Software Editing; Basic Application; Basic Circuit Diagram - Ebyte E19-915M20S User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

4.2 Software editing

SX1278/SX1276+PA+LNA，same drive way as SX1278/SX1276，user can refer to SX1278/SX1276 datasheet.

DIO0、 DIO1、 DIO2、 DIO3、 DIO4、 DIO5 are configurable I/O ports for various application， see more in SX12786

datasheet. It can be floated when not used.
RST、 TXEN、 RXEN must be connected,among which RST control chip reset， TXEN, RXEN are for controlling RF

switch.
Make it ground well with large space for grounding and small power ripple. Filter capacitor is necessary and make

sure it is close to pin VCC and GND.
SPI communication rate should not be set too high, usually around 1Mbps.

In transmitting，set TXEN as high communication level，RXEN pin is low level; In receiving, set RXEN as high

communication level,TXEN is low level; Before powering off, set TXEN、RXEN as low level.
Re-initialize register configuration when the chip is idle for higher stability.


5.Basic application

5.1 Basic circuit diagram

Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
E19-915M20S User Manual
4-5