Chengdu Ebyte Electronic Technology Co,;Ltd
E62-433T30D user manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co,;Ltd
8
6.1 Mode switch
No.
Remarks
1
The user can decide the operating mode by the combination of M1 and M0. The two GPIO of MCU can be used
to switch mode. After modifying M1 or M0, it will start to work in new mode 1 ms later if the module is free. If
there are any serial data that are yet to finish wireless transmitting, it will start to work in new mode after the
UART transmitting finished. After the module receives the wireless data & transmits the data through serial port,
it will start to work in new mode after the transmitting finished. Therefore, the mode-switch is only valid when
AUX outputs 1, otherwise it will delay.
2
For example, in mode 0 or mode 1, if the user inputs massive data consecutively and switches operating mode at
the same time, the mode-switch operation is invalid. New mode checking can only be started after all the user’s
data process completed. It is recommended to check AUX pinout status and wait 2ms after AUX outputs high
level before switching the mode.
3
If the module switches from other modes to stand-by mode, it will work in stand-by mode only after all the
remained data process completed. The feature can be used to save power consumption. For example, when the
transmitter works in mode 0, after the external MCU transmits data “12345”, it can switch to sleep mode
immediately without waiting the rising edge of the AUX pin, also the user’s main MCU will go dormancy
immediately. Then the module will transmit all the data through wireless transmission & go dormancy 1ms later
automatically, which reduces MCU working time & save power.
4
Likewise, this feature can be used in any mode-switch. The module will start to work in new mode within 1ms
after completing present mode task, which enables the user to omit the procedure of AUX inquiry and switch
mode swiftly. For example, when switching from transmitting mode to receiving mode, the user MCU can go
dormancy before mode-switch, using external interrupt function to get AUX change so that the mode-switch can
be realized.
5
This operation is very flexible and efficient. It is totally designed on the basis of the user MCU’s convenience, at
the same time the work load and power consumption of the whole system has been reduced and the efficiency of
whole system is largely improved.
6.2 Transmission mode (Mode 0)
Type
When M0 = 0, module works in mode 0
Ordinary
transmitting
operation
User can transmit the data when the modules are synced (PINLOCK = 1(high level)).
Benefit of the TDD feature, user can perform transmitting while receiving. The maximum
size of the data which can be transmit at one time is 2048 Bytes. After the AUX has
turned to 0(low-level), User can perform another 2048 Bytes transmitting operation. The
TDD feature is available whatever the air data rate or the baud rate is.
Continuous
transmitting
operation
The module can transmit data continuously with some particular combination of air data
rate and baud rate, which has been show below.
Air Data Rate = 16Kbps, Baud rate <= 2400bps;
Air Data Rate = 32Kbps, Baud rate <= 4800bps;
Air Data Rate = 64Kbps, Baud rate <= 9600bps;
Air Data Rate = 128Kbps, Baud rate <= 19200bps;
Notes: Although higher air data rate brings lower transmission delay and it allows user
transmits the data continuously at higher baud rate, the communication range will be
shorter.
