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XE24S100

XE24S100 the Smallest, Complete 2.4 GHZ FHSS Transceiver

Xecom 

Using the XE24S100 Power Saving Modes

The XE24S100 includes three low power operating

modes (Sleep, Power-Down and RF Monitor) to

allow the host application to make maximum use of

the available power. The #P command selects the

transceiver operating mode when it is not actively

transmitting or receiving data. Below are

descriptions of all of the available selections.

IDLE: In Idle Mode all XE24S100 circuits are

powered and available for immediate action. This

includes the RF receiver which actively monitors

the air for an incoming communications request.

SLEEP: In Sleep Mode all XE24S100 circuits are

powered-down to minimize power consumption.

The XE24S100 cannot accept commands or

respond to incoming RF communications requests

from Sleep mode. Any input on TXD will wake the

transceiver and return it to the previous mode,

either the Idle or Power-Down Mode Current

draw in Sleep Mode is less than 50 microamps.

POWER-DOWN: In Power-Down Mode all RF

circuitry is shut down but the communications

controller remains active to accept AT commands.

The XE24S100 cannot respond to incoming RF

communications requests. If a transmit RF or

receive RF command is received, the XE24S100

can activate the RF section in under 200

microseconds. Current draw in Power-Down

Mode is less than 2 milliamps.

RF MONITOR MODE: RF Monitor Mode holds

the transceiver in power down mode for an interval

set by Register S110. The transcevier then

activates, turns on its receiver, and checks the air

for incoming messages. If no messages are

detected within 200 milliseconds, the transceiver

returns to power down mode. If carrier is detected,

the transceiver completes the transaction before

returning to power down mode. S110 selects an

interval of 1 to 60 seconds. Power consumption in

RF Monitor Mode ranges from 1 to 10 milliamps

depending upon the activation interval.

AT COMMAND CONTROL

The XE24S100 power saving modes are controlled

by the AT#Pn command as described below.

AT#P0 Select Idle mode.

AT#P1 Select Sleep Mode.

AT#P2 Select Power-Down Mode.

AT#P3 Select RF Monitor Mode

RF MONITOR INTERVAL: S110=n

Values of 1 to 60 set the RF Monitor interval in 1

second increments

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XE24S100

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