PIC microcontrollers
PIC microcontrollers come in a wide range of
packages from small chips with only 8 pins and 512
words of memory all the way up to very powerful
devices that have 32 Kilo words of memory and 84
pins to connect to electronic circuits
.
8 and 16 bit EEPROM/EPROM/ROM CMOS
Microcontroller
Applications in personal care, security systems,
remote transmitter/receivers
Programmable input/output terminations
This block diagram shows a PIC
microcontroller application in a vacuum
cleaner
http://www.microchip.com
Microchip’s Infrared products enable the
embedded system designer to easily add
infrared wireless connectivity
http://www.microchip.com
Internal view of a microcontroller
PIC development boards are used to program and
run simple programs
Serial PC interface to
program IC
Some small PICs though powerful have only 35
instructions that control its operation
.
PROGRAM DEVELOPMENT TOOLS
Icon Assembler (CoreChart) Simple Flowchart
Pin Description for PIC12C508A
GP0
Bi
-
directional I/O port/ serial programming data mode.
GP1
Bi
-
directional I/O port/ serial programming clock.
GP2/T0CKI
I/O Bi
-
directional I/O port. Can be configured as T0CKI.
GP3/MCLR/VPP
Input port/master clear (reset) input/programming voltage
input.
GP4/OSC2
I/O Bi
-
directional I/O port/oscillator crystal output.
GP5/OSC1/CLKIN
Bidirectional IO port/oscillator crystal input/external clock
source input
VDD
—
Positive supply for logic and I/O pins
VSS
—
Ground reference for logic and I/O pins
THE PICAXE MICRO CONTROLLER
The PICAXE is a low
-
cost ‘FLASH’ memory
based microcontroller.
These microcontrollers can be programmed
over and over again (typically 100 000 times).
The PICAXE uses a simple BASIC language (or graphical flowcharts).
It is much easier to learn and debug than industrial
programming languages.
PICAXE programming is at the ‘chip’ level.
The microcontroller is programmed via a 3
-
wire
connection to the computers serial port.
THE PICAXE MICRO CONTROLLER
Has an internal A to D converter enabling analogue
inputs with digital outputs.
THE PICAXE MICRO CONTROLLER
Enter the password to open this PDF file:
File name:
-
File size:
-
Title:
-
Author:
-
Subject:
-
Keywords:
-
Creation Date:
-
Modification Date:
-
Creator:
-
PDF Producer:
-
PDF Version:
-
Page Count:
-
Preparing document for printing…
0%
Comments 0
Log in to post a comment