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The wireless receiving function of the module is on, the data packet transmitted from the module working in mode 0 &
mode 1 can be received.
Receiving
After the data packet is received, the AUX outputs low level, 5ms later the module starts to transmit wireless data
through serial port TXD pin.
After all the wireless data have been transmitted via serial port, the AUX outputs high level.
6.3 Wake-up mode (mode 1)
When M1 = 0 & M0 = 1, module works in mode 1
The condition of data packet transmission & AUX function is the same as mode 0. The only difference is that the
module will add preamble code before each data packet automatically. The preamble code length depends on the
Transmitting
wake-up time set in the user parameters. The purpose of the preamble code is waking up the receiving module works in
mode 2. Therefore, the data package transmitted from mode 1 can be received by mode 0, mode1 and mode 2.
Receiving
The same as that in mode 0.
6.4 Power-saving mode (mode 2)
When M1 = 1 & M0 = 0, module works in mode 2
UART is closed, the module cannot receive any serial port data from outside MCU.
Transmitting
Hence the function of wireless transmission is not available for the module working in this mode.
In mode 2, it is required the data transmitter works in mode 1.
The wireless module monitors the preamble code at regular time.
Once it gets the preamble code, it will remain as receiving status and waiting for the completion of receiving the entire
valid data package.
Then the AUX outputs low level, 5ms later the serial port is open to transmit received wireless data through TXD.
Receiving
Finally, AUX outputs high level after process completed.
The wireless module stays in "power-saving – monitoring" working status (polling).
By setting different wake-up time, the module will have different receiving response delay (2s in maximum) and average
power consumption (30uA in minimum).
The user needs to achieve a balance between communication delay time & average power consumption.
6.5 Sleep mode (mode 3)
When M1=1, M0=1, module works in mode 3
Transmitting
N/A
Receiving
N/A
This mode can be used for parameter setting. It uses serial port 9600 & 8N1 to set module working parameters through
Parameter setting
specific instruction format. (pls refer to parameters setting for details)
When the mode changes from stand-by mode to others, the module will reset its parameters, during which the AUX
Notes
keeps low level and then outputs high level after reset completed. It is recommended to check the AUX rising edge for
user.
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E32-433T33S user manual
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