Keil C251 Development Tools

Keil development tools for the 251 Microcontroller Architecture support every level of developer from the professional applications engineer to the student just learning about embedded software development.

The industry-standard Keil C Compilers, Macro Assemblers, Debuggers, and Single-board Computers support all 251 derivatives and help you get your projects completed on schedule.
The Keil 251 Development Tools are designed to solve the complex problems facing embedded software developers.


When starting a new project, simply select the microcontroller you use from the Device Database and the µVision IDE sets all compiler, assembler, linker, and memory options for you.

Numerous example programs are included to help you get started with the most popular embedded 251 devices.

The Keil µVision Debugger accurately simulates on-chip peripherals (I²C, CAN, UART, SPI, Interrupts, I/O Ports, A/D Converter, D/A Converter, and PWM Modules) of your 251 device. Simulation helps you understand hardware configurations and avoids time wasted on setup problems. Additionally, with simulation, you can write and test applications before target hardware is available.

When you are ready to begin testing your software application with target hardware, use the MON251 Target Monitor to download and test program code on your target system.

Minimum Hardware Requirements

• 1 GHz 32-bit or 64-bit processor
• 1 GB of system memory (RAM)
512 MB of available disk space
Recommended Hardware Requirements

• 1.5+ GHz 64-bit processor
• 2 GB of system memory (RAM)
• 1 GB of available disk space
• 2 Mpbs or higher Internet connection for software activation, product updates and online services like the PackInstaller
Supported Operating Systems

32-bit and 64-bit variants of Microsoft Windows are supported:


• Windows 10 Home
• Windows 10 Pro
• Windows 10 Enterprise
• Windows 10 Education

• Windows 8.1
• Windows 8.1 Pro
• Windows 8.1 Enterprise
• Windows 8
• Windows 8 Pro
• Windows 8 Enterprise

• Windows 7 Home Basic
• Windows 7 Home Premium
• Windows 7 Professional
• Windows 7 Enterprise
• Windows 7 Ultimate

• Windows Vista Home Premium
• Windows Vista Business
• Windows Vista Enterprise
• Windows Vista Ultimate

Software will be tested against the latest revision (Service Pack) supplied by Microsoft (e.g. Windows 7 SP1).
Beta Releases or Release Candidate versions of Windows are not recommended for productive use.

Tecnologix offers support which is directly handled by development team. Do not hesitate to get in touch with our experts.
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Technical Support

Tecnologix offers support which is directly handled by development team. Do not hesitate to get in touch with our experts.

Just ask here