Hardware Parameters | Parameter Value | Remark |
Crystal oscillation frequency | 32MHz
| - |
Package -
| SMD | - |
Connector | stamp hole | Spacing 1.27mm |
Communication interface | SPI
| 0-10Mbps |
Size | 10* 10*2.5 mm
| With shield |
Net weight | 0.5g±0.02g
|
|
RF interface | stamp hole | - |
Main Parameter | Performance | Remark |
Min. | Type | Max. |
Operating voltage(V)
| 1.8 | 3.3 | 3.7 | ≥3.3V can guarantee the output power, more than 3.7V will permanently burn the module |
Communication level(V) | - | 3.3 | - | Risk of burnout with 5V TTL |
Operating temperature(°C) | -40 |
| +85 | Industrial grade design |
power consumption | TX current (mA) | - | 100 | - | Instantaneous power consumption |
RX current (mA) | - | 10 | - | - |
Sleep current (uA) | - | 1.2 | - | software shutdown |
RF Parameter | Parameter Value
| Remark |
Operating frequency
| 410MHz~493MHz
| Support ISM |
Transmit power
| 21dBm~22dBm
| The software is adjustable and needs to be developed and set by the user |
Receiving sensitivity | -129dBm
| BW_L=250kHz,SF = 10,LORATM |
FIFO
| 256Byte
| Maximum length of single transmission |
Modulation mode LoRa | LoRa
| LoRa modulation is recommended |
Blocking power | 10dBm
| The probability of burning at close range is small |
Air rate LoRa | LoRa(bps) | 1.76k~62.5k
| User programming control |
Reference distance | 5500m
| Clear and open environment, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.4kbps |

Pin No. | Item
| Direction | Description
|
1 | VCC | - | Power supply, range 1.8V~3.7V (recommended to add external ceramic filter capacitor) |
2 | GND | -
| Ground wire, connected to the power reference ground |
3 | NRST | Input | NRST Input Chip reset trigger input pin, active low |
4 | NC | -
| -
|
5 | NC
| - | -
|
6 | ANT
| -
| RF interface, stamp hole |
7 | GND
| - | Ground wire, connected to the power reference ground |
8 | NC
| -
| -
|
9 | TXEN
| Input | RF switch launch control pin, connected to external microcontroller IO or DIO2, active high |
10 | RXEN
| Input | RF switch receiving control pin, connected to external microcontroller IO, active high |
11 | BUSY | Output | Used for status indication (see LLCC68 manual for details) |
12 | MISO
| Output | SPI data output pin |
13 | MOSI
| Input | SPI data input pin |
14 | NSS
| Input | Module chip select pin for starting an SPI communication |
15 | SCK
| Input | SPI clock input pin |
16 | GND
| - | Ground wire, connected to the power reference ground |
17 | NC
| -
| -
|
18 | DIO3
| Input/Output | Configurable general-purpose IO port (see LLCC68 manual for details) |
19 | DIO2
| Input/Output | Configurable general-purpose IO port (see LLCC68 manual for details) |
20 | DIO1 | Input/Output | Configurable general-purpose IO port (see LLCC68 manual for details) |