Thông số kỹ thuật
- IC: SX1278
- Tần số: 410-441MHz
- Công suất: 21-30 dBm
- Khoảng cách: 8km
- Giao tiếp: UART
Sơ đồ chân
| No. | Item | Direction | Application |
| 1 | M0 | Input (weak pull-up) | Work with M1 & decide the four operating modes. (Floating is not allowed, can be ground) |
| 2 | M1 | Input (weak pull-up) | Work with M0 & decide the four operating modes. (Floating is not allowed, can be ground) |
| 3 | RXD | Input | TL UART inputs, connects to external TXD (MCU, PC) output pin.Can be configured as open-drain or pull-up input. |
| 4 | TXD | Output | TL UART inputs, connects to external TXD (MCU, PC) output pin.Can be configured as open-drain or pull-up input. |
| 5 | AUX | Output | To indicate module’s working status & wakes up the external MCU. During the procedure of self-check initialization, the pin outputs low level. Can be configured as open-drain output or push-pull output. (Floating is allowed) |
| 6 | VCC | Input | Power supply 3.3V~5.2V DC |
| 7 | GND | Input | Ground |
| 8 | Fixed hole | Fixing hole | |
| 9 | Fixed hole | Fixing hole | |
| 10 | Fixed hole | Fixing hole | |
| 11 | Fixed hole | Fixing hole |
Đặc tả kỹ thuật
| Operating voltage (V) | 5 |
| Communication level (V) | 3.3 |
| Operating frequency（MHz） | 410 ~ 441 |
| Transmitting Current (mA) | 106 |
| Receiving current（mA） | 15 |
| Sleep current（μA） | 4 |
| Max Tx Power（dBm） | 19~20 |
| Receiving sensitivity (dBm) | -147 |
| Reference distance | 8000 |
| Air data rate（bps) | 0.3k~19.2 kbps |
| Package | DIP |
| Size | 24*43 mm |
| Antenna | SMA-K |
| Communication interface | UART |
| Buffer | 512 bytes buffer |
| Operating temperature (℃) | -40 ~ 85 |
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