WiSnap User Manual 4.41 05282015-ML
Page 4
1 Overview
The “WiSnap” radio module is a complete, standalone embedded wireless LAN access device. The device has an on-board
TCP/IP stack and requires only 4 pins (POWER, TX, RX, GND) to design in. The RS-232 interface can transfer data to remote
applications, such as an iPhone app, data logger, or PC control console. Once initial configuration is set, the radio can
automatically access the Wi-Fi network and send/receive serial data over UART.
Features
Fully Qualified and Wi-Fi Certified 2.4GHz IEEE 802.11b/g transceiver
High throughput, up to 4Mbps sustained data rate with TCP/IP and WPA2
Ultra-low power (4uA sleep, 40mA Rx, 210mA max Tx)
Small, compact surface mount module
On board ceramic chip antenna and U.FL connector for external antenna
UART and SPI (future) data/control interfaces
10 general purpose digital I/O
8 analog inputs
Real-time clock for wakeup and time stamping/data logging, auto-sleep and auto-wakeup modes
Accepts 3.3V regulated or 2-3V battery with on board boost regulators
Supports Ad-hoc and Infrastructure mode connections
On board ECOS-OS, TCP/IP stacks
Wi-Fi Alliance certified for WPA2-PSK
FCC / CE/ ICS certified and RoHS compliant
Host Data Rate Up to 2.7 Mbps for UART
Memory 128 KB RAM, 2MB ROM, 2 KB battery-backed memory, 8 Mbit Flash
Intelligent, built-in power management with programmable wakeup
Can be powered from regulated 3.3-3.7V source or 2.0-3.0V batteries
Configuration over UART or wireless interfaces using simple ASCII commands
Over the air firmware upgrade (FTP), and data file upload
Secure Wi-Fi authentication WEP-128, WPA-PSK (TKIP), WPA2-PSK (AES)
Built in networking applications DHCP client, UDP, DNS client, ARP, ICMP ping, FTP, TELNET, HTTP
802.11 power save and roaming functions
One of the main applications for this device is the iPhone, since it requires buying additional authorization hardware to use
Bluetooth SPP; the WiSnap in ad-hoc mode is a simple and cost effective way to connect to iPhone apps. The WiSnap Serial
Adapter is more than a cable replacement solution. By allowing multiple TCP/IP sockets, applications can control and monitor
hundreds of Wi-Fi Serial adapters remotely distributed across a building LAN or campus WAN.
2 Hardware Interface
Please see the specific data sheet on the SerialIO.com website for hardware specifications and layout information, located
here:
http://serialio.com/support/wifi/Serialio_WiSnap_GSX_Super_Module_Specs_2.0.pdf
2.1 Power
2.1.1 WiSnap M1 SuRFBoard
There are two options for powering the WiSnap module directly.
DC SUPPLY:
