The MicroDigitalEd MDE 8051 Trainer is a development platform built around the Maxim Integrated DS89C450 microcontroller, delivering a practical environment for embedded systems education and prototyping. It combines on-board peripherals, dual serial interfaces, and flexible I/O connectivity to support 8051 assembly and C-language development from concept through deployment.
Technical Specifications
Microcontroller
• Maxim Integrated DS89C450 (8051/52 compatible)
• High-speed 8051 core with DC to 33 MHz operation
• 11.0592 MHz crystal oscillator
• 64 KB Flash memory
• 256 bytes on-chip scratchpad RAM
• 1 KB SRAM for MOVX operations
Programming & Control
• In-system programmable via serial port
• Serial port downloader compatible with PC HyperTerminal and terminal programs
• Dedicated run/program slide switch
• On-chip loader supported
Digital I/O & Connectivity
• Eight buffered LEDs and eight DIP slider switches (integrated digital I/O)
• Four bidirectional I/O ports
• Dual USART serial ports with RS232 compatibility (MAX232 level conversion)
• Two DB9 RS232 connectors plus right-angle header for third serial interface
• CTS and RTS handshaking lines on USB and RS232 ports
• Two 20-pin male and female connectors for breadboard and peripheral integration
• Pmod™ peripheral module compatible
Power & Physical
• Onboard +5V voltage regulator with dedicated power supply connector
• Includes power supply and USB cable
• Reset button and PORT 0 pull-up jumper
• Dimensions: 3.44″ W × 3.46″ L × 1.47″ H
• Four threaded standoff mounting provisions
– Key Features
Dual serial ports enable simultaneous communication pathways for program download and runtime monitoring. Terminal block and connector access simplifies breadboard integration and peripheral expansion. ISP capability eliminates external programming hardware dependencies.
– Typical Applications
Microcontroller education, embedded systems prototyping, peripheral interface experimentation, and 8051-based hardware validation.
– Compatibility & Integration
80C52 compatible. Supports Keil IDE versions 2, 3, 4, and 5 for RDL Technologies 8051 Trainer environments.
