01-08-2012, 09:57 AM
Introducing Embedded Systems and the Microcontrollers
1 Introducing Embedded Systems and the Microcontrollers.ppt (Size: 2.04 MB / Downloads: 22)
Introduction
Definition of Embedded Systems
Examples
Computer Essentials
Microprocessors and Microcontrollers
PIC Microcontrollers
12 Series PIC
Definition of Embedded Systems
Embedded system: is a system whose principal function is not computational, but which is controlled by a computer embedded within it.
Outline
Definition of Embedded Systems
Examples
Computer Essentials
Microprocessors and Microcontrollers
PIC Microcontrollers
12 Series PIC
Computer Essentials
Instruction Sets
CISC: Complex Instruction Set Computer
RISC: Reduced Instruction Set Computer
Memory Types
Volatile: Random Access Memory (RAM)
Non-volatile: Read Only Memory (ROM)
Microprocessors and Microcontrollers
The microprocessor is a processor on one silicon chip.
The microcontrollers are used in embedded computing.
The microcontroller is a microprocessor with added circuitry.
Outline
Definition of Embedded Systems
Examples
Computer Essentials
Microprocessors and Microcontrollers
PIC Microcontrollers
12 Series PIC
PIC Microcontrollers
Peripheral Interface Controller (PIC) was originally designed by General Instruments
In the late 1970s, GI introduced PIC® 1650 and 1655 – RISC with 30 instructions.
PIC was sold to Microchip
Features: low-cost, self-contained, 8-bit, Harvard structure, pipelined, RISC, single accumulator, with fixed reset and interrupt vectors.
Summary
An embedded system is a product that has one or more computers embedded within it, which exercise primarily a control function.
The embedded computer is usually a microcontroller: a microprocessor adapted for embedded control applications.
Microcontrollers are designed according to accepted electronic and computer principles, and are fundamentally made up of microprocessor core, memory and peripherals.
Microchip offers a wide range of microcontrollers, divided into a number of different families. Each family has identical central architecture and instruction set. However, common features also appear across all their microcontrollers.
The Microchip 12F508 is a good microcontroller to introduce a range of features of microcontrollers in general and of PIC microcontrollers in particular.