18mA top 200mA In the web 3 5mA Standby lowest 25uA Working Temperature 40 85 St...

Страница 5: ... 4 Application Application Application Application Area Area Area Area Cloud Connected Home Automation Household Appliances Access Control Security and Protection System Smart Energy Industrial Control Intelligent Electrical Outlet Box Instrument Measurement IPNetwork Sensor Nodes Wireless Printer ...

Страница 6: ... Functional Description 1 GND GND 2 GPIO General GPIO 3 GPIO General GPIO 4 nReset Module reset pin low level effectively 5 SOP2 Start the choice see 2 4 2 4 2 4 2 4 The The The The Hardware Hardware Hardware Hardware Circuit Circuit Circuit Circuit Design Design Design Design Reference Reference Reference Reference 6 SOP1 default NC 7 SOP0 default NC 8 ANA DC DC The RF power output pin hung up 9 ...

Страница 7: ...LED 23 nLink WiFi link pin of module low effective connect an external LED 24 UART CTS A serial port flow control pin CTS 25 UART RTS A serial port flow control pin RTS 26 GPIO General GPIO 27 GPIO General GPIO 28 GND GND 29 GND GND 30 GPIO General GPIO 31 GPIO General GPIO 32 GPIO General GPIO 33 GPIO General GPIO 34 GPIO General GPIO 35 GPIO General GPIO 36 GPIO General GPIO 37 GPIO General GPIO...

Страница 8: ...yout Layout Layout Layout Recommendations Recommendations Recommendations Recommendations Advise PCB Footprint Cloth plate specification 1 Internal Antenna Customers to use the internal antenna the need to abide by the following considerations and internal antenna module placed general rules On the user s PCB and grey shaded area above the corresponding area cannot be ...

Страница 9: ...rding to the requirement of the IEEE802 11 b g n standard need to connect the 2 4 g external antenna External antenna using IPEX interface The parameters of the external antenna requirements in the table below details item paramter frequency range 2 4 2 5GHz impedance 50 Ohm VSWR 2 Max Return Loss 10dB Max Connection Type IPEX 2 4 2 4 2 4 2 4 The The The The Hardware Hardware Hardware Hardware Cir...

Страница 10: ...USR C321 Low Power Minisize WiFi Module User Manual www usr so 10 10 10 10 41 41 41 41 ...

Страница 11: ...ransparent transmission mode has the advantage of UART interface and network communication of the plug and play which reduce the complexity of the user to a great extent Modules to work in a transparent transmission mode the users only need to configure the necessary parameters UART interface and network communication can be realized After power on module automatically connected to the wireless ne...

Страница 12: ...ireless module WIFI working mode the STA and AP can provide users with flexible network mode and the network topology method Nouns that AP The wireless access point is the center of a wireless network node Commonly used wireless router is an AP other wireless terminal can be interconnected by AP STA wireless site is a wireless network terminal Such as notebook computer PDA etc 3 2 1 3 2 1 3 2 1 3 ...

Страница 13: ...nication Communication The module has a TCP Socket When the module in translate mode to write the data of the UART interface module module will automatically send a Socket Module through the Socket received data send out through the UART interface Socket works include the TCP Server the TCP Client UDP Client and UDP Server please refer to the AT command set method in the AT SOCKA instruction set o...

Страница 14: ...h Search in in in in local local local local area area area area network network network network Module support within the local area network LAN search function that is when the module is connected to a wireless router the user can through to a fixed port sends UDP broadcast way to get the IP address of the module of the current in order to realize the search and communications equipment SEARCH t...

Страница 15: ...ism is as follows TCP Client There are two kinds of TCP Client registration mechanism 1 Just send a registration packet when the module is connected to the TCP Server module will send TCP Server MAC 6 bytes or ID 4 bytes Server by MAC or ID to distinguish between different devices 2 Every packet of data has registration information TCP Client after the link to the server a serial port receives eac...

Страница 16: ...5 SSID1 Unsized The SSID of router 1 6 separator 1 Separator of SSID1 fixed value 0x00 7 Signal strength1 1 Signal strength of router 1 0 100 0 100 8 separator 2 Separator of signal strength1 fixed value 0x0D 0x0A M SSID n Unsized The SSID of router n M 1 separator 1 Separator of SSID n fixed value 0x00 M 2 Signal strength 1 Signal strength of router n 0 100 0 100 M 3 separator 2 fixed value 0x0D ...

Страница 17: ...tes and check byte 3 cmd 1 Command type 0x02 4 reserve 1 fixed value 0x00 5 SSID Unsized SSID of router 6 separator 2 fixed value 0x0D 0x0A 7 password Unsized Password of router 8 check 1 Sum of bytes from head not contained byte to check byte not contained Response for Setting No Name Num of Bytes Description 1 head 1 fixed value 0xFF 2 length 2 Sum of data bytes from length bytes to check byte n...

Страница 18: ...ery module is connected password show SAFE password is not visible 3 3 3 3 9 9 9 9 RFC2217 RFC2217 RFC2217 RFC2217 Automatic Automatic Automatic Automatic Baud Baud Baud Baud Rate Rate Rate Rate Function Function Function Function 3 3 3 3 9 9 9 9 1 1 1 1 RFC2217 RFC2217 RFC2217 RFC2217 Functional Functional Functional Functional Description Description Description Description 1 RFC2217 is an insta...

Страница 19: ...tings does not data communication module into low power mode The user can choose different sleep mode 0 to 4 Ways there are to awaken the network side and serial port network side refers to establish the wifi connection to establish a socket connection with module and send data to the socket a serial port end points to a serial port to send data For example set up AT SLPTYPE 2 200 When the module ...

Страница 20: ...ower power consumption about 5 ma The corresponding mode 2 Mode Mode Mode Mode 3 3 3 3 LPDS LPDS LPDS LPDS Mode Mode Mode Mode Module into LPDS mode network part keep running module gpio port output is high impedance state Via a serial port or network packets wake up wake up after the restart operation module Corresponding mode 3 Mode Mode Mode Mode 4 4 4 4 Hibernate Hibernate Hibernate Hibernate ...

Страница 21: ...rial port to send data wake up module the module will be according to set the wifi TCP socket parameters the active link to the server translate data translate is completed according to set the time to sleep note note note note serial awakens the module in Lpds mode Hibernate mode practical for the RXD pin So must contain 0 8 bits of data namely the need to guarantee the RXD pin has a low level th...

Страница 22: ...b support switch in both Chinese and English can through the web page top right corner Chinese English switch also can through the at command set Then the web management page will appear Management page including system state and WiFi parameters translate parameters additional features account management return to restart Settings about someone 1 The System Status Page Mainly for the module operat...

Страница 23: ...et the IP DHCP can ban through input the IP subnet mask gateway and obtain a static IP restart to take effect Note Note Note Note when the network name and password does not support the double quotes comma and or greater than less than and other special characters 3 Trans Setting Peripherals parameters set mainly set serial port serial port baud rate can be set to 300 3000000 data bits can set 5 8...

Страница 24: ...iFi Module User Manual www usr so 24 24 24 24 41 41 41 41 Transparent transmission mode the socket protocol the server address and port 4 Extra Function Transparent transmission mode the socket protocol the server address and port ...

Страница 25: ...r Minisize WiFi Module User Manual www usr so 25 25 25 25 41 41 41 41 5 Account Set Account management can set the user name and password login page the length must be 5 bytes click save Settings restart to take effect ...

Страница 26: ...USR C321 Low Power Minisize WiFi Module User Manual www usr so 26 26 26 26 41 41 41 41 6 Reload Restar This page includes the module to the factory state and restart the module function ...

Страница 27: ...USR C321 Low Power Minisize WiFi Module User Manual www usr so 27 27 27 27 41 41 41 41 7 About USR This page is a simple introduction of Jinan USR IOT Technology Limited ...

Страница 28: ...r setting module Module of the default UART port parameters for 115200 baud rate no check 8 data bits one stop bit explain explain explain explain The AT command debugging tools UART interface is recommended to use SecureCRT software tools or some professional applications The following is introduced using UART communication and SecureCRT tool demo From translate mode switch to the command mode to...

Страница 29: ... CMD op para 1 para 2 para 3 para 4 AT CMD op para 1 para 2 para 3 para 4 AT CMD op para 1 para 2 para 3 para 4 CR CR CR CR AT Command messages prefix CMD Command string op Instruction operator is specified parameters to set or query parameter Settings NULL query para n Input parameter Settings such as query is not required CR end mark ENTER ASCII 0x0a or 0x0d NOTICE NOTICE NOTICE NOTICE If If If ...

Страница 30: ...ters 5 RELD Restore to factory default setting 6 MAC Read the MAC of module 7 SEARCH Set query LAN port and keyword search 8 MID Query module ID information 9 PLANG Web log in languages 10 WEBU Set query website login user name and password 11 VER Query The module firmware version 12 PING Network Ping command 13 WSCAN Scan AP Wifi Set 14 WMODE Set Query Wi Fi work mode AP STA 15 WSTA Set query ass...

Страница 31: ...AT E on off CR AT E on off CR AT E on off CR CR LF OK CR LF CR LF OK CR LF CR LF OK CR LF CR LF OK CR LF Parameters on Open the echo echo the AT command input command off the AT command mode type the command does not echo 3 AT Z Function Restart the module Format Set AT Z CR AT Z CR AT Z CR AT Z CR CR LF OK CR LF CR LF OK CR LF CR LF OK CR LF CR LF OK CR LF Parameters none After the command is exe...

Страница 32: ... port keywords CR LF CR LF OK port keywords CR LF Set AT AT AT AT SEARCH SEARCH SEARCH SEARCH CR CR CR CR CR LF OK CR LF OK CR LF OK CR LF OK port keywords CR LF port keywords CR LF port keywords CR LF port keywords CR LF Parameters port Search module port default 48899 keywords Module search keywords default www usr cn Up to 20 bytes 8 AT MID Function Set the MID query module Format Query AT MID ...

Страница 33: ... CR LF Parameters username The user name the length must be 5 characters does not support null password Password the length must be 5 characters 11 AT VER Function Set query module firmware version Format Query AT VER CR AT VER CR AT VER CR AT VER CR CR LF OK ver CR LF CR LF OK ver CR LF CR LF OK ver CR LF CR LF OK ver CR LF Set AT VER ver CR AT VER ver CR AT VER ver CR AT VER ver CR CR LF OK CR L...

Страница 34: ...the query wifi working mode Format Query AT WMODE CR AT WMODE CR AT WMODE CR AT WMODE CR CR LF OK CR LF OK CR LF OK CR LF OK status status status status CR LF CR LF CR LF CR LF Set AT WMODE AT WMODE AT WMODE AT WMODE status status status status CR CR CR CR CR LF OK CR LF CR LF OK CR LF CR LF OK CR LF CR LF OK CR LF Parameters status AP The module in the AP mode STA The module in the STA model 15 A...

Страница 35: ... status rssi CR LF CR LF OK status rssi CR LF CR LF OK status rssi CR LF CR LF OK status rssi CR LF Parameters status If there is no connection return Disconnected If there is a connection return AP SSID AP MAC rssi 0 100 When signal strength is required less than 10 weak signal when the data transmission may lose data 18 AT WAP Function Set query AP wi fi configuration parameters Format Query AT ...

Страница 36: ...R LF OK CR LF CR LF OK CR LF Parameters Protocol Protocol type including TCPS TCP server TCPC TCP client UDPS UDP server UDPC UDP client IP When the module is set to CLIENT the IP address of the server Port Protocol port decimal number less than 65535 21 AT LANN Function Set the IP query AP mode Format Query AT LANN CR AT LANN CR AT LANN CR AT LANN CR CR LF OK IP MASK CR LF CR LF OK IP MASK CR LF ...

Страница 37: ... Only link to the server sends a registered packet for the first time 24 AT REGID Function Set the query registration packet ID Format Query AT REGID CR AT REGID CR AT REGID CR AT REGID CR CR LF OK CR LF OK CR LF OK CR LF OK NUM CR LF NUM CR LF NUM CR LF NUM CR LF Set AT REGID AT REGID AT REGID AT REGID NUM NUM NUM NUM CR CR CR CR CR LF OK CR LF CR LF OK CR LF CR LF OK CR LF CR LF OK CR LF Paramet...

Страница 38: ...rl CTS RTS NFC Disable hardware flow control FC Enable hardware flow control 485 485 communications UART_RTS as 485 send control terminal Note when the baud rate are subject to change will automatically change the packaging interval see 27 AT UARTTE 27 AT UARTTE Function Set query free framing intervals Format Query AT AT AT AT UARTTE CR UARTTE CR UARTTE CR UARTTE CR CR LF OK num CR LF CR LF OK nu...

Страница 39: ...R LF CR LF OK CR LF CR LF OK CR LF Parameters MODE 0 4 0 no sleep mode for setting module default 1 set the module to sleep mode 2 set the module to deepsleep mode 3 set the module to LPDS mode 4 set the module to deep sleep mode TIME 10 240 seconds Set the module without communication last time When last time no data transmission module enter the sleep mode according to the mode patterns into dif...

Страница 40: ...41 41 5 5 5 5 service service service service and and and and support support support support If you have problems when use the module you can submit the question to http h usriot com http h usriot com http h usriot com http h usriot com We will solve your question at the first time ...

Страница 41: ...r This document provides information about USR C321 modules this document does not grant any license to intellectual property rights Except the responsibility declared in the product sale clause USR does not assume any other responsibilities In addition USR does not make any warranties for the sale and use of this product including the suitability of the product for a particular purpose merchantab...

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