User's Manual

Chengdu Ebyte Electronic Technology Co,;Ltd E70-915T30S user manual

6 Power saving mode

UART closes. Wireless works at WOR

power saving mode. Multiple time grades

can be configured.

Transmission is not available under

this mode. It can be woken up by

transmitter under mode 4 to achieve

low power consumption receiving.

7 Sleep mode

UART closes, wireless transmitting is

available and sleep mode is on.

It can be woken up by any falling

edge of M2, M1, M0.

6.1 Mode Switch

 The user can decide the operating mode by the combination of M0, M1 and M2. The two GPIOs of MCU can be

used to switch mode. After modifying M0, M1 or M2, it will start to work in new mode 1ms 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.

 For example, in mode 2 or mode 4, 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 pin out status and wait 2ms after AUX outputs high level

before switching the mode.

 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.

 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.

 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 RSSI Mode (Mode 0)

Status

M0=1 M1=0 M2=0