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© 2005-2006 Ezurio Ltd
Data Sheet
1
802.11b/g Wireless LAN – TCP/IP (BISM II Pin Compatible)
Part Number: WISMC01BI
1.
General Description
EZURiO’s Wireless LAN Module is a fully integrated and qualified solution for adding 802.11
functionality to embedded products. Unlike other modules it implements a complete wireless system,
including antenna, 802.11b/g radio, wireless network drivers, TCP/IP stack, security (WEP, WPA2,
SSL), a web-server, UART, GPIOs, 10 bit ADCs, plus an interpreter with a wireless language and user
accessible flash storage for program scripts. It is ideal for integration within M2M applications. It can
also be used for remote monitoring with the addition of just a sensor and battery/power supply.
The optimised RF section provides an output of up to +17dBm using the integrated ceramic antenna.
Coupled with a receive sensitivity of -84dBm, a range of 100 metres is achievable. A separate u.fl
connector is fitted to the module which allows a second antenna to be connected to take advantage of
antenna diversity. For most applications the internal antenna is sufficient. It provides a largely
omnidirectional distribution and is highly resistant to detuning, allowing the module to be fitted in a
wide variety of situations with no degradation of the radio performance.
An integrated ARM processor runs all of the wireless drivers and protocol stack. It includes a web
server that can be used to interrogate the variety of interfaces within module. The processor runs
EZURiO’s high efficiency embedded interpreter, which gives the module its amazing power. Users can
write simple scripts for the interpreter, which supports the BASIC language, as well as an extensive
range of commands to control the wireless connection. Scripts can be auto-run at power up to turn
the module into a self-contained wireless application processor. A low cost development system is
available for fast product evaluation and development.
The module contains an industry standard RS-232 UART for connection to a host processor,
peripheral device or sensor. This is capable of baud rates up to 921,600 bps for high speed data
transfer. Nine General Purpose I/O lines and two 10 bit analogue input lines are also provided. These
can be configured using scripts to provide control or monitoring of simple devices such as switches or
LEDs without a requirement for any external processing. Both the GPIO and ADC lines can be
accessed either via the wired host UART connection, or remotely over the Wireless LAN connection.
For battery and low power operation, support is provided for IEEE powersave modes, which can
reduce the current consumption to less than 10mA. This makes the module ideal for battery powered
sensor applications.
The Wireless LAN module is supplied in a small pcb form factor (22.0mm x 34.0mm x 7.6mm), that
connects to a main pcb using a 40 way Hirose connector. It is pin compatible with the EZURiO
Bluetooth Intelligent Serial Module BISMII. The Wireless LAN module is Lead-free and is RoHS
compliant and supports an industrial temperature range of -40°C to +85°C.
1.1
Applications
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POS Equipment
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Medical Equipment
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Telematics
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Industrial Automation
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Automotive Applications
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Battery Powered Sensors