Pauls 8052 Homepage Welcome On This page is infomation about:   My 8051 Minimal System: (For Starting out) Uses an Eprom & nvram to download & run programs, Startup program can be in the Eprom or ram, Switchable.I/O is 8 LEDs on P1 and Serial Port. As you can See I have only built this circuit on a breadboard so far. Phillips P89C51RD2: This chip has 64KB of Flash Memory and 768 bytes ram.Mine is a surface mount chip on a board with sockets for the io pins and crystal. (C) Copyright 1997 - 2008 by Vault Information Services LLC. All Rights Reserved. Information provided "as-is" without warranty. Please see details. Contact us for usage and copy permission.