Product Descriptions
Ra-05/Ra-05U is a 2.4GHz RF transceiver module, equipped with SX1281 RF chip as the core processor, supporting multiple modulation modes such as LORa, FLRC, GFSK, and compatible with Bluetooth protocol. Ra-05/Ra-05U is a pure RF transceiver module that requires the use of MCU drivers or specialized SPI debugging tools.
LoRa direct sequence spread spectrum technology will bring longer communication distances and has the advantages of wide power spectrum and strong anti-interference ability. The module has a hardware FEC forward error correction algorithm, which has high encoding efficiency and strong error correction capability. In the event of sudden interference, it can actively correct the interfered data packets, greatly improving reliability and transmission distance.
Ra-05/Ra-05U has high transmission power and reception sensitivity, and has good performance in spectrum characteristics, harmonic spurious channel crosstalk, and other aspects.
Product Specifications
| 模组型号 Module model | Ra-05/Ra-05U |
| 模组封装 Module packaging | SMD-14 |
| 尺寸(mm) Size(mm) | Ra-05:15.0*24.0*3.1(±0.2)mm Ra-05U:15.0*17.8*3.1(±0.2)mm |
| 天线形式 Antenna form | Ra-05:板载天线(兼容IPEX座子)Onboard antenna (compatible with IPEX mount) Ra-05U:IPEX座子外接天线IPEX mount external antenna |
| 频谱范围 Spectrum range | 2400~2500MHz |
| 工作环境 Work environment | -40℃~85 ℃ |
| 存储环境 Storage environment | 40℃~125°C,<90%RH |
| 供电范围 Power supply range | 供电电压1.8V~3.6V Supply voltage 1.8V~3.6V |
| 支持接口 Support interfaces | UART or SPI |
| IO口数量 Number of IO ports | 3 |
The Ra-05 module has a total of 14 pins connected, as shown in the pin diagram. The pin function definition table is the interface definition
| 脚序 Foot sequence | 名称 Name | 功能说明 Function Description |
| 1 | VCC | 供电电源，范围 1.8~3.6V(建议外部增加陶瓷滤波电容) Power supply, range 1.8-3.6V (it is recommended to add ceramic filter capacitors externally) |
| 2 | GND | GND |
| 3 | MISO_TX | SPI 数据输出引脚;还可用于 UART 的发射引脚 SPI data output pin; Can also be used as the transmit pin for UART |
| 4 | MOSI_RX | SPI 数据输入引脚;还可用于 UART 的接收引脚 SPI data input pin; Can also be used as the receiving pin for UART |
| 5 | SCK_RTSN | SPI时钟输入引脚;还可用于 UART 请求发射引脚 SPI clock input pin; Can also be used for UART request transmission pin |
| 6 | NSS_CTS | 模块片选引脚 Module chip selection pins |
| 7 | GND | GND |
| 8 | GND | GND |
| 9 | NRESET | 芯片复位 Chip reset |
| 10 | BUSY | 用于状态指示 Used for status indication |
| 11 | DIO1 | 通用IO口 Universal IO port |
| 12 | DIO2 | 通用IO口 Universal IO port |
| 13 | DIO3 | 通用IO口 Universal IO port |
| 14 | GND | GND |
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