Ebyte E01C-ML01SP4, User Manual

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Chengdu Ebyte Electronic Technology Co.,Ltd.
E01C-ML01SP4 User Manual
7 Copyright ©2012–2021
，
Chengdu Ebyte Electronic Technology Co.,Ltd.

Power step:
SI24R1Register setting table
：
Address(Hex) Mnemonic Bit Reset Value Description
06 RF_SETUP Rf configuration
RF_PWR 2:0 110
TX transmitting power
111:7dBm 110:4dBm
101:3dBm 100:1dBm
011:0dBm 010:-4dBm
001:-6dBm 000:-12dBm

011
：
Front 0dBm, output 20dBm;

010
：
Front -4dBm
，
output 17dBm
；

011
：
Front -6dBm
，
output 14dBm;

000
：
Front -12dBm
，
output 8dBm;

IRQ is an interrupt pin. It is used to wake up the microcontroller and achieve fast response; users can leave it
unconnected and use SPI to query the interrupt status (not recommended, not conducive to overall power
consumption, low efficiency);

CE can be connected to high level for a long time, but the module must be set to POWER DOWN power-
down mode when writing to the register. It is recommended that CE be controlled by MCU pin.

The CE pin is connected to the LNA enable pin. When CE=1, LNA is turned on, and when CE=0, LNA is
turned off. This operation is completely consistent with the transceiver mode of nRF24L01; in other words,
the user does not need to care about LNA operation at all;

If the user needs to answer automatically, the CE pin must remain high during transmission. The correct
operation is: CE=1 to trigger the transmission. After knowing that the transmission is completed, CE=0,
instead of CE=0 after 10us. The reason is: After SI24R1 is sent, it will immediately switch to receiving mode.
At this time, if CE= 0, the LNA has been turned off, which is not conducive to receiving sensitivity.
5 Basic application