DVK-WLM402 Laird Technologies, DVK-WLM402 Datasheet - Page 13
![DEVELOPMENT KIT WISM+](/photos/28/97/289755/dvkwlm400_sml.jpg)
DVK-WLM402
Manufacturer Part Number
DVK-WLM402
Description
DEVELOPMENT KIT WISM+
Manufacturer
Laird Technologies
Type
Transceiverr
Datasheet
1.DVK-WLM400.pdf
(43 pages)
Specifications of DVK-WLM402
Frequency
2.4GHz
Processor Series
WISM+
Silicon Manufacturer
Laird Technologies
Kit Application Type
Communication & Networking
Application Sub Type
Wi-Fi Intelligent Serial
Kit Contents
PCB, 2x Antennas, Power Adapter, USB Cable, RS-232
Rohs Compliant
Yes
For Use With/related Products
WLM402
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
2.6 BUTTONS
2.6.1 Reset Button
This provides a hardware reset to the WISM+. The WISM+ will re-boot after this has been pressed. This button drives
WISM+
2.6.2 Restore Defaults Button
The Restore Defaults Button will restore the WISM+ with the saved environment which was set up at Laird
production/test time. The WISM+ must perform a boot while the Restore Defaults Button is pressed and remain
pressed until the heartbeat LED begins flashing in order for this function to work. This button is connected to the
WISM+
2.6.3 WAKEUP Button
This button is used to wake the WISM+ from a deep sleep. A WAPI API command is used over the host interface to
enter deep sleep. This button is connected to the WISM+ pin WAKEUP (pin# 63). When the button is pressed the
WISM+ WAKEUP pin is pulled to 3.3V which initiates a wake from deep sleep.
2.7 CLOCK
2.7.1 Real Time Clock
This is a Texas Instruments BQ32000 real time clock chip connected to the WISM+ I2C bus. WISM+ API commands
can be executed to both set and read the current time and date. This is only required in certain situations when using
WPA Enterprise security.
2.7.2 Real Time Clock Battery
This is the backup battery (not installed) for the real time clock on the Dev Kit board. The Real Time Clock chip will be
powered when the Dev Kit is powered up -even if the battery is not installed.
This battery is a standard lithium 3.0V 220mAH tabbed coin cell. If you want battery backup for the Clock, we
recommend part# CR2032RV-MFR (made by Renata) available at Mouser.
2.8 WISM+
Depending on which development kit which has been purchased, this will be either:
2.9 40 Pin Header
The 40 pin header allows access to certain WISM+ pins. The pin out of the header (J5) is defined in the Dev Kit board
schematics- See Section: “
© Laird Technology 2010
•
•
RESET_IN
RESTORE
WLM400 –for North America carrying FCC and IC approvals
WLM402 –for Europe with CE regulatory compliance
(pin# 21) to ground when it is pressed.
pin (pin# 56).
Schematics
RESTORE
”
is pulled LOW when the button is pressed.
Version 1.00
WISM+ DVK MANUAL
Page 8