1. పరిచయం
The EBYTE E220-900T30D is a high-performance LoRa wireless serial port module designed for long-range, low-power communication. Based on the LLCC68 chip, it operates in the 850.125~930.125MHz frequency band (default 868.125MHz) and offers a maximum transmit power of 30dBm, enabling communication distances up to 10km under ideal conditions. This module provides TTL level output and is compatible with both 3.3V and 5V IO port voltages, making it versatile for various embedded applications.
This manual provides detailed information on the module's features, specifications, setup, operation, and troubleshooting to ensure optimal performance and reliable communication.
2 కీ ఫీచర్లు
- Utilizes the new LoRa spread spectrum modulation technology based on LLCC68, offering extended communication range and enhanced anti-interference capabilities.
- Supports user-defined communication keys for improved data confidentiality.
- Incorporates LBT (Listen Before Talk) function to monitor channel noise before transmission, significantly increasing communication success rates in challenging environments.
- Features RSSI (Received Signal Strength Indicator) for signal quality evaluation, network optimization, and ranging applications.
- Supports air wakeup (ultra-low power consumption function), ideal for battery-powered devices.
- Enables fixed-point transmission, broadcast transmission, and channel monitoring.
- Deep sleep mode with power consumption as low as 5uA.
- Integrated PA+LNA (Power Amplifier + Low Noise Amplifier) for a communication distance of up to 10km in ideal conditions.
- Parameters are saved automatically after power-off and restored upon power-on.
- Efficient watchdog design ensures automatic restart and continued operation in case of exceptions.
- Supports data transmission rates from 2.4kbps to 62.5kbps.
- విస్తృత ఆపరేటింగ్ వాల్యూమ్tage range of 3.0V to 5.5V (5V recommended for best performance).
- Industrial standard design, suitable for long-term use at -40°C to +85°C.
- Standard SMA antenna interface for easy antenna connection.
3. స్పెసిఫికేషన్లు
Figure 3.1: E220-900T30D Technical Parameters
| పరామితి | విలువ |
|---|---|
| IC | LLCC68 |
| ఫ్రీక్వెన్సీ | 850.125~930.125MHz (Default 868.125MHz) |
| శక్తిని ప్రసారం చేయండి | 30 డిబిఎం |
| కమ్యూనికేషన్ దూరం | Up to 10km (ideal conditions) |
| మాడ్యూల్ కొలతలు | 24 మిమీ x 43 మిమీ |
| ఆపరేటింగ్ వాల్యూమ్tage | 3.0 వి ~ 5.5 వి |
| కమ్యూనికేషన్ స్థాయి | 3.3V / 5V TTL |
| ఆపరేటింగ్ ఉష్ణోగ్రత | -40°C ~ +85°C |
| డేటా రేటు | 2.4kbps ~ 62.5kbps |
| స్లీప్ కరెంట్ | ~5uA |
| యాంటెన్నా ఇంటర్ఫేస్ | SMA-K |
| ఇంటర్ఫేస్ | UART సీరియల్ పోర్ట్ |
Figure 3.2: E220-900T30D Module Overview మరియు కొలతలు
4. సెటప్ మరియు ఇన్స్టాలేషన్
4.1 Pinout and Connections
The E220-900T30D module features a standard DIP package with clearly defined pins for power, ground, UART communication, and control signals. Proper connection to your microcontroller or host system is crucial for stable operation.
Figure 4.1: Module Component Details and Pinout Example
Connect the module's VCC pin to a stable 3.0V-5.5V power supply. Ensure the ground (GND) pin is connected to the system ground. For serial communication, connect the module's TXD to the host's RXD and the module's RXD to the host's TXD. Additional control pins (e.g., AUX, M0, M1) should be connected as per your application's requirements for mode selection and status indication.
4.2 యాంటెన్నా కనెక్షన్
The module uses an SMA-K antenna interface. Connect a suitable 868MHz or 915MHz LoRa antenna to this port. Ensure the antenna is securely fastened to achieve optimal communication range and performance.
5. ఆపరేటింగ్ సూచనలు
5.1 కమ్యూనికేషన్ మోడ్లు
The E220-900T30D supports various communication modes, including transparent transmission, fixed-point transmission, and broadcast transmission. These modes are typically configured via AT commands or by setting the M0 and M1 pins, allowing flexibility for different network topologies and application needs.
5.2 డేటా ట్రాన్స్మిషన్
Data is transmitted via the UART serial interface. The module handles the LoRa modulation and demodulation internally. Users can send and receive data packets through the TXD and RXD pins at configurable baud rates. The module supports a data transmission rate range of 2.4kbps to 62.5kbps.
5.3 పవర్ మేనేజ్మెంట్
The module supports an air wakeup function and a deep sleep mode. In deep sleep, the power consumption is significantly reduced to approximately 5uA, making it suitable for battery-powered applications where energy efficiency is critical. The module can be woken up by external signals or predefined timers.
6 అప్లికేషన్లు
The E220-900T30D LoRa module is suitable for a wide range of applications requiring long-range, low-power wireless communication:
- Home security alarm systems and remote keyless entry.
- స్మార్ట్ హోమ్ మరియు ఇండస్ట్రియల్ సెన్సార్ నెట్వర్క్లు.
- వైర్లెస్ అలారం భద్రతా వ్యవస్థలు.
- బిల్డింగ్ ఆటోమేషన్ సొల్యూషన్స్.
- Wireless industrial-grade remote control systems.
- Advanced Metering Infrastructure (AMI).
- ఆటోమోటివ్ పరిశ్రమ అప్లికేషన్లు.
Figure 6.1: Smart Building Applications and RSSI Functionality
7. ట్రబుల్షూటింగ్
- కమ్యూనికేషన్ లేదు: Verify power supply (3.0V-5.5V), UART connections (TX/RX swapped?), and baud rate settings. Ensure M0/M1 pins are correctly configured for the desired operating mode.
- స్వల్ప కమ్యూనికేషన్ పరిధి: Check antenna connection and type. Ensure the antenna is suitable for the operating frequency (868MHz/915MHz). Verify line-of-sight and minimize obstacles. Check transmit power settings.
- జోక్యం సమస్యలు: Utilize the LBT function if available in your firmware. Consider changing the operating frequency within the allowed band or adjusting spreading factor/bandwidth settings.
- మాడ్యూల్ స్పందించడం లేదు: Check power supply stability. If the module has a reset pin, try toggling it. Ensure the module is not in deep sleep mode unexpectedly.
- డేటా అవినీతి: Verify UART baud rate and parity settings match between the module and host. Check for noise on power lines.
8. నిర్వహణ
The E220-900T30D module is designed for robust industrial use and requires minimal maintenance. However, adhering to the following guidelines can prolong its lifespan and ensure reliable operation:
- పర్యావరణ పరిస్థితులు: Operate the module within the specified temperature range (-40°C to +85°C) and avoid excessive humidity or corrosive environments.
- విద్యుత్ సరఫరా: Provide a stable and clean power supply within the recommended voltage range (3.0V-5.5V). Voltage fluctuations can affect performance and longevity.
- భౌతిక నిర్వహణ: Handle the module with care to prevent physical damage to components or solder joints. Avoid static discharge when handling.
- యాంటెన్నా: Ensure the antenna is always connected before powering on the module to prevent damage to the RF front end.
9. వారంటీ మరియు మద్దతు
EBYTE provides technical support and warranty services for its products. For detailed warranty information, technical assistance, or custom development services, please refer to the official EBYTE webసైట్ లేదా వారి కస్టమర్ సపోర్ట్ని సంప్రదించండి.
తయారీదారు: EBYTE
అధికారిక Webసైట్: http://www.cdebyte.com/
Figure 9.1: Product Packaging with Manufacturer Information
