[IC]：ASR6505
[Frequency]：850~925MHz
[Power]：22dBm
[Distance]：5.5km
[Size]：26* 16*2.8mm
[Introduction]：The E78 series products are radio frequency transceiver modules with multiple frequency bands designed and produced by Ebyte, with long communication distance and extremely low current consumption in low power consumption mode. This module is a small-volume patch type (pin spacing 1.1mm).
| Main Parameters | Value | Notice |
| Working voltage（V） | 1.8~3.7 | ≥3.3V can guarantee output power |
| Communication level（V） | 3.3 | Using 5V TTL is risky to burn |
| Working temperature（℃） | -40~+85 | Industrial design |
| Working frequency（MHz） | 850~925 | Support ISM frequency band |
| Emission current（mA） | 145 | Instantaneous power consumption |
| Receiving current（mA） | 13 | - |
| Sleep current（μA） | 2.0 | Software shutdown |
| Maximum transmit power（dBm） | 22 | - |
| Receiving sensitivity（dBm） | -122~-126 | The air rate is 595kbps |
| Air rate LoRa（bps） | 62.5k | User programmable customization |
| Air rate GFSK（bps） | 300K | User programmable customization |
| Ideal Range | 5500m | At Max TX power and 2.4kbps air rate, Two modules in a line of sight, clear weather, with 5dbi antennas at 2.5meters. |
| Crystal frequency | 32MHz | TXCO |
| Modulation | LoRa(recommended) | GFSK ，LoRa |
| Encapsulation method | SMA | - |
| Interface method | Stamp-hole | Diameter 1.1mm |
| Dimensions | 26*16mm | - |
| RF interface | IPEX/stamp-hole | Equivalent impedance is about 50Ω |
| No. | Name | Direction | Function |
| 1 | GND | - | Ground wire, connected to the power reference ground |
| 2 | LCD-SEG10 | Input/Output | MCU GPIO |
| 3 | LCD-SEG11 | Input/Output | MCU GPIO |
| 4 | LCD-SEG12 | Input/Output | MCU GPIO |
| 5 | LCD-SEG13 | Input/Output | MCU GPIO |
| 6 | LCD-SEG14 | Input/Output | MCU GPIO |
| 7 | LCD-SEG15 | Input/Output | MCU GPIO |
| 8 | LCD-SEG16 | Input/Output | MCU GPIO |
| 9 | LCD-SEG17 | Input/Output | MCU GPIO |
| 10 | I2C-SDA | Input/Output | I2C-SDA pin |
| 11 | I2C-SCL | Input/Output | I2C-SCL pin |
| 12 | ADC-IN0 | Input | ADC input pin |
| 13 | ADC-IN1 | Input | ADC input pin |
| 14 | GPIO2 | Input/Output | MCU GPIO |
| 15 | GPIO3 | Input/Output | MCU GPIO |
| 16 | GPIO4 | Input/Output | MCU GPIO |
| 17 | ADC_IN2 | Input | ADC input pin |
| 18 | GND | - | Ground wire, connected to the power reference ground |
| 19 | ANT | Output | Antenna interface, stamp hole (50 ohm characteristic impedance) |
| 20 | GND | - | Ground wire, connected to the power reference ground |
| 21 | GND | - | Ground wire, connected to the power reference ground |
| 22 | GND | - | Ground wire, connected to the power reference ground |
| 23 | GND | - | Ground wire, connected to the power reference ground |
| 24 | SPI-NSS | Input | SPI selection pin, external SPI can be selected |
| 25 | SPI-SCK | Input | SPI-SCK pin, can be used as external SPI |
| 26 | SPI_MISO | Output | SPI_MISO pin, can be used as external SPI |
| 27 | SPI_MOSI | Input | SPI MOSI pin, can be used as external SPI |
| 28 | LCD-SEG1 | - | MCU GPIO |
| 29 | LCD-SEG2 | Input/Output | MCU GPIO |
| 30 | SWIM | Input/Output | Programming pin |
| 31 | NRST | Input | External reset pin |
| 32 | LCD-COM0 | Input/Output | MCU GPIO |
| 33 | LCD-COM1 | Input/Output | MCU GPIO |
| 34 | LCD-COM2 | Input/Output | MCU GPIO |
| 35 | VREFP | Input | ADC reference voltage input |
| 36 | UART1-RX | Input | UART1-RX pin |
| 37 | UART1-TX | Output | UART1-TX pin |
| 38 | VLCD | Input | VLCD pin |
| 39 | LCD-SEG0 | Input/Output | MCU GPIO |
| 40 | GND | - | Ground wire, connected to the power reference ground |
| 41 | LCD-SEG3 | Input/Output | MCU GPIO |
| 42 | LCD-COM3 | Input/Output | MCU GPIO |
| 43 | LCD-SEG4 | Input/Output | MCU GPIO |
| 44 | LCD-SEG5 | Input/Output | MCU GPIO |
| 45 | UART0-RX | Input | UART0-RX pin |
| 46 | UART0-TX | Output | UART0-TX pin |
| 47 | LCD-SEG6 | Input/Output | MCU GPIO |
| 48 | LCD-SEG7 | Input/Output | MCU GPIO |
| 49 | LCD-SEG8 | Input/Output | MCU GPIO |
| 50 | LCD-SEG9 | Input/Output | MCU GPIO |
| 51 | VCC | - | Power supply, range 1.8V~3.7V (recommend to add ceramic filter capacitor) |
| 52 | GND | - | Ground wire, connected to the power reference ground |
| Order online |
| 【Aliexpress】：https://www.aliexpress.com/item |
| 【Aliexpress】：https://www.aliexpress.com |
| 【Aliexpress】：https://www.aliexpress.com/item |
| 【Aliexpress】：https://www.aliexpress.com |
| For batch order/customized product |
| 【Sales hotline】：+86-28-61399028 Ext.812 |
| 【E-mail】：service@cdebyte.com |
| Technical support |
| 【Submit online】：http://www.ebyte.com/en/apple-technology.aspx |
| 【E-mail】：support@cdebyte.com |
| 产品 型号 | Interface | IC | Frequency Hz | Power dBm | Distance km | Air Rate(bps) | Package | Size (mm) | Feature | 技术 手册 | 样品 购买 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E78-868LN22S(6601) | SoC | ASR6601 | 868M | 22 | 5.6 | 0.018~62.5k | SMD | 14*20 | standard LoRaWan node module | ||
| E78-470LN22S(6601) | SoC | ASR6601 | 470M | 21 | 5.6 | 0.018~62.5k | SMD | 14*20 | LoRa SoC RF Module | ||
| E78-900TBL-01A | USB | ASR6505 | 850~925M | - | 5.5 | - | - | 70*36 | E78 series module test board | ||
| E78-900M22S1A | SoC | ASR6505 | 868M 915M | 22 | 5.5 | - | SMD | 26* 16*2.8 | LoRa Spread spectrum | ||
| E78-400M22S1C | SoC | ASR6601 | 470M 433M | 21 | 5.5 | - | SMD | 26*16*2.8 | LoRa Spread Spectrum | ||
| E78-400TBL-01 | USB | - | - | - | - | - | - | 58*28 | E78 series module test board | ||
| E78-400M22S1A | - | ASR6505 | 470M 433M | 21 | 5.5 | - | SMD | 26* 16*2.8 | LoRaWan node module | ||
| E78-868LN22S | - | ASR6501 | 900MHz | 21 | - | - | SMD | 20* 14*2.8 | LoRa RF Module，Wireless Module | ||
| E78-470LN22S | - | ASR6501 | 433M | 22 | 7 | 0.018k~62.5k | SMD | 14*20 | Low consumption, anti-interference |
