chap1 - Chapter 1 The 8051 Microcontroller 1 Objective This...

This preview shows page 1 - 8 out of 19 pages.

1 Chapter 1 The 8051 Microcontroller
2 Objective This chapter is divided into two parts, the first part is: Compare the contrasts in microprocessors and microcontrollers. Explain the concept of embedded system. Explain the variations of speed, packaging, memory and cost per unit and how these affect choosing a microcontroller. Compare and contrast the various members of the 8051 family and compare 8051 microcontrollers offered by various manufacturers.
3 Sections 1.1 Microcontrollers and embedded processors 1.2 Overview of the 8051 family
4 Section 1.1 Microcontrollers and Embedded Processors
5 General-purpose microprocessor CPU General- Purpose Micro- processor RAM ROM I/O Port Timer Serial COM Port Data Bus Address Bus Figure 1-1 (a) General-Purpose Microprocessor System CPU for Computers No RAM, ROM, I/O on CPU chip itself Example : Intel’s x86, Motorola’s 680x0 Many chips on mother’s board
6 Microcontroller RAM ROM I/O Port Timer Serial COM Port Figure 1-1 (b) Microcontroller CPU A smaller computer On-chip RAM, ROM, I/O ports... Example : Motorola’s 6811, Intel’s 8051, Zilog’s Z8 and PIC 16X A single chip
7 Microprocessor v.s. Microcontroller Microprocessor CPU is stand-alone, RAM, ROM, I/O, timer are separate Designer can decide on the amount of ROM, RAM and I/O ports.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture