SDCC 8051 Development System

SDCC is a freeware , optimizing, C compiler that is created by Sandeep Dutta under the GNU General Public License.

SDCC 8051 Development System - MicroIDE SDCC 8051 Development System

The package includes an ANSI 8051 C Compiler, 8051 Assembler, Linker and example projects, some of which has been added by BiPOM Electronics. The linker that comes with SDCC has been modified by BiPOM Electronics to run SDCC seamlessly in our Micro-IDE environment.

SDCC has applies standard optimizations such as global sub-expression elimination, loop optimizations, constant folding & propagation, copy propagation, dead code elimination and jump tables for 'switch' statements.

The following data types are supported:

short (8 bits, 1 byte)
char (8 bits, 1 byte)
int (16 bits, 2 bytes )
long (32 bit, 4 bytes)
float (4 byte IEEE)

Inline 8051 assembler code can be inserted in C programs. We have packaged the Windows version of the compiler such that:

  • It has a simplified installation
  • It integrates seamless into Micro-IDE, a Windows-based Integrated Development Environment
  • The linker is modified to build under Windows and execute under Micro-IDE
  • Some example Micro-IDE projects have been added to demonstrate serial port, LCD display and I/O access using SDCC and Micro-IDE

The latest version in its original form can be downloaded from

Use these files at your own risk. BiPOM Electronics disclaims all warranties, express or implied warranties of merchantability and fitness for a particular purpose. In no event shall BiPOM Electronics be liable for any indirect, special, incidental or consequential damages in connection with or arising from the use of the programs and files that are contained in this website.

Usage policy on SDCC ( from its original source ) is as follows:

"This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. In other words, you are welcome to use, share and improve this program. You are forbidden to forbid anyone else to use, share and improve what you give them. Help stamp out software-hoarding!"