Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller Unit | IAP15W4K61S4 / IAP15W4K58S4 (8051 Core) |
| Operating Voltage | 5V DC (USB Powered) |
| Clock Frequency | Up to 35MHz (Adjustable) |
| Flash Memory | 62KB In-Application Programmable |
| SRAM | 4KB High-Speed RAM |
| Communication Interfaces | UART, SPI, I2C |
| IO Ports | Multiple GPIO pins with strong drive capability |
| Programming Method | USB Direct Download (No external programmer needed) |
| Onboard Peripherals | LEDs, Buttons, Buzzer, Potentiometer |
| Compatibility | STC-ISP Software, Keil C51 IDE |
Anonymous
Mar 31, 2026
Rating: 4/5
Great value but documentation could be better
Hardware quality is solid and the chip is fast. However, the included manual is a bit sparse on advanced peripheral examples. Once you find community tutorials, it works flawlessly.
Anonymous
Mar 20, 2026
Rating: 5/5
Best budget development board
As a university student on a budget, this offers incredible value. It has everything needed to complete coursework involving microcontrollers. Highly recommend for beginners.
Anonymous
Mar 13, 2026
Rating: 4/5
Nostalgic yet modern
Brings back memories of learning assembly, but with modern speed and flash capabilities. The 35MHz clock speed is impressive for a 51 core. Deducting one star only because the USB cable included was a bit short.
Anonymous
Mar 11, 2026
Rating: 5/5
Perfect for learning 8051 architecture
This board is excellent for students and hobbyists wanting to dive into the 51 MCU ecosystem. The direct USB programming feature saves so much time compared to older boards requiring serial converters.
Anonymous
Mar 09, 2026
Rating: 5/5
Robust build for competition use
Bought this for an embedded systems competition. The board handled complex logic and sensor integration without any hiccups. The onboard components like the potentiometer and buzzer are very convenient for quick testing.
Anonymous
Mar 01, 2026
Rating: 5/5
Fast delivery and works out of the box
Arrived well-packaged. Installed the STC-ISP driver immediately and uploaded my first blink program in minutes. The pinout is clearly labeled on the silkscreen.
Q: Can I power this board via a battery instead of USB?
A: Yes, there is a VIN pin that accepts 5V DC input, allowing you to power it with a battery pack or external supply.
Q: What is the difference between the 61S4 and 58S4 versions?
A: The primary difference is the amount of Flash memory and SRAM. The 61S4 typically offers slightly more memory resources than the 58S4, but both share the same core architecture and pinout.
Q: Does it work on macOS for programming?
A: The official STC-ISP software is Windows-based. Mac users typically need to run a Windows virtual machine or use Wine to operate the programming software.
Q: Is the source code for the demo programs included?
A: Yes, you can download the demo project files and source code from the link provided in the product description or by contacting support.
Q: Does this board support C language programming?
A: Yes, it is fully compatible with Keil C51 and other standard 8051 C compilers.
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