1 chapter 1 fundamental of microcontroller

The Addressing Methods Use to know the source address and destination address of data... Solving the problem by examples: Design the address decoding circuit using ROM and RAM.. The capa

CHAPTER 1

FUNDAMENTAL OF

MICROCONTROLLERS

Class Rules

1 Class attendance: 10% (if a student absent more than 2

time, the attendance score is zero)

2 Quizes or Excercises in class: 10%

3 Homeworks report: 15% (students will submit the homework via ELearning system)

4 Teamwork project : 25%

• Each team includes 3-4 students, each team will present

their research topic at the 3 final weeks of the semester

• English power point and english presentation in class are encouraged

5 Final exam: 40% (Students will allow to use their documents while doing the exam Time for final exam: 90 minutes)

- Analog input/output interface makes a part of microcontroller circuit of mixed mode(both analog and digital nature).

Introduction

Architecture of microcontroller

Microcontroller PIC, ATMega, TI:

RISC: Reduced Instruction Set Computer

Other Microcontroller:

Some typical specifications of Pic families:

- Flash memory, I/O, Timer-Counter 8bits - 16bits;

- Communication: A/D, Rs232, SPI, I2C, CAN, LAN, USB,…

- Control: ExINT, Output Compare, Input Capture, PWM,

QEI,…

Typical structure of microcontroller

PIC 16F877

PIC 16F877

What is Microprocessor ?  Example?

What is the differences between Microcontroller and Microprocessor?

The Addressing Methods

Use to know the source address and destination address of data

How to solve the addressing mode problem?

Review some popular IC using in addressing mode:

- 74139: decoding 2  4

- 74139: decoding 3  8

- Some logical gates: AND, OR, XOR, EX-OR, EX-NOR

Introduction

ROM and RAM

Typical using in the addressing problem

ROM

A0 - An nCS D0 - Dm

The ability to addressing data is based on the number of

Solving the problem by examples:

Design the address decoding circuit using ROM and RAM The capacity of ROM is 16KB using pieces of 4KB ROM and the capacity of RAM is 8KB using pieces of 4KB RAM The starting address of ROMs is 0000h and the address of RAMs is following after the ending address of ROMs

How to solve this kind of problem?

Step 1: Make the addressing table of all peripherals

Step 2: Choose suitable address line to be the input signal to

decoding ICs as 74138 or 74139 or 74142, and decide which output pins of the decoding ICs to connect to the appropriate peripherals

Step 3: Draw the circuit.

Exercises

1 Design the address decoding circuit using ROM and RAM The capacity of ROM is 16KB using pieces of 8KB ROM and the capacity of RAM includes 2 pieces of 4KB RAM and 2 pieces of 2 KB RAM The starting address of ROMs

is 0000h and the address of RAMs is following after the ending address of ROMs

2 Design the address decoding circuit using ROMs and RAMs The capacity of ROM is 32KB using pieces of 8KB ROM and the capacity of RAM is 4KB using pieces of 2KB RAM The starting address of RAMs is 0000h and the address of ROMs is following after the ending address of RAMs

Think about the three types of problems

1 The starting addresses of each types of memory are given

2 The capacity of the second type is bigger than the first type

3 The capacity of the second type is smaller than the first type

Programing Language and Programing Softwares

-Programing Language: C, Basic, ASM,

Some popular loading circuits

1 FD-ICP

Loading program: WinPicPro

2 PIG-PG1

Loading program: WinPicPro

2 PIG-PG2

Loading program: WinPicPro

Introduction Introduction

2 PIG-PG3

Loading program: ICPro