Walfront 8051 Microcontroller Development Board User Manual

1. Продукт бүтүп калдыview

The Walfront 8051 Microcontroller Development Board is designed for learning and experimentation with microcontrollers, specifically featuring a PIC16F877A chip and an RS232 communication interface. This board provides a robust platform for developing and testing embedded systems applications.

Сүрөт 1.1: жогорудан ылдыйга view of the Walfront 8051 Microcontroller Development Board, showcasing its various components including the ZIF socket, RS232 port, USB power input, and onboard buttons.

Негизги өзгөчөлүктөрү:

• Onboard 4M crystal oscillator, with a socket for easy replacement of crystal frequency.
• 4-bit independent keyboard connected to RB0, RB1, RB2, RB3 for user input.
• 8 LEDs connected to the RD port, enabling visual feedback. The J3 jumper controls LED activation, allowing the RD port to be fully released when unplugged.
• Standard RS232 communication interface for seamless communication between the microcontroller board and a computer.
• External 5V DC power interface, compatible with USB power cables.
• ICSP programming simulation interface, supporting connection to K150, PICKIT2, PICKIT3, ICD2, and other programming tools.
• VCC and GND pin header power extension interfaces for accessing or supplying 5-volt power.
• All MCU IO ports are extended via pin headers for easy access and expansion.

2. Кутуда эмне бар

Upon unpacking your Walfront 8051 Microcontroller Development Board, please verify that all components are present:

• 1 x Walfront 8051 Microcontroller Development Board
• 1 х USB кабелинин
• 1 x Board Support (standoffs)

Image 2.1: The development board shown alongside its included USB power cable, illustrating the typical contents of the package.

3. Орнотуу нускамалары

3.1 Кубат туташтыруу

1. Connect the provided USB power cable to the USB-POWER port on the development board.
2. Plug the other end of the USB cable into a 5V DC power source (e.g., a computer USB port or a USB wall adapter).
3. Alternatively, an external 5V DC power supply can be connected to the dedicated 5V DC power interface.

3.2 Microcontroller Installation

1. Carefully lift the lever of the ZIF (Zero Insertion Force) socket located in the center of the board.
2. Align the PIC16F877A microcontroller chip with the socket, ensuring the notch on the chip matches the orientation indicated on the socket.
3. Gently insert the chip into the socket. Do not force it.
4. Lower the ZIF socket lever to secure the chip in place.

Сүрөт 3.1: деталдуу view of the ZIF socket, where the microcontroller is inserted, and the 4M crystal oscillator, which can be replaced.

3.3 Перифериялык түзүлүштөрдү туташтыруу

• RS232 интерфейси: Connect a standard RS232 serial cable from the board's DB9 connector to your computer's serial port or a USB-to-serial adapter.
• LCD дисплейлери: The board supports LCD1602 and LCD12864 displays. Connect these to the designated LCD interface headers. Refer to the specific LCD module's datasheet for pin connections.
• DS18B20 Temperature Sensor: Connect the DS18B20 sensor to its dedicated interface pins.
• ICSP Programmer: For programming the microcontroller, connect a compatible ICSP programmer (e.g., K150, PICKIT2, PICKIT3, ICD2) to the ICSP programming simulation interface.

4. Иштөө нускамалары

4.1 Негизги операция

1. Ensure the board is powered on and the microcontroller is correctly installed.
2. Диоддордон: The 8 onboard LEDs connected to the RD port can be controlled via software. To enable them, ensure the J3 jumper is plugged in. Unplugging J3 releases the RD port for other uses.
3. Баскычтоп: The 4 independent buttons (KEY1, KEY2, KEY3, KEY4) connected to RB0-RB3 can be read by your microcontroller program for user input.
4. Калыбына келтирүү баскычы: Press the RESET button to restart the microcontroller's execution.

4.2 Programming the Microcontroller

1. Connect your ICSP programmer to the board's ICSP interface and to your computer.
2. Install the necessary programming software and drivers for your chosen ICSP programmer on your computer.
3. Develop your microcontroller code using a suitable IDE (e.g., MPLAB X IDE for PIC microcontrollers).
4. Compile your code to generate a HEX file.
5. Use the programming software to load the HEX file onto the PIC16F877A microcontroller via the ICSP interface.
6. After successful programming, disconnect the programmer and reset the board to run your new program.

5. Техникалык тейлөө

To ensure the longevity and proper functioning of your development board, follow these maintenance guidelines:

• Тактаны таза жана чаң менен таштандылардан таза кармаңыз. Тазалоо үчүн жумшак, кургак щетканы же кысылган абаны колдонуңуз.
• Тактаны өтө жогорку температурага, нымдуулукка же түз күн нуруна дуушар кылбаңыз.
• Handle the board by its edges to prevent damage to components and to minimize static discharge.
• Store the board in an anti-static bag when not in use.
• Regularly inspect connections and components for any signs of wear or damage.

6. Кыйынчылыктарды

If you encounter issues with your Walfront 8051 Microcontroller Development Board, refer to the following troubleshooting steps:

• Кубат/Платта жооп бербей жатат:
  • Verify that the 5V DC power supply is correctly connected and functioning.
  • Check the USB cable for damage and ensure it is securely plugged in.
• Microcontroller Not Programming:
  • Ensure the microcontroller chip is correctly seated in the ZIF socket and the lever is locked.
  • Confirm that your ICSP programmer is properly connected to the board and your computer.
  • Verify that the correct drivers for your ICSP programmer are installed and up-to-date on your computer.
  • Check the programming software settings to ensure the correct microcontroller model (PIC16F877A) is selected.
  • Some older programming software or drivers may not be compatible with modern operating systems. Consider using a compatible environment if issues persist.
• RS232 Communication Failure:
  • Check the RS232 cable connection between the board and your computer.
  • Verify the serial port settings (baud rate, data bits, parity, stop bits) in your software match those configured in your microcontroller program.
  • If using a USB-to-serial adapter, ensure its drivers are correctly installed.
• Светодиоддор иштебей жатат:
  • Ensure the J3 jumper is correctly plugged in to enable the LEDs.
  • Verify your microcontroller program is correctly controlling the RD port pins.

7. Техникалык шарттар

8. Кепилдик жана колдоо

For warranty information and technical support regarding your Walfront 8051 Microcontroller Development Board, please contact the seller or manufacturer directly. You may also visit the official Walfront store for additional product information and resources:

Visit the Walfront Store on Amazon