Ezurio WISMC01BI User Manual

www.ezurio.com

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

• POS Equipment

• Medical Equipment

• Telematics

• Industrial Automation

• Automotive Applications

• Battery Powered Sensors

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2. Features

Feature Implementation

Wireless LAN Transmission Complete stand alone device with on board flash

Drivers Embedded 802.11b/g

Protocol TCP/IP IPv4 and DHCP

Range 100 metres typical

Frequency 2.4 – 2.484 GHz

11 channels – USA

Channels

Max Transmit Power

Receive Sensitivity -84dBm @ 2Mbps

13 channels – Europe (excl France)

14 channels – Japan

4 channels – France

+15 dBm @ antenna connector.

+17dBm from integrated antenna

+10 dBm limit for France and Hungary

Interface UART Interface

Programmable Real-time scripting engine

Data Transfer rate Up to 2 Mbps (determined by UART)

Serial Interface

Serial parameters Default 115200,n,8,1.

Configurable from 9,600 bps. Default 921,600 bps

Security WEP encryption 64 and 128 bit options, WPA, WPA2, SSL

Network support Access Point

I/O 2 x 10bit ADC’s

9 GPIO

Current consumption

Temperature Range

Supply Voltage 3.3V – 5.0V

Interface Levels 3.0V Logic

Connection Option: 40 way BISM II pin compatible Hirose connector

Lead free Lead-free and RoHS compliant

Warranty 2 Years

RS-232 bi-directional for commands and data.

16550 compatible. DTR, DSR, DCD, RI, RTS, CTS

Less than 250mA (this depends on the data rate – 250mA is at
115kbaud) during data transfer with a configurable low power mode

-40°C to +85°C (requires operation in powersave modes)

-30°C to +60°C (continuous operation)

The features described within this data sheet are those targeted for the first production
release of firmware. Note that not all of these features may be available within individual
releases of the Engineering Sample firmware. Check with the firmware release notes to
determine the supported functionality.

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2.1 Block Diagram

The module will have 40 way Hirose connector which will have a compatible pin out to the
EZURiO Bluetooth Intelligent Serial Module, BISM II Hirose connector.

3. Mechanical

Figure 1 Wireless LAN Module Dimensional outline

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1 RF antenna 2 Optional RF connector (Hirose U.FL-R-SMT)

3 Board to board connector (Hirose connector) 4 2MM maximum top side component height

(excluding antenna)

5 1.5MM maximum bottom side component

height

7 40 way connector 8 2.2 +/- 0.075 fixing holes X 3

6 3.8 max. pcb clearance for fixings body (top

and bottom)

3.1 40 way Hirose Pin Descriptions

The Hirose DF12C board-to-board connector on the module is a 40-pin double-row receptacle.

The table below defines the pin functions. Note that this pin-out is as viewed from the underside of the
Module.

Pin

Signal Description Pin

No.

1 ADC 0 1.8v Max 2 GPIO1 I/O for Host.

3 ADC 1 1.8v Max 4 GPIO2 I/O for Host

WLAN_ACTIVE

5

7 N/C

9 N/C

11 GND 12 GPIO3/UART_DTR I/O for Host

13 RESET Reset I/P * 14 GPIO4 I/O for Host

15 GND 16 GPIO5 I/O for Host

17 N/C Not used 18 GND

19 UART_CTS Clear to Send I/P 20 IRQ0 Input

21 UART_TX Transmit Data O/P 22 WAKEUP Not used

23 UART_RTS Request to Send O/P 24 BT_PRIORITY Input

Output

6 UART_RI ‘Ring’ Input or Output

8 UART_DCD Input or Output

10 UART_DSR Input

Signal Description

No.

© 2005-2006 Ezurio Ltd Data Sheet

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