Ebyte E01C-ML01SP2, User Manual

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Chengdu Ebyte Electronic Technology Co.,Ltd. E01C-ML01SP2 User Manual
Copyright ©2012–2020
，
Chengdu Ebyte Electronic Technology Co., Ltd
7

The antenna must not be installed inside the metal case, which will cause the transmission distance to be greatly
weakened.

Conductors or other sources of interference should be avoided around the onboard PCB antenna
.
4.2 Software editing

The drive mode of this module PA+LNA is completely equivalent to SI24R1, and users can operate
according to the SI24R1 chip manual (see SI24R1 manual for details);
Power bin:
SI24R1 register setting table:
Address(Hex) Mnemonic Bit Reset Value Description
06 RF_SETUP RF configuration
RF_PWR 2:0 110 Set TX power
111:7dBm 110:4dBm
101:3dBm 100:1dBm
011:0dBm 010:-4dBm
001:-6dBm 000:-12dBm

011
：
Pre-stage-0dBm, Output 20dBm
；

010
：
Pre-stage-4dBm, Output 16dBm
；

011
：
Pre-stage-6dBm, Output 12dBm;

000
：
Pre-stage-12dBm, Output 6dBm;

IRQ is an interrupt pin, which can be used to wake up the microcontroller and achieve fast response; it can be
disconnected, and the interrupt status can be obtained by SPI query (not recommended, not conducive to overall
power consumption, and low efficiency);

CE can be connected to the high level for a long time, but the module must be set to POWER DOWN power-down
mode when writing the register. It is recommended that CE be controlled by the MCU pin;

The CE pin is connected to the LNA enable pin. When CE=1, the LNA is turned on, and when CE=0, the LNA is
turned off. This operation is completely consistent with the transceiver mode of nRF24L01; that is, the user does not
need to care about LNA operation at all;

If the user needs to answer automatically, the CE pin must be kept high during the transmission process, and the
high level time cannot be longer than 10us as mentioned in the n manual. 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 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.