RN-131G
rn-131-um.pdf 5/14/2009
www.rovingnetworks.com
Phone 408-395-6539
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RN-131G Overview
The RN-131g “WiFly” radio module is a complete, stand alone, embedded wireless LAN access
device. The device has on board TCP/IP stack and applications. Requiring only 4 pins (POWER,
TX, RX, GND) to design in. Once initial configuration is set, the radio can automatically access
the WiFi network and send/receive serial data over UART.
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Qualified 2.4GHz IEEE 802.11b/g transceiver
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High throughput, up to 4Mbps sustained data rate with TCP/IP and WPA2
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Ultra-low power (4uA sleep, 35mA Rx, 110-180mA Tx)
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Small, compact surface mount module
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On board ceramic chip antenna and U.FL connector for external antenna
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8 Mbit flash memory and 128 KB RAM
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UART and SPI (future) data/control interfaces
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10 general purpose digital I/O
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8 analog inputs
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Real-time clock for wakeup and time stamping
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Accepts 3.3V regulated or 2-3V battery
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Supports Adhoc connections
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On board ECOS -OS, TCP/IP stacks
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Wi-Fi Alliance certified for WPA2-PSK
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FCC / CE/ ICS certified and RoHS compliant
Features
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Host Data Rate Up to 2.7 Mbps for UART
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Memory 128 KB RAM,2MB ROM, 2 KB battery-backed memory, 8 Mbit Flash.
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Intelligent, built-in power management with programmable wakeup
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Can be powered from regulated 3.3-3.7V source or 2.0-3.0V batteries
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Real time clock for time stamping, auto-sleep and auto-wakeup modes
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Configuration over UART or wireless interfaces using simple ASCII commands
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Over the air firmware upgrade (FTP), and data file upload.
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Secure WiFi authentication WEP-128, WPA-PSK (TKIP), WPA2-PSK (AES).
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Built in networking applications DHCP, UDP, DNS, ARP, ICMP
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802.11 power save and roaming functions
