[Operating frequency]：410~493MHz
[Transmitting power]：33dBm
[Communication distance]：16km
[Product size]：38.5*24mm
[Introduction]：E220-400M33S is based on the new generation of LoRaTM RF chip LLCC68 produced by Semtech. It is independently developed with a maximum power of 2W and is suitable for 433/470MHz SMD LoRaTM wireless modules. It uses an industrial-grade high-precision 32MHz crystal oscillator. Since the imported LLCC68 is used as the core of the module, a power amplifier (PA) and a low-noise amplifier (LNA) are built in on the original basis, so that the maximum transmission power reaches 2W and the receiving sensitivity is further improved. The overall communication stability is greatly improved compared to products without power amplifiers and low-noise amplifiers.
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| Pin number | Pin name | Pin direction | Pin usage |
| 1 | GND | - | Ground wire, connected to the power reference ground |
| 2 | GND | - | Ground wire, connected to the power reference ground |
| 3 | GND | - | Ground wire, connected to the power reference ground |
| 4 | GND | - | Ground wire, connected to the power reference ground |
| 5 | GND | - | Ground wire, connected to the power reference ground |
| 6 | RXEN | input | The radio frequency switch receives the control pin, connects to the external microcontroller IO, and is active at high level. |
| 7 | TXEN | input | RF switch emission control pin, connected to external microcontroller IO or DIO2, active at high level |
| 8 | DIO2 | input/output | Configurable general-purpose IO port (see LLCC68 manual for details) |
| 9 | VCC | - | Power supply, range 3~5.5V (it is recommended to add external ceramic filter capacitors) |
| 10 | VCC | - | Power supply, range 3~5.5V (it is recommended to add external ceramic filter capacitors) |
| 11 | GND | - | Ground wire, connected to the power reference ground |
| 12 | GND | - | Ground wire, connected to the power reference ground |
| 13 | DIO1 | input/output | Configurable general-purpose IO port (see LLCC68 manual for details) |
| 14 | BUSY | output | Used for status indication (see LLCC68 manual for details) |
| 15 | NRST | input | Chip reset trigger input pin, active low level |
| 16 | MISO | output | SPI data output pin |
| 17 | SMOKE | input | SPI data input pin |
| 18 | SCK | input | SPI clock input pin |
| 19 | NSS | input | Module chip select pin, used to start an SPI communication |
| 20 | GND | - | Ground wire, connected to the power reference ground |
| 21 | ON | - | RF interface, stamp hole (50 ohm characteristic impedance) |
| 22 | GND | - | Ground wire, connected to the power reference ground |
| ★ For details about the module’s pin definition, software driver and communication protocol, please refer to SEMTECH’s official "LLCC68 Datasheet" ★ | |||