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Pricelist: Retail Price (B2C) Pricelist
Pricelist: Retail Price (B2C) Pricelist
8051 Microcontroller Development Board (Prototyping Platform) for AT89S51/AT89S52

8051 Microcontroller Development Board (Prototyping Platform) for AT89S51/AT89S52

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SpecificationDetails
Compatible MCUsAT89S51, AT89S52, and other 8051 variants
Crystal Frequency11.0592 MHz (Standard for Serial Comm)
Operating Voltage5V DC
Input Voltage7V to 12V (via DC Jack)
Onboard PeripheralsPower LED, Reset Switch, ISP Port
I/O AccessAll 40 pins broken out to headers
Price
₹ 237.29 ₹ 237.29
(Tax included)

Barcode: 5478796

Product Description

This 8051 Development Board is engineered to provide a plug-and-play experience for legacy 8-bit programming. It features a high-quality ZIF (Zero Insertion Force) socket (on premium versions) or a standard 40-pin IC base, allowing you to swap microcontrollers easily without damaging the pins. The board includes an onboard bridge rectifier and a voltage regulator, ensuring the MCU receives a stable 5V even when using an unregulated DC adapter.

Key Features

  • Universal 8051 Support: Specifically designed for the Atmel AT89S series, which is widely used in academic curriculums and basic industrial controllers.

  • ISP Programming Port: Includes a dedicated 10-pin In-System Programming (ISP) header, allowing you to flash code directly using a USBASP programmer without removing the chip.

  • Precise Timing: Equipped with an 11.0592 MHz crystal, which is the standard frequency required to achieve accurate baud rates for RS232 serial communication.

  • Prototyping Friendly: Every single port (P0, P1, P2, P3) is broken out to male headers, making it easy to connect to LEDs, LCDs, and keypads using jumper wires.

  • Built-in Power Circuitry: Features a DC barrel jack, power switch, and LED indicator, providing a self-contained power management system for your projects.

Technical Details

  • Dimensions: Standard prototyping size (~10cm x 8cm).

  • Reset Logic: Onboard manual reset button with power-on reset circuitry.

  • Connectivity: Port 0 includes required pull-up resistors for standard digital I/O use.

Prototyping and Engineering Tips from Robogears

  • Port 0 Pull-ups: Remember that Port 0 on the 8051 is an "open-drain" port. This board typically includes a resistor network to "pull up" these pins, but if you are building a custom circuit, you must remember that Port 0 cannot drive an LED high without these external resistors.

  • Crystal Swapping: If your project requires high-speed execution rather than serial accuracy, you can easily desolder the 11.0592 MHz crystal and replace it with a 12 MHz or 24 MHz version (depending on the specific MCU's limit).

  • ISP Programming: To program this board, you will need a USBASP Programmer. Connect the 10-pin ribbon cable to the ISP header, ensuring the notch faces the correct direction to avoid reversing the power pins.

  • Powering Peripheral Modules: The onboard 7805 regulator can provide enough current for the MCU and a few LEDs. If you are connecting a 16x2 LCD with backlight or a motor driver, consider powering those modules with a separate supply to avoid overheating the board's regulator.

Package Includes

  • 1 x 8051 Microcontroller Development Board (Base Platform)

  • Note: The microcontroller chip (AT89S52) is often sold separately unless specified in a kit.

Disclaimer

This board is designed for 5V microcontrollers. Do not attempt to use 3.3V variants without checking the voltage regulator settings. Always verify polarity before connecting an external DC adapter.