Programming - Ebyte E220-900M30S Quick Start Manual

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still risk of damage);
The antenna installation structure has a great influence on the module performance, so it is necessary to ensure that
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the antenna is exposed, preferably vertically upward. When the module is installed inside the housing, the
high-quality antenna extension line can be used to extend the antenna to the outside of the housing;
The antenna must not be installed inside the metal shell, which will greatly weaken the transmission distance.
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4.2 Programming

This module is LLCC68+PA+LNA, and its driving method is completely equivalent to LLCC68, and users can
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operate in accordance with the LLCC68 chipset datasheet;
DIO1, DIO2 and DIO3 are common IO ports, which can be configured into multiple functions. DIO2 can be
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connected to TXEN, not to IO port of MCU, and is used to control RF switch emission. See LLCC68 manual for
details, and can be suspended if not used;
The internal use of 32mhz passive crystal oscillator, without pin control, software program control can be;
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The differences between LLCC68 and SX1262 / SX1268 were as follows
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1. SX1262 / SX1268 supports spread spectrum factors SF5, SF6, SF7, SF8, SF9, SF10, SF11 and SF12;
LLCC68 supports spread spectrum factors SF5, SF6, SF7, SF8, SF9, SF10 and SF11.
2. LLCC68 can set the spread spectrum factor and receive bandwidth:
LoRa® Rx/Tx, BW = 125 – 250 – 500 kHz
LoRa®，SF = 5 - 6 - 7 - 8 - 9 for BW = 125 kHz ，
LoRa®，SF = 5 - 6 - 7 - 8 - 9 - 10 for BW = 250 kHz ，
LoRa®，SF = 5 - 6 - 7 - 8 - 9 - 10 - 11 for BW = 500 kHz；
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E220-900M30S User Manual
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