51/AVR Development Board Kit – STC89C52RC & MSP Microcontroller Minimum System Board with USB Cable

SKU: FA2021-2
Microcontroller

STC89C52RC (Included)
Operating Voltage

DC 3.3V – 5.5V (Powered via USB)
Clock Frequency

11.0592 MHz (Replaceable socket)
Communication

USB-to-TTL (Onboard Serial Chip)
IO Ports

32-bit I/O (All 40 pins accessible)
Program Memory

8K Bytes Flash
SRAM

512 Bytes
Board Dimensions

Approx. 65mm x 31mm
Description
The 51/AVR Development Board Kit is a versatile and compact learning and prototyping platform designed for students, engineers, and DIY hobbyists. Centered around the classic STC89C52RC (8051 architecture) and compatible with various AVR and MSP microcontrollers, this “Minimum System Board” provides all the essential circuitry required to get a microcontroller up and running.
This kit eliminates the complexity of breadboarding by providing integrated power management, a high-stability crystal oscillator, and a USB-to-Serial interface for direct programming and debugging via PC. Whether you are learning the fundamentals of C language programming or developing industrial control logic, this board serves as a reliable foundation for your embedded systems projects.
Key Features
  • Dual Compatibility: Supports a wide range of 40-pin microcontrollers, including the STC89 series, AT89S series, and various AVR/MSP chips (via adapter or compatible pinouts).
  • Plug-and-Play Programming: Integrated USB interface for power and data, allowing for easy “One-Click” downloading of code without the need for an external programmer.
  • Industrial Stability: Features a high-quality manual reset button and a professional-grade crystal oscillator (11.0592MHz) for accurate baud rate generation.
  • Expandable I/O: All 40 pins are clearly labeled and broken out to standard headers, making it easy to connect external sensors, LCDs, relays, and motor drivers.
  • Power Protection: Onboard power LED indicator and self-recovery fuse to protect your computer’s USB port from overcurrent or short circuits.
  • Compact Design: Small footprint makes it ideal for embedding into final projects or fitting into crowded laboratory environments.
Usage Instructions
  1. Driver Installation: Install the USB-to-Serial driver (CH340/CP2102 depending on version) on your PC to recognize the board.
  2. Hardware Setup: Ensure the STC89C52RC chip is correctly seated in the locking socket. Connect the provided USB cable to your computer.
  3. Code Compilation: Write your code in Keil C51 or similar IDE and generate the .hex file.
  4. Downloading Code: Use the STC-ISP software. Select the correct COM port, click “Download,” and momentarily toggle the board’s power or press reset to begin the flash process.
  5. Prototyping: Connect your external modules (LEDs, Sensors, etc.) to the labeled header pins using DuPont jumper wires.
Q: Is this board suitable for beginners who have never programmed?

Yes! The 51-series microcontroller is the global standard for introductory embedded systems education. Its simple architecture makes it much easier to learn than modern ARM-based chips.

Q: Can I use this board for commercial/business prototyping?

Absolutely. Its “Minimum System” design is intended to be a stable core for industrial control testing. Many engineers use this board to verify logic before designing a custom PCB.

Q: Do I need an external power supply?

No. For most standard logic applications, the USB cable provides sufficient power (5V). If you are driving high-current loads like motors, we recommend using an external power source connected to the VCC/GND pins.

Q: What operating systems are supported for programming?

The board is compatible with Windows XP, 7, 8, 10, and 11. Mac and Linux support is available depending on the compiler used (such as SDCC).

Q: Does it support AT89S52 or other AVR chips?

The pinout is compatible with AT89S51/52; however, AT89S series chips require an external ISP programmer (like USBASP), whereas the included STC chip programs directly via USB.

Related products