Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Core Chip | STC89C52RC / AT89S52 Compatible |
| Operating Voltage | 5V DC |
| Clock Frequency | 11.0592 MHz Crystal Oscillator |
| Program Memory | 8KB Flash ROM |
| Data Memory | 256 Bytes RAM |
| I/O Ports | 32 Programmable I/O Lines (P0-P3) |
| Interface Type | DB9 Serial Port / USB-to-TTL Header |
| Board Dimensions | 75mm x 55mm x 15mm |
| Reset Method | Manual Push-Button Reset Circuit |
| Package Contents | 1x Main Board, 1x USB Cable, Discrete Components Kit |
Anonymous
Mar 28, 2026
Rating: 5/5
Nostalgic and functional
Brings me back to my college days. The 11.0592MHz crystal ensures accurate baud rates for serial communication, which is often a pain point on cheaper clones. The layout is logical and easy to probe with an oscilloscope.
Anonymous
Mar 21, 2026
Rating: 4/5
Solid hardware, basic software support
The hardware quality is surprising for the price. All pins are broken out correctly. You will need to find your own IDE and compiler (like Keil or SDCC), as no software is included, but that is standard for this type of board.
Anonymous
Mar 18, 2026
Rating: 5/5
Reliable minimal system
No frills, just a working 51 microcontroller board. The reset button is responsive, and the power LED indicates status clearly. I used it to build a custom temperature logger and it performed flawlessly for weeks.
Anonymous
Mar 14, 2026
Rating: 5/5
Perfect for beginners learning assembly
This board is exactly what I needed to start learning 8051 architecture. The discrete parts allow you to see every component clearly, which helps in understanding the circuit design. Documentation was clear and the serial communication worked immediately.
Anonymous
Mar 02, 2026
Rating: 4/5
Great value but requires soldering knowledge
Excellent price point for a development kit. Note that some versions come as a kit requiring you to solder the discrete components yourself, which is great for learning but might be tricky for absolute novices. Once assembled, it runs stable code perfectly.
Anonymous
Mar 01, 2026
Rating: 5/5
Ideal for university labs
I purchased ten of these for my embedded systems course. They are robust enough to handle student errors and the minimal system design prevents confusion with unnecessary peripherals. Highly recommended for educational purposes.
Q: Can I power this board directly via USB?
A: Yes, if you are using a USB-to-TTL cable that provides 5V VCC output, you can power the board directly through the header pins. Alternatively, you can use a separate 5V DC power supply connected to the designated power pins. Do not exceed 5.5V to avoid damaging the chip.
Q: Is the crystal oscillator frequency changeable?
A: The board comes populated with an 11.0592MHz crystal, which is ideal for precise serial communication baud rates. While it is possible to desolder it and replace it with a different frequency (e.g., 12MHz), doing so requires soldering skills and will affect timing-dependent operations like UART.
Q: Does this board come pre-assembled or do I need to solder the parts?
A: This specific listing is for the 'Discrete Parts' version, which means it typically arrives as a kit requiring you to solder the components onto the PCB. This is designed to help learners understand the schematic and assembly process. Pre-assembled options may be available in other listings.
Q: Are there example codes included with the purchase?
A: Physical media is not included, but we provide a download link in the user manual (or on our product page) containing sample code in both C and Assembly. These examples cover GPIO toggling, timer interrupts, and serial communication to get you started quickly.
Q: What software do I need to program this microcontroller?
A: You can use popular compilers such as Keil C51, SDCC (open source), or ASM51 for assembly language. You will also need a programmer/downloader; this board usually supports standard serial downloading via a USB-to-TTL adapter if the boot loader is installed, or an external STC ISP programmer.
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