RFM210LW Datasheet, PDF (13/17 Pages) List of Unclassifed Manufacturers – Low-Cost Consumer Electronics Applications

RFM210LW
5.5 Operation States
As the RFM210LW is operating in duty cycle receiving mode,the device will go through the states shown as
the figure below after the power up.
Power Up (PUP) State
Once the device is powered up, the device will go through the Power Up (PUP) sequence which includes the task of releasing the
Power-On Reset (POR), turning on the crystal and calibrating the internal blocks. The PUP takes about 4 ms to finish in the
always receive mode. The average current of the PUP sequence is about 0.9 mA.
SLEEP State
In this state, all the internal blocks are powered down except the sleep timer. The sleep time is fixed at 3 ms. The sleep current is
about 60 nA.
XTAL State
Once the device wakes up from the SLEEP State, the crystal oscillator restarts to work. The current consumption in this state is
about 520 uA.
TUNE State
The device is tuned to the desired frequency and ready to receive. It usually takes approximately 300 us to complete the tuning
sequence. The current consumption in this state is about 2 mA.
RX State
The device receives the incoming signals and outputs the demodulated data on the DOUT pin. The current in this state is about
3.3 mA (315 MHz) or 3.8 mA (433.92 MHz).
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