8051 AVR MCU Minimum System Development Board Microcontroller Programmer

The 8051 89C51 89C52 89S51 89S52 AVR MCU Minimum System Development Board is a high-quality microcontroller programmer and development board designed for beginners and professionals. It’s ideal for learning embedded systems, programming, and circuit design using 8051 or AVR microcontrollers.

Features

All I/O Ports Easily Accessible

• All IO ports are fully led out, offering a complete classic minimal 51 system.
• Eliminates soldering hassles for quick prototyping.

Integrated ISP Interface

• Comes with a built-in 10-pin ISP download interface for easy AT89S52 microcontroller programming.
• Supports multiple chips: STC89C52, STC12C5A60S2, STC11/10x series, and AT89S52.

Easy Crystal Oscillator Replacement

• Round-hole socket for convenient crystal oscillator replacement (default: 11.0592 MHz).
• Stable frequency for reliable performance.

Flexible Power Supply Options

• Supports DC-005 socket (5.5mm × 2.1mm) or pin header input (next to the power switch).
• Includes power indicator LED and 5V power connector.

Convenient Design & Functionality

• Includes reset button with power-on and external reset modes.
• Green IC locking seat for easy chip replacement.
• Port P0 comes with pull-up resistors for better stability.
• Three additional channels of VCC and GND expansion pins.

Compact and Durable Build

• PCB size: 40mm × 88mm (4.1cm × 8.9cm).
• Includes four mounting screw holes for secure installation.

Package Includes

• 1 x 8051 Development Board
• 1 x 11.0592 MHz Crystal Oscillator
• All port headers (P0, P1, P2, P3) with pull-up resistor on P0
• 5V Power connector and DC5 input
• Power indicator LED
• 12MHz crystal oscillator (optional)
• Serial download interface (RXD, TXD, GND) for STC microcontrollers
• ATMEL ISP port for easy AT89S series programming
• Self-locking power switch and reset button
• IC locking seat for easy chip replacement

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