Digi XBee-PRO S3 User Manual

XBee-PRO XSC RF Module operation Operating modes
XBee®-PRO 900HP/XSC RF Modules
196
n Pin sleep
n Cyclic sleep
For the device to transition to Sleep Mode, the module must have a non-zero SM (Sleep Mode)
Parameter and one of the following must occur:
n The device is idle (no data transmission or reception) for a user-defined period of time. Refer to
the ST (Wake Time)
n The device asserts SLEEP (only for Pin Sleep option).
In Sleep Mode, the device will not transmit or receive data until the module first transitions to Idle
Mode. All Sleep Modes are enabled and disabled using the SM command. The device triggers
transitions into and out of sleep modes are triggered by various events as shown in the table below.
Sleep mode
setting
Transition into
Sleep mode
Transition out
of Sleep mode
Related
commands
Typical
power
consumption
(S3)*
Typical
power
consumption
(S3B)
Pin Sleep
(SM = 1)
microcontroller can
shut down and wake
devices by asserting
(high) SLEEP (pin 9).
The module
completes a
transmission or
reception before
activating Pin Sleep.
De-assert (low)
SLEEP (pin 9).
SM 50 µA 2.5 µA
CyclicSleep
(SM = 3-8)
Automatic transition
to Sleep Mode occurs
in cycles as defined
by the SM (Sleep
Mode) Command.
The cyclic sleep time
interval must be
shorter than the
“Wake-up Initializer
Timer” (set by LH
Command).
After the cyclic
sleep time
interval elapses.
Device can be
forced into Idle
Mode if PW (Pin
Wake-up)
command is
enabled.
SM, ST, HT,
LH, PW
76 µA
when
sleeping
2.5 µA
when
sleeping
*
The S3 hardware variant is a legacy design that is obsolete. New and old designs should use the
S3B hardware variant.
Pin Sleep (SM = 1)
To achieve this state, assert the SLEEP pin (high). The device remains in Pin Sleep until you de-assert
the SLEEP pin.
After enabling Pin Sleep, the SLEEP pin controls whether the device is active or sleeping. When the
host de-asserts SLEEP, the device is fully operational. When the host asserts SLEEP, the device
transitions to Sleep mode and remains in its lowest power-consuming state until the host de-asserts
the pin. This pin is only active if the device is setup to operate in this mode; otherwise the firmware
ignores the pin.

Digi XBee-PRO S3 Specifications

General

Brand	Digi
Model	XBee-PRO S3
Category	Control Unit
Language	English