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UART WiFi Module
UART WiFi module RM08K
ITEM ID
Retail Price:$8.00
Wholesale Price:$7.00

DETAILS

1. BRIEF INTRODUCTION
HLK-RM08K is a new low-cost embedded UART-ETH-WIFI module (serial port - Ethernet - Wireless network) developed by Shenzhen Hi-Link (HK) co., Ltd.
     The product is a low power consumption WIFI module,supports EEE802.11b/g/n wireless protocol with small size and smart use,ully transparent transmission UART module, built-in TCP / IP protocol stack, enabling users short development cycle. It just needs host computer,WEB browser or APP to set up parameters, making the connection between UART and network.
 HLK-RM08K has stable performance and flexible use, meeting kinds of requirements of users. and strong technical supports could be provided. Also, it could be customized,such as WEB interface ,mobile phone app and so on.


Diagram 1. Function structure
 
 

2. HARDWARE EXPLANATION

2.1 Meachanical Dimentsions

     
Note:pitch of holes 2.0mm, pitch of holes 0.7mm.
Dimensions:40mm(length)X 29mm(width ) X 2.9mm(height)
 
2.2 Pin Definitions
No. FUNCTION DIRECTION DESCRIPTION
1 CTS1/G0 I/O CTS1
2 WDG O Watchdog
3 CTS0/G1 I/O CTS0
4 RTS0/G2 I/O RTS0
5 RES0 - (Reserved)
6 RES1 - (Reserved)
7 RES2 - (Reserved)
8 GND Power GND
9 WLED_N O WiFi LED(activate low)
10 VDD_O Power Out 3.3v OUTUP
11 EL4/G3 I/O ETH 4 LED
12 RES3 - (Reserved)
13 RES4 - (Reserved)
14 RES5 - (Reserved)
15 RES6 - (Reserved)
16 ES0 I ES0
17 TXN4/G4 A TXN4
18 TXP4/G5 A TXP4
19 RXP0 A RXP0
20 RXN0 A RXN0
21 TXP1/G6 A TXP1
22 TXN1/G7 A TXN1
23 RXP1/G8 A RXP1
24 RXN1/G9 A RXN1
25 RXP2/G10 A RXP2
26 RXN2/G11 A RXN2
27 TXP2/G12 A TXP2
28 TXN2/G13 A TXN2
29 TXP3/G14 A TXP3
30 TXN3/G15 A TXN3
31 RXP3/G16 A RXP3
32 RXN3/G17 A RXN3
33 RXP4/G18 A RXP4
34 RXN4/G19 A RXN4
35 TXN0 A TXN0
36 TXP0 A TXP0
37 INT O INTERRUPT (Reserved)
38 RX0 I RX0
39 TX0 O TX0
40 RX1/PWM0 I/O RX1
41 ELED0 O ETH 0 LED(activate low)
42 RST I Reset
43 ES1 I ES1
44 TX1/PWM1 I/O TX1
45 G20 I/O GPIO20 (Reserved)
46 VCC POWER 5V INPUT
47 EL1/G21 I/O ETH 1 LED
48 EL2/G22 I/O ETH 2 LED
49 EL3/G23 I/O ETH 3 LED
50 GND Power GND
51 RES7 - (Reserved)
52 RTS1/G24 I/O RTS1
                   Note: reserved pin is currently not used,please hang!
ES0 Function Introductions :
1. After System boot, ES0 keep the lower level time 0.05s<t<6s, Serial 0 exit transparent transmission.
2. After System boot, ES0 keep the lower level time 6s<t<12s, client settings reset.
3. On electic ES0 is a lower level, the lower level time 6s<t<12s, client settings reset.
 
ES1 Function Introductions :
1. After System boot, ES1 keep the lower level time 0.05s<t<6s, Serial 1 exit transparent transmission.
2. After System boot, ES1 keep thelower level time 6s<t<12s,factory reset.
Parameter storage :

RCFG:The parameters in the memory.
SCFG:General parameters.
CCFG:Save To C Instructions to save parameters.
FCFG:Factory factory Settings. Users can't modify.
 
1. Power on,module read SCFG to RCFG from flash.
2. Save instructions RCFG to SCFG.
3. Restore settings,copy CCFG to SCFG.
4. Save To C Save instructions RCFG to CCFG.
5. Factory resetting,copy FCFG to CCFG.
 
 

2.3 TYPICAL REFERENCE DESIGN

2.3.1 UART TO ETHERNET


2.3.2 USRT TO WIFI(AP OR STA)


2.3.3 GATAWAY MODE OR REPEATER MODE

Please refer to diagram of test board.
 
 
 

3. TECHNICAL SPECIFICATION

Network standard Wireless standard : IEEE 802.11n、IEEE 802.11g、IEEE 802.11b
Wired standard : IEEE 802.3、IEEE 802.3u
Wireless transmission rate 11n:Max150Mbps
11g:Max54Mbps
11b:Max11Mbps
Channels 1-14
frequency range 2.4-2.4835G
Transmit power 12-15DBM
Receive Sensitivity -70DB
Connector 1WAN\4LAN\2UART
Antenna
Antenna type External antenna (IPEX)
Function parameter
WIFI working mode STA/AP/Wireless Router
Repeater mode Support wireless bridge
Wireless security Wireless MAC address filtering
Wireless switch security function
64/128/152bit WEP encryption
WPA-PSK/WPA2-PSK、WPA-TKIP/WPA2-TKIPsecurity mechanism
Network management Web interface management
Configure file lead-in/out
WEB interface software upgrade
UART to network
Dual UART transparent transmission,two uart ports work individually
TCP socket connection Max connection number>20
UDP socket connection Max connection number>20
Serial baud rate 1200—2500000bps (2500000/n  1<=n<=65535)
Power consumption
MODE P C(m W ) NOTE
UART TO WIFI 110mA x 5V AP or STA(all the net ports closed)
UART TO ETH 70mA x 5V works only in WAN
Gateway mode(default mode) 160mA x 5V Wifi both WIFI and five NET ports work
Repeater mode(bridge mode) 160mA x 5V Wifi both WIFI and five NET ports work
Other parameters
Status light Status indication
Environmental standards
 
Working temperature:-20-55℃
Working humidity:10%-90%RH(NONCONDENSING)
Storage temperature:-40-80℃
Storage Humidity:5%-90%RH(NONCONDENSING)
Other functions Optional frequency bandwidth:20MHz\40MHz,AUTO
 

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