XK-Z11-M Digi International, XK-Z11-M Datasheet - Page 86

• Manufacturer Part Number: XK-Z11-M
• Description: ZIGBEE MODULE DEVELOPMENT KIT
• Manufacturer: Digi International
• Series: XBee™r
• Type: Transceiver, 802.15.4/ZigBeer

Specifications of XK-Z11-M

• Frequency: 2.4GHz
• For Use With/related Products: XBee Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 602-1184

© 2010 Digi International, Inc.
XBee®/XBee‐PRO® ZB RF Modules
In the figure above, t1, t2, and t3 represent the following events:
The time between T1 and T2 varies depending on the state of the module. In the worst case scenario, if the end
device is trying to join a network, or if it is waiting for an acknowledgment from a data transmission, the delay
could be up to a few seconds.
When the XBee is awake and is joined to a network, it sends a poll request to its parent to see if the parent has
any buffered data for it. The end device will continue to send poll requests every 100ms while it is awake.
•T1 - Time when Sleep_RQ is asserted (high)
•T2 - Time when the XBee enters sleep (CTS state change only if hardware flow control is enabled)
•T3 - Time when Sleep_RQ is de-asserted (low) and the module wakes.
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