User Manual

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Operating modes
The F803-0049 has 2 operating modes: Idle and Active. In Active mode, the F803-0049
communicates actively with a tag or an external MCU. Idle mode includes two low consumption
states:
Hibernate and Tag Detector. The F803-0049 can switch from one mode to another.
Table 3. Operating modes
Mode
State
Description
Idle
Hibernate
Lowest power consumption. F803-0049 has
to be waken-up in order to communicate.
Low level on nIRQ_IN pin is the only wakeup
source.
Tag Detector
Low power consumption, Tag detection.
Wakeup source is configurable:
– Timer
– nIRQ_IN pin
– nSPI_SS pin
– Tag detector
LFO (low-frequency oscillator) is running in
this state.
Active
Standby or Reader
Main communication mode. HFO (high-
frequency oscillator) is running, F803-0049 is
able to decode and execute commands from
external MCU. It can switch the reader ON
and OFF and communicate with a tag or an
external MCU.
Hibernate and Tag-Detector states can only be activated by a command from the external MCU. As
soon as Application environmentany of these states are activated, the F803-0049 can no longer
communicate with the external MCU. It can only be woken up.
The behavior of the F803-0049 in 'Tag-Detector' state is defined by the Idle command.