The 8051
	These notes will not tell you absolutely everything about the 8051 microcontroller. However, we hope they will provide you with a good introduction to this very popular controller. They should help you to start writing simple assembly language programs that you can test on the EdSim51 Simulator.
	8051 textbook written by EdSim51's developer, James Rogers, will soon be available from Amazon. Read a sample chapter now. The book is based on the following set of online notes, by the same author. However, it greatly expands upon them, with more examples, including C examples not available here. With screenshots of the EdSim51 simulator in action, explanations are easier to follow. The book is due for publication towards the end of April, 2009.
	If you discover mistakes in these notes, or you have general comments about the notes, please send us your comments.
	Introduction
	The HEX Sequence
	The CPU
	A Basic Instruction Set
	The 8051 - complete instruction set
	Hardware Memory Organisation Special Function Registers - SFRs on single sheet Instruction Set Summary Conditional Jumps and Time Delays Subroutines and the Stack 16-bit Addition and Division The Program Status Word Rotate Instructions Parallel Input/Output Timers Serial Port Interrupts
	Peripheral Interfacing
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