DVK-WLM402 Laird Technologies, DVK-WLM402 Datasheet - Page 13

• Manufacturer Part Number: DVK-WLM402
• Description: DEVELOPMENT KIT WISM+
• Manufacturer: Laird Technologies
• Type: Transceiverr

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
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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