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8051 Tutorial

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Introduction

• Introduction

Chapter 1 - Types of Memory

• Code Memory
• Internal RAM
• External RAM
• Special Function Registers (SFRs)
• Bit Memory

Chapter 2 - Special Function Registers

• What are SFRs?
• Types of SFRs
• Standard SFR Descriptions
• Non-Standard SFRs

Chapter 3 - Basic Registers

• The Accumulator
• "R" Registers
• B Register
• Data Pointer (DPTR)
• Program Counter (PC)
• Stack Pointer (SP)

Chapter 4 - Addressing Modes

• Immediate Addressing
• Direct Addressing
• Indirect Addressing
• External Direct Addressing
• External Indirect Addressing

Chapter 5 - Program Flow

• Conditional Branching
• Direct Jumps
• Direct Calls
• Return from Subroutines
• Interrupts

Chapter 6 - Low-Level Information

• Instruction Set, Timing, and Low-Level Info

Chapter 7 - Timers

• How Timers Count
• Measuring Time
• How Long do Timers Take to Count?
• Timer SFRs
  • TMOD SFR
    • Mode 0 - 13-bit Timer
    • Mode 1 - 16-bit Timer
    • Mode 2 - Auto-reload Timer
    • Mode 3 - Split Timer
  • TCON SFR
• Initializing a Timer
• Reading a Timer
  • Reading a Timer Value
  • Detecting a Timer Overflow
• Timing the Length of an Event
• Timers as Event Counters

Chapter 8 - Serial Port Operation

• Setting the Serial Port Mode
• Setting the Baud Rate
• Writing to the Serial Port
• Reading from the Serial Port

Chapter 9 - Interrupts

• Events that trigger Interrupts
• Setting Up Interrupts
• Polling Sequence
• Interrupt Priorities
• What Happens When an Interrupt Occurs?
• What Happens When an Interrupt Ends?
• Serial Interrupts
• Register Protection
• Common Bugs in Interrupts

Additional Features in 8052

• Introduction to 8052
• 256 bytes of additional Internal RAM
• New SFRs for 8052's Third Timer
• T2CON SFR
• Timer 2 as a Baud-Rate Generator
• Timer 2 in Auto-Reload Mode
• Timer 2 in Capture Mode
• Timer 2 Interrupt

Reference

• 8052 Instruction Set