User's Manual

MaxStream, Inc. 24XStream Wireless Module Manual v2.8
17
Sleep Settings Transition to Sleep
Mode
Return to Idle
Mode
Sleep Current Configure these
Commands
No Sleep Mode None. The module
remains in Idle Mode.
(Default Setting)
-
50 mA
-
Pin Sleep High on SLEEP pin
(pin 2).
Low on SLEEP pin. <2 uA SM
Serial Port Sleep Automatic transition
after a user-defined
period of module
inactivity (no
transmitting or
receiving of data).
Set by ST command.
Any serial byte
received on DI pin.
1 mA SM, ST
Cyclic Sleep Automatic transition
after a user-defined
period of module
inactivity (no
transmitting or
receiving of data).
Set by ST command.
Periodically returns
to Idle Mode
0.5 Cyclic:
Min: 60ìA
Max: 40mA
Avg: 7.4mA
2.0 Cyclic:
Min: 60ìA
Max: 35.7mA
Avg: 2.07mA
8.0 Cyclic:
Min: 60ìA
Max: 35.56mA
Avg: 630 ìA
1.0 Cyclic:
Min: 60ìA
Max: 35.7mA
Avg: 4mA
4.0 Cyclic:
Min: 60ìA
Max: 35.7mA
Avg: 1.1mA
SM, ST, LH, HT
The following sections describe how each setting operates.
Pin Sleep (SM=1)
After enabling the Pin Sleep setting, the SLEEP pin (Pin 2) controls whether the 24XStream is
active or in Sleep Mode. If SLEEP is low, the module is fully operational. Once SLEEP is
driven high (asserted), the module transitions to Sleep Mode and remains in its lowest power-
consuming state until the SLEEP pin is de-asserted. The 24XStream requires 85 ms to transition
from Sleep Mode to Idle Mode. The SLEEP pin is only active if the module is set up to operate
in this mode; otherwise the pin is ignored. (See the ‘SM’ command in the “24XStream
Command Table” for more information.) Once in Pin Sleep Mode, the *CTS pin (Pin 1) is driven
high (de-asserted) to indicate that data should not be sent to the module during this time. The
TX/PWR pin (Pin 8) is driven low (de-asserted) when the module is in Pin Sleep Mode.
Serial Port Sleep (SM=2)
If this state is enabled, the module goes into Sleep Mode after a user-defined period of inactivity
(no transmitting or receiving of data). This period of time can be changed by modifying the ST
command. When the module is in Serial Port Sleep Mode, the TX/PWR pin (Pin 8) is de-
asserted. The module will return to Idle Mode once a character is received on the DI pin.
Cyclic Sleep (SM=3-7)
If the Cyclic Sleep setting is enabled, the 24XStream module goes into Sleep Mode after a user-
defined period of inactivity (no transmission or reception on the RF channel). This user-defined